It is a simple code for asp.net that you can use for your login page

Imports System.Data.OleDb

Partial Class _Default
    Inherits System.Web.UI.Page
    Dim cn As New OleDbConnection
    Dim cmd As New OleDbCommand
    Dim dr As OleDbDataReader

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Try
            With cn
                If .State = Data.ConnectionState.Open Then .Close()
                .ConnectionString = "Provider=microsoft.jet.oledb.4.0;data source=" & Server.MapPath("data\asp.mdb")

                .Open()
                'MsgBox("connected")
            End With
        Catch ex As Exception
            MsgBox(ex.Message.ToString)
        End Try
    End Sub

Protected Sub btnLogin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLogin.Click

        If txtUsername.Text = "" Or txtPassword.Text = "" Then Exit Sub

        With cmd
            .CommandText = "Select * from tbluser Where username = '" & Trim(txtUsername.Text) & "' and password = '" & Trim(txtPassword.Text) & "' "
            .Connection = cn
            dr = .ExecuteReader
        End With


        If dr.HasRows Then
            'MsgBox("Welcome", MsgBoxStyle.Information, "Welcome")
            Session("name") = txtUsername.Text
            Response.Redirect("default2.aspx")
        Else
            'MsgBox("Access Denied", MsgBoxStyle.Exclamation, "Error")
            Label1.Text = ("Pangit ka! " & txtUsername.Text)
        End If
    End Sub

    Protected Sub btnCancel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCancel.Click

        txtPassword.Text = Nothing
        txtUsername.Text = Nothing

    End Sub
End Class

mysql connection strings in vb.net

imports
Option Explicit On
Imports MySql.Data.MySqlClient
Imports System.Data


connnection string
Public con As String = "Server=localhost;Database=dbstud;user id=root;password="

Check all textboxes in form if they if they are empty(vb.net)

Public Field_Check As New TextHandling

Public Class TextHandling
    Function Empty_Checks(ByRef frm As Form) As Boolean
        Dim Form_Object As Control
        iTerminate = False
        For Each Form_Object In frm.Controls
            If TypeOf Form_Object Is TextBox Or TypeOf Form_Object Is ComboBox Then
                If Form_Object.Text = "" Then
                    MsgBox(Form_Object.Name & " is empty. Please complete the field.", vbExclamation)
                    iTerminate = True
                    Form_Object.Focus()
                    Exit Function
                End If
            End If
        Next Form_Object
    End Function

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Field_Check.Empty_Checks(Me)
        If iTerminate = True Then
            iTerminate = False

            Exit Sub
        End If
    End Sub

Check all textboxes in form if they contain numbers only(vb.net)

Public Function Chk_If_Numeric(ByRef frm As Form) As Boolean
'the function check from the textboxes in a certain form'
Dim cControl As Control

Chk_If_Numeric = True  'set the variable to default value'
    For Each cControl In frm 'looping trough the form controls'
        If TypeOf cControl Is TextBox Then 'finding only textboxes'
            If Not IsNumeric(cControl.Text) Then 'check if contain only numbers'
                Chk_If_Numeric = False 'if one of them is not we return false'
            End If
        End If
    Next
End Function

Private Sub Command1_Click()
'a test button click '
    If Chk_If_Numeric(Form1) Then
        MsgBox "all numbers"
    Else
        MsgBox "not all are numeric"
    End If
End Sub

Generate Crystal Report from List View in vb.net

 Private Sub cmdReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdReport.Click
        'REPORT OBJECT
        Dim MyRpt As New CrystalReport1
        'DATASET, AND DATAROW OBJECTS NEEDED TO MAKE THE DATA SOURCE
        Dim row As DataRow = Nothing
        Dim DS As New DataSet

        'ADD A TABLE TO THE DATASET
        DS.Tables.Add("ListViewData")
        'ADD THE COLUMNS TO THE TABLE
        With DS.Tables(0).Columns
            .Add("Field1", Type.GetType("System.String"))
            .Add("Field2", Type.GetType("System.String"))
            .Add("Field3", Type.GetType("System.String"))
        End With

        'LOOP THE LISTVIEW AND ADD A ROW TO THE TABLE FOR EACH LISTVIEWITEM
        For Each LVI As ListViewItem In ListView1.Items
            row = DS.Tables(0).NewRow
            row(0) = LVI.SubItems(0).Text
            row(1) = LVI.SubItems(1).Text
            row(2) = LVI.SubItems(2).Text
            DS.Tables(0).Rows.Add(row)
        Next

        'SET THE REPORT SOURCE TO THE DATABASE
        MyRpt.SetDataSource(DS)

        'ASSIGN THE REPORT TO THE CRVIEWER CONTROL
        CRViewer.ReportSource = MyRpt

        'DISPOSE OF THE DATASET
        DS.Dispose()
        DS = Nothing
    End Sub

sample prog in vb.net using ms sql

Module1.vb codes
Option Explicit On
Imports System.Data.OleDb
Imports System.Data
Module Module1
    Public con As String = "Provider=SQLOLEDB;Data Source=315mis\wdc1;Initial Catalog=sample;User Id=sa;Password=P@ssw0rd;"
    Public cnSQL As New OleDbConnection
    Public cmSQL As New OleDbCommand
    Public strSQL As String
    Public objRead As OleDbDataReader
    Public currenttab As Integer
    Public ds As New DataSet
    Public lv As ListViewItem

   
    Public Sub connection_open()
        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
    End Sub

    Public Sub connection_close()
        cnSQL.Close()
        cnSQL.Dispose()
    End Sub
    Public Sub SaveEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "insert into tbl_stud(id,name,course) values('" & id & "','" & name & "','" & course & "')"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub
    Public Sub updateEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "UPDATE tbl_stud SET name='" & name & "',course='" & course & "'where id='" & id & "'"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub
    Public Sub deleteEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "delete from tbl_stud where id='" & id & "'"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub
    Public Function Getid(ByVal tablename As String, ByVal fieldname As String, Optional ByVal cond As String = "") As Double
        Dim cmd2 As New OleDbCommand

        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
        Try

            cmd2.Connection = cnSQL
            cmd2.CommandText = "select top 1 " & fieldname & " from " & tablename & IIf(cond <> "", " where " & cond, "") & " order by 1 desc"
            objRead = cmd2.ExecuteReader
            If objRead.Read = True Then
                Getid = objRead(0) + 1
            Else
                Getid = 1
            End If
            objRead.Close()
        Catch ex As Exception
            MsgBox(Err.Description)
        End Try
        cnSQL.Close()
    End Function
    Function AutoID(ByVal Tablename As String, ByVal Fieldname As String) As Int32
        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
        Dim cmd1 As New OleDbCommand
        Dim dr1 As OleDbDataReader
        cmd1.Connection = cnSQL
        cmd1.CommandType = CommandType.Text
        cmd1.CommandText = "select top 1 " & Fieldname & " from " & Tablename & " Order by 1 Desc "
        dr1 = cmd1.ExecuteReader
        If dr1.Read = True Then
            AutoID = Microsoft.VisualBasic.Right(dr1(0), 4) + 1
        Else
            AutoID = 1
        End If
        dr1.Close()
        cnSQL.Close()
    End Function
End Module


Form1.vb codes


Option Explicit On
Imports System.Data.OleDb
Imports System.Data

Public Class Form1
    Dim myDA As New OleDbDataAdapter
    Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click
        If btnsave.Text = "New" Then
            btnsave.Text = "Save"
            tab1()
            GroupBox1.Enabled = True
            txtname.Focus()
            Stud_autonum()
        ElseIf btnsave.Text = "Save" And txtname.Text <> "" And txtcourse.Text <> "" Then
            ' txtname.Text = txtname.Text & "-" & txtid.Text
            SaveEntry(txtid.Text, txtname.Text, txtcourse.Text)
            MsgBox("Student has been Successfully Added.", MsgBoxStyle.Information)
            btnsave.Text = "New"
            PopulateListView()
            clear()
            tab2()
            GroupBox1.Enabled = False
        ElseIf txtname.Text = "" Then
            MsgBox("Pleas Input Student Name.", MsgBoxStyle.Critical)
            txtname.Focus()
        ElseIf txtcourse.Text = "" Then
            MsgBox("Pleas Input Course.", MsgBoxStyle.Critical)
            txtcourse.Focus()
        End If

    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        GroupBox1.Enabled = False
        currenttab = 0
        PopulateListView()
        ListView1.Items(0).Selected = True
        ListView1.Select()
        txtid.Enabled = False
        btnupdate.Enabled = False
        btndelete.Enabled = False
    End Sub
    Private Sub tab1()
        currenttab = TabControl1.SelectedIndex
        currenttab = currenttab + 1
        If (currenttab < TabControl1.TabCount) Then

            TabControl1.SelectedIndex = currenttab

        End If
    End Sub
    Private Sub tab2()
        currenttab = TabControl1.SelectedIndex
        currenttab = currenttab - 1
        If (currenttab > -1) Then

            TabControl1.SelectedIndex = currenttab

        End If
    End Sub
    Private Sub PopulateListView()
        ListView1.Items.Clear()
        connection_open()
        Try
            strSQL = "SELECT * FROM tbl_stud ORDER BY id Asc"
            cmSQL = New OleDbCommand(strSQL, cnSQL)
            objRead = cmSQL.ExecuteReader
            While objRead.Read
                lv = Me.ListView1.Items.Add(objRead("id") & "")
                lv.SubItems.Add(objRead("name") & "")
                lv.SubItems.Add(objRead("course") & "")
            End While
            objRead.Close()
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        Finally
            '---------inserted code to count the number of columns
            ds = New DataSet
            myDA = New OleDbDataAdapter(strSQL, cnSQL)
            myDA.Fill(ds, "MyData")
            Dim kRow1 As Integer = ds.Tables("MyData").Rows.Count 'TOTAL ROW
            lblTotal.Text = "Total No. of Students : " + kRow1.ToString
            '------------------------end
            ListView1.Items.Clear()
            Dim i As Integer 'COLUMNS
            Dim iCol As Integer = ds.Tables("MyData").Columns.Count 'TOTAL COLUMN
            Dim k As Integer 'ROWS
            Dim kRow As Integer = ds.Tables("MyData").Rows.Count 'TOTAL ROW
            Dim ThisRow(4) As String '//=For each Loop of ROW

            For k = 0 To kRow - 1
                For i = 0 To iCol - 1
                    ThisRow(i) = ds.Tables("MyData").Rows(k).Item(i).ToString
                Next
                Dim lsvi As New ListViewItem(ThisRow, 2)

                '//=Start Alternate Color
                If k / 2 <> Int(k / 2) Then '//=Determine Alternate Row(odd or not)
                    lsvi.BackColor = Color.SkyBlue
                Else
                    lsvi.BackColor = Color.LightCyan


                End If
                '//=End Alternate Color
                ListView1.Items.Add(lsvi)
            Next
            connection_close()
        End Try
    End Sub
    Private Sub RefreshForm()
        ListView1.Items.Clear()
        Call searchListView()
    End Sub
    Private Sub searchListView()
        connection_open()
        Try
            strSQL = "SELECT * FROM tbl_stud where id like '" & txtsearch.Text & "%'"
            cmSQL = New OleDbCommand(strSQL, cnSQL)
            objRead = cmSQL.ExecuteReader
            While objRead.Read
                lv = Me.ListView1.Items.Add(objRead("id") & "")
                lv.SubItems.Add(objRead("name") & "")
                lv.SubItems.Add(objRead("course") & "")
            End While
            objRead.Close()
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        Finally
            connection_close()
        End Try
    End Sub
    Private Sub ListView1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ListView1.KeyPress
        If e.KeyChar = Chr(13) Then
            GroupBox1.Enabled = True
            btnupdate.Enabled = True
            btndelete.Enabled = True
            btnsave.Enabled = False
            tab1()
            With ListView1.SelectedItems(0)
                txtid.Text = .SubItems(0).Text
                txtname.Text = .SubItems(1).Text
                txtcourse.Text = .SubItems(2).Text
            End With
        End If
    End Sub
    Private Sub ListView1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseClick
        GroupBox1.Enabled = True
        btnsave.Enabled = False
        tab1()
        ListView1_MouseDoubleClick(sender, e)
    End Sub

    Private Sub ListView1_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseDoubleClick
        GroupBox1.Enabled = True
        btnupdate.Enabled = True
        btndelete.Enabled = True
        btnsave.Enabled = False
        tab1()
        With ListView1.SelectedItems(0)
            txtid.Text = .SubItems(0).Text
            txtname.Text = .SubItems(1).Text
            txtcourse.Text = .SubItems(2).Text
        End With
    End Sub

    Private Sub txtsearch_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtsearch.KeyPress
        If e.KeyChar = Chr(13) Then
            ListView1.Items(0).Selected = True
            ListView1.Select()
        End If
    End Sub

    Private Sub txtsearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtsearch.TextChanged
        RefreshForm()
    End Sub

    Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
        updateEntry(txtid.Text, txtname.Text, txtcourse.Text)
        MsgBox("Student has been Successfully Udated.", MsgBoxStyle.Information)
        PopulateListView()
        clear()
        tab2()
        GroupBox1.Enabled = False
        btnupdate.Enabled = False
        btndelete.Enabled = False
        btnsave.Enabled = True
    End Sub
    Private Sub clear()
        txtid.Text = ""
        txtname.Text = ""
        txtcourse.Text = ""
    End Sub

    Private Sub btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndelete.Click
        deleteEntry(txtid.Text, txtname.Text, txtcourse.Text)
        MsgBox("Student has been Successfully Deleted.", MsgBoxStyle.Information)
        PopulateListView()
        clear()
        tab2()
        GroupBox1.Enabled = False
        btnupdate.Enabled = False
        btndelete.Enabled = False
        btnsave.Enabled = True
    End Sub
    Private Sub Stud_autonum()
        Dim year As String
        Dim studid As String
        year = Now.ToString("yyyy")
        studid = "" & Format(AutoID("tbl_stud", "id"), "0000")
        txtid.Text = year & studid
    End Sub

    Private Sub txtname_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtname.KeyPress
        If e.KeyChar = Chr(13) Then
            txtcourse.Focus()
        End If
    End Sub

    Private Sub btncancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btncancel.Click
        clear()
        tab2()
        GroupBox1.Enabled = False
        btnsave.Enabled = True
        btnupdate.Enabled = False
        btndelete.Enabled = False
        btnsave.Text = "New"
        txtsearch.Text = ""
    End Sub
   
End Class

Save,Update and Delete records using functions

Declare to a class 

 

Public Sub SaveEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "insert into tbl_stud(id,name,course) values('" & id & "','" & name & "','" & course & "')"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub

    Public Sub updateEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "UPDATE tbl_stud SET name='" & name & "',course='" & course & "'where id='" & id & "'"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub

    Public Sub deleteEntry(ByVal id As String, ByVal name As String, ByVal course As String)
        Try

            connection_open()
            strSQL = "delete from tbl_stud where id='" & id & "'"

            cmSQL = New OleDbCommand(strSQL, cnSQL)
            cmSQL.ExecuteNonQuery()
            cmSQL.Dispose()

            connection_close()

        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")

        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        End Try

    End Sub

Declare to the form

 Private Sub btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndelete.Click
        deleteEntry(txtid.Text, txtname.Text, txtcourse.Text)
        MsgBox("Student has been Successfully Deleted.", MsgBoxStyle.Information)
      End Sub

 Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
        updateEntry(txtid.Text, txtname.Text, txtcourse.Text)
        MsgBox("Student has been Successfully Udated.", MsgBoxStyle.Information)
      
    End Sub

Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click
   
            SaveEntry(txtid.Text, txtname.Text, txtcourse.Text)
            MsgBox("Student has been Successfully Added.", MsgBoxStyle.Information)
    

    End Sub

public declaration of connetion open and close to the database vb.net

Public con As String = "Provider=SQLOLEDB;Data Source=315mis\wdc1;Initial Catalog=sample;User Id=sa;Password=P@ssw0rd;"
    Public cnSQL As New OleDbConnection
    Public cmSQL As New OleDbCommand
    Public strSQL As String
    Public objRead As OleDbDataReader
    Public currenttab As Integer
    Public ds As New DataSet
    Public lv As ListViewItem

   
    Public Sub connection_open()
        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
    End Sub

    Public Sub connection_close()
        cnSQL.Close()
        cnSQL.Dispose()
    End Sub

MS sql/Vb.net(2005) connection string

Public con As String = "Provider=SQLOLEDB;Data Source=315mis\wdc1;Initial Catalog=sample;User Id=sa;Password=P@ssw0rd;"

Crystal report using sql query search with textbox

 the Project solution --> Add --> New Item --> .rpt File
*It will open the following window. Select the Report wizard

 Specifying the data --> Create new connection --> OLEDB(ADO) --> specify the data provider by following screen
*Now, after creating the .rpt file we need to write the code to fill the data source. pastse this code to the command button


Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
        Try
            connection_open()
            strSQL = "select * from tbl_stud where id = '" & TextBox4.Text & "'"
            ds = New DataSet
            myDA = New OleDbDataAdapter(strSQL, cnSQL)
            myDA.Fill(ds, "MyData")




            'Get the Report Location

            Dim strReportPath As String = "C:\Documents and Settings\joeYap\Desktop\exam\WindowsApplication1\WindowsApplication1\CrystalReport1.rpt"

            'Check file exists

            If Not IO.File.Exists(strReportPath) Then

                Throw (New Exception("Unable to locate report file:" & vbCrLf & strReportPath))

            End If



            'Assign the datasource and set the properties for Report viewer

            Dim rptDocument As New CrystalDecisions.CrystalReports.Engine.ReportDocument



            rptDocument.Load(strReportPath)

            rptDocument.SetDataSource(ds.Tables("MyData"))


            CrystalReportForm.CrystalReportViewer1.ShowRefreshButton = False

            CrystalReportForm.CrystalReportViewer1.ShowCloseButton = False

            CrystalReportForm.CrystalReportViewer1.ShowGroupTreeButton = False

            CrystalReportForm.CrystalReportViewer1.ReportSource = rptDocument
            CrystalReportForm.Show()
        Catch Exp As OleDbException
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "SQL Error")
        Catch Exp As Exception
            MsgBox(Exp.Message, MsgBoxStyle.Critical, "General Error")
        Finally
            connection_close()
        End Try

    End Sub

my sql using vb.net 2008

Imports System.ServiceProcess
Imports System
Imports Microsoft.Data.Odbc

Here is the VB code that will insert a record into a MySQL database table:

Dim MyConString As String = "DRIVER={MySQL ODBC 3.51 Driver};" & _
"SERVER=hostname;" & _
"DATABASE=databasename;" & _
"UID=user;" & _
"PASSWORD=password;" & _
"OPTION=3;"
Dim MyConnection As New OdbcConnection(MyConString)
MyConnection.Open()
Dim MyCommand As New OdbcCommand
MyCommand.Connection = MyConnection
MyCommand.CommandText = "INSERT INTO tablename VALUES(NULL,"val1","val2","val3)"
MyCommand.ExecuteNonQuery()
MyConnection.Close() 

Public Sub retriveData()
        Try
            Dim query As String = "SELECT * FROM Country"
            Dim connection As New MySqlConnection(connStr)
            Dim cmd As New MySqlCommand(query, connection)
 
            connection.Open()
 
            Dim reader As MySqlDataReader
            reader = cmd.ExecuteReader()
 
            While reader.Read()
                Console.WriteLine((reader.GetString(0) & ", " & _
                    reader.GetString(1)))
            End While
 
            reader.Close()
            connection.Close()
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
End Sub


Function updateRecord(ByVal query As String) As Integer
        Try
            Dim rowsEffected As Integer = 0
            Dim connection As New MySqlConnection(connStr)
            Dim cmd As New MySqlCommand(query, connection)
 
            connection.Open()
 
            rowsEffected = cmd.ExecuteNonQuery()
 
            connection.Close()
 
            Return rowsEffected
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
End Function


 Dim conn As MySqlConnection
        Dim cnString As String
        cnString = My.Settings.constr
        sqlStatement = "INSERT INTO phpvms_fsspireps(pilotid, code, flightnum, depicao, arricao, route, route_details, distance, aircraft, flighttime, flighttime_stamp, landingrate, submitdate, accepted, log, load, fuelused, expenselist, source, exported,) VALUES(13, 'GRW', '1000', 'LGAV', 'LGTS', 'NEVRA UZ507 OSMOS', 'a:0:{}', '120', '4', '00.58', '00:58:00', -1015.85, '2010-05-01 14:15:56', 0, 'Greece Airways Va ACARS application Log Not yet imported!', 111, 3458, '[BLOB - 1Bytes]', 'GRW ACARS', 1,)"
        conn = New MySqlConnection(cnString)
        Try
            conn.Open()
            conn.BeginTransaction(sqlStatement)
        Catch ex As Common.DbException
            MsgBox(ex.ToString)
        Finally
            conn.Close()
        End Try
    End Sub 

ms sql server manipulation vb.net 2008

http://www.vbdotnetheaven.com/UploadFile/mahesh/CreateSQLDatabase04252005064419AM/CreateSQLDatabase.aspx

Using DataReaders, mySQL Server

The following code inserts a Record into the Jobs table in Pubs sample database. Drag a button onto the form and place the following code.

Imports System.Data.SqlClient Public Class Form2 Inherits System.Windows.Forms.Form Dim myConnection As SqlConnection Dim myCommand As SqlCommand Dim ra as Integer 'integer holds the number of records inserted Private Sub Form2_Load(ByVal sender As System.Object, ByVal e_ As System.EventArgs) Handles MyBase.Load End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_ As System.EventArgs) Handles Button1.Click myConnection = New SqlConnection("server=localhost;uid=sa;pwd=;database=pubs") 'you need to provide password for sql server myConnection.Open() myCommand = New SqlCommand("Insert into Jobs values 12,'IT Manager',100,300,_ myConnection) ra=myCommand.ExecuteNonQuery() MessageBox.Show("New Row Inserted" & ra) myConnection.Close() End Sub End Class

Deleting a Record 
We will use Authors table in Pubs sample database to work with this code. Drag a button onto the form and place the following code.

Imports System.Data.SqlClient Public Class Form3 Inherits System.Windows.Forms.Form Dim myConnection As SqlConnection Dim myCommand As SqlCommand Dim ra as Integer Private Sub Form3_Load(ByVal sender As System.Object, ByVal e_ As System.EventArgs) Handles MyBase.Load End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_ As System.EventArgs) Handles Button1.Click myConnection = New SqlConnection("server=localhost;uid=sa;pwd=;database=pubs") 'you need to provide password for sql server myConnection.Open() myCommand = New SqlCommand("Delete from Authors where city='Oakland'",_ myConnection) 'since no value is returned we use ExecuteNonQuery ra=myCommand.ExecuteNonQuery() MessageBox.Show("Records affected" & ra) myConnection.Close() End Sub End Class

Updating Records
We will update a row in Authors table. Drag a button onto the form and place the following code.
Imports System.Data.SqlClient
Public Class Form4 Inherits System.Windows.Forms.Form
Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer
Private Sub Form4_Load(ByVal sender As System.Object, ByVal e_
As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
As System.EventArgs) Handles Button1.Click
myConnection = New SqlConnection("server=localhost;uid=sa;pwd=;database=pubs")
'you need to provide password for sql server
myConnection.Open()
myCommand = New SqlCommand("Update Authors Set city='Oakland' where city=_
'San Jose' ",myConnection)
ra=myCommand.ExecuteNonQuery()
MessageBox.Show("Records affected" & ra)
myConnection.Close()
End Sub
End Class

insert data mysql vb.net 2008

1. Imports System.Data.Odbc
2.         Dim con As New OdbcConnection("DRIVER={MySQL ODBC 3.51 Driver};SERVER=localhost;DATABASE=mydb;UID=root;PWD=mydb:OPTION=03")
3.         Dim da As New OdbcDataAdapter
4.         da.SelectCommand = New OdbcCommand("insert into emplogin values('MTI019','venkatesh','venkatesa','venkipinki',null)", con)
5.         Dim ds As New DataSet
6.         Dim builder As CommandBehavior = CommandBehavior.SingleRow
7.         con.Open()
8.  
9. 'The Following Line Was Bolded
10.         Dim builder As OdbcCommand builder
11.         'Dim cmd As New OdbcCommand("insert into emplogin values()")
12. da.Fill(ds, "emplogin")
13.         da.Update(ds, "emplogin")

vbline vb.net 2008

Private Sub showsummary()
        txtSummary.Text = "Student ID: " & lblstudID.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "First Name: " & txtfname.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Middle Name: " & txtmname.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Last Name: " & txtlname.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Age: " & txtage.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Religion: " & txtreligion.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Gender: " & cmbgender.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Civil Status: " & cmbstatus.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Citizenship: " & txtcitizenship.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Birth Date: " & dtbday.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Blood Type: " & cmbblodtyp.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Contact No.: " & txtstudcont.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Place of Birth: " & txtPofB.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Home Address: " & cmbblodtyp.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "City Address: " & txtstudcont.Text
        If rdbnew.Checked = True Then
            txtSummary.Text = txtSummary.Text & vbNewLine & "Student Status: " & rdbnew.Text
        ElseIf rdbtrans.Checked = True Then
            txtSummary.Text = txtSummary.Text & vbNewLine & "Student Status: " & rdbtrans.Text
            txtSummary.Text = txtSummary.Text & vbNewLine & "Previous Course: " & txtPcrs.Text
            txtSummary.Text = txtSummary.Text & vbNewLine & "School: " & txtschl.Text
            txtSummary.Text = txtSummary.Text & vbNewLine & "Address: " & txttadd.Text
        End If
        txtSummary.Text = txtSummary.Text & vbNewLine & "Name: " & txtGname.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Contact No.: " & txtGcontact.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Address: " & txtGadd.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Name: " & txtGname.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Contact No.: " & txtGcontact.Text
        txtSummary.Text = txtSummary.Text & vbNewLine & "Address: " & txtGadd.Text


    End Sub

auto number

Imports System.Data
Imports System.Data.OleDb
Module Student

    Public Function Getid(ByVal tablename As String, ByVal fieldname As String, Optional ByVal cond As String = "") As Double
        Dim cmd2 As New OleDbCommand

        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
        Try

            cmd2.Connection = cnSQL
            cmd2.CommandText = "select top 1 " & fieldname & " from " & tablename & IIf(cond <> "", " where " & cond, "") & " order by 1 desc"
            dr = cmd2.ExecuteReader
            If dr.Read = True Then
                Getid = dr(0) + 1
            Else
                Getid = 1
            End If
            dr.Close()
        Catch ex As Exception
            MsgBox(Err.Description)
        End Try
        cnSQL.Close()
    End Function
    Function AutoID(ByVal Tablename As String, ByVal Fieldname As String) As Int32
        cnSQL = New OleDbConnection(con)
        cnSQL.Open()
        Dim cmd1 As New OleDbCommand
        Dim dr1 As OleDbDataReader
        cmd1.Connection = cnSQL
        cmd1.CommandType = CommandType.Text
        cmd1.CommandText = "select top 1 " & Fieldname & " from " & Tablename & " Order by 1 Desc "
        dr1 = cmd1.ExecuteReader
        If dr1.Read = True Then
            AutoID = Microsoft.VisualBasic.Right(dr1(0), 4) + 1
        Else
            AutoID = 1
        End If
        dr1.Close()
        cnSQL.Close()
    End Function


End Module







Private Sub Stud_autonum()
        Dim year As String
        Dim studid As String
        year = Now.ToString("yyyy")
        studid = "" & Format(AutoID("tblStudent", "StudentID"), "000000")
        lblstudID.Text = year & studid
    End Sub

Tab control(vb.net 2008)

currenttab = 0 ' Start with first tab
currenttab = TabControl1.SelectedIndex
        currenttab = currenttab + 1
        If (currenttab < TabControl1.TabCount) Then

            TabControl1.SelectedIndex = currenttab

        End If



currenttab = TabControl1.SelectedIndex
        currenttab = currenttab - 1
        If (currenttab > -1) Then

            TabControl1.SelectedIndex = currenttab

        End If

        If currenttab = 0 Then
            Button1.Enabled = False
        ElseIf currenttab > 0 Then
            Button1.Enabled = True
        End If

pagenation and checkbox array

<style type="text/css">
<!--
.style7 {font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 18px;
}
.style8 {color: #FFFFFF}
.style10 {color: #FFFFFF; font-weight: bold; }
-->
</style>
<table width="560" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td colspan="4">&nbsp;</td>
  </tr>
  <tr>
    <td height="73" colspan="4"><div align="center"><span class="style7">Inbox</span></div></td>
  </tr>
  <tr>
    <td colspan="4"></td>
  </tr>
  <tr>
    <td width="77" bgcolor="#666666"><span class="style8"></span></td>
    <td width="168" bgcolor="#666666"><span class="style10">Name</span></td>
    <td width="183" bgcolor="#666666"><span class="style10">E-mail address</span></td>
    <td width="132" bgcolor="#666666"><span class="style10"> Subject</span></td>
  </tr>
  <tr>
    <td colspan="4"><div style="width:565px; height:auto; top:auto; border:#000000 1px solid">
     <p> <?php
      include("connect.php");
//Obtain the required page number
if (isset($_GET['pageno'])) {
   $pageno = $_GET['pageno'];
} else {
   $pageno = 1;
} // if
//Identify how many database rows are available
$query = "SELECT count(*) FROM tbl_inbox";
$result = mysql_query($query) or trigger_error("SQL", E_USER_ERROR);
$query_data = mysql_fetch_row($result);
$numrows = $query_data[0];
//Calculate number of $lastpage
$rows_per_page = 10;
$lastpage      = ceil($numrows/$rows_per_page);
//Ensure that $pageno is within range
$pageno = (int)$pageno;
if ($pageno > $lastpage) {
   $pageno = $lastpage;
} // if
if ($pageno < 1) {
   $pageno = 1;
} // if
//Construct LIMIT clause
$limit = 'LIMIT ' .($pageno - 1) * $rows_per_page .',' .$rows_per_page;
//Issue the database query
$query = "SELECT * FROM tbl_inbox ORDER BY id DESC $limit";
$result = mysql_query($query) or trigger_error("SQL", E_USER_ERROR);

        $rs = mysql_query($query) or die("Invalid Query <br>$sql");
        $count=mysql_num_rows($rs);
        if($count==0)
        {
        echo'<br/><center><font style="font-family:Tahoma;font-size:11px;color:#990000">&nbsp;&nbsp;No Message in your Inbox</font></center><br/>';
        }
        while($row = mysql_fetch_array($result))
        {
        $rd=$row['rd'];
        echo'<form name="form1" method="post" action="">';
        if($rd=='y')
        {
        echo'<table>';
        echo'<tr>';
        echo'<td width="6">&nbsp;</td>';
        echo'<td width="60" ><input name="checkbox[]" type="checkbox" id="checkbox[]" value="'.$row['id'].'"> </td>';       
        echo'<td width="170"><font face="Tahoma" size="1" color="black">'.$row['name'].'</font></td>';               
        echo'<td width="175"><font face="Tahoma" size="1" color="black"><a href="inbox_cont.php?id='.$row['id'].'" >'.$row['email'].'</a></font></td>';
        echo'<td width="116"><font face="Tahoma" size="1" color="black">'.$row['subject'].'</font></td>';   
        echo'</tr>';
        echo'</table>';
        echo'<hr align="center" width="100%"></hr>';
        }
        elseif($rd=='n')
        {
        echo'<table>';
        echo'<tr>';
        echo'<td width="6">&nbsp;</td>';
        echo'<td width="60" ><input name="checkbox[]" type="checkbox" id="checkbox[]" value="'.$row['id'].'"> </td>';       
        echo'<td width="170"><b><font face="Tahoma" size="1" color="black">'.$row['name'].'</font></b></td>';               
        echo'<td width="175"><font face="Tahoma" size="1" color="black"><a href="inbox_cont.php?id='.$row['id'].'" <B>'.$row['email'].'</B></a></font></td>';
        echo'<td width="116"><b><font face="Tahoma" size="1" color="black">'.$row['subject'].'</font></b></td>';   
        echo'</tr>';
        echo'</table>';
        echo'<hr align="center" width="100%"></hr>';
        }
       
        }
        echo'<br/>';
//Construct pagination hyperlinks
if ($pageno == 1) {
   echo "  ";
} else {
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=1'><img border='0' src='images/start.jpg' height='25' width='25'/></a> ";
   $prevpage = $pageno-1;
   echo "<a href='{$_SERVER['PHP_SELF']}?pageno=$prevpage'><img border='0' src='images/arrow_left.jpg' height='25' width='25'/></a>";
} // if
echo " &nbsp;( Page $pageno of $lastpage ) ";
if ($pageno == $lastpage) {
   echo "";
} else {
   $nextpage = $pageno+1;
   echo "<a href='{$_SERVER['PHP_SELF']}?pageno=$nextpage'><img border='0' src='images/arrow_right.jpg' height='25' width='25'/></a>" ;
   echo " <a href='{$_SERVER['PHP_SELF']}?pageno=$lastpage'><img border='0' src='images/end.jpg' height='25' width='25'/></a>";
} // if


?>
    </div></td>
  </tr>
  <tr>
    <td height="24" colspan="4" bgcolor="#666666"></p>
<input name="delete" type="submit" id="delete" value="Delete" /></td>
  </tr>
  <tr>  </tr>
  <tr>
    <td colspan="4"><?php
if(isset($_POST['delete']))
{
$checkbox = $_POST['checkbox']; //from name="checkbox[]"
$countCheck = count($_POST['checkbox']);

for($i=0;$i<$countCheck;$i++)
{
$del_id = $checkbox[$i];
$sql = "DELETE FROM tbl_inbox WHERE id='$del_id'";
$result = mysql_query($sql);
}

// if successful redirect to delete_multiple.php
if($result)
{
echo "<meta http-equiv=\"refresh\" content=\"0;URL=inbox_inbox.php\">";
}

}
?></td>
  </tr>
</table>

listview with alternate color(vb.net 2008)

Option Explicit On
Imports System.Data.OleDb
Imports System.Data



Public Class frmSupplier

    Dim AddMode As Boolean
    Dim Ctrl As Integer
    Dim myConn As New OleDbConnection
    Dim myCmd As New OleDbCommand
    Dim myDA As New OleDbDataAdapter
    Dim myDR As OleDbDataReader
    Dim strSQL As String
    Dim ds As DataSet
    '"Declaration (Join Club)"
    Dim Ctrl2 As Integer
    'Dim myConn As New OleDbConnection
    Dim myCmd2 As New OleDbCommand
    Dim myDA2 As New OleDbDataAdapter
    Dim myDR2 As OleDbDataReader
    Dim strSQL2 As String
    Dim ds2 As DataSet
    Function IsConnected() As Boolean
        Try
            'Checks first if already connected to database,if connected, it will be disconnected.
            If myConn.State = ConnectionState.Open Then myConn.Close()
            myConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\salesInventory.mdb;Persist Security Info=False;Jet OLEDB:Database Password = sales"

            myConn.Open()
            IsConnected = True
        Catch ex As Exception
            MsgBox(ex.Message, , "Connection")
        End Try
    End Function
    Function IsExists() As Boolean
        SearchSM(txtboxID.Text)
        If myDR.HasRows = True Then
            Return True
        Else
            Return False
        End If
    End Function


    Sub SearchSM(ByVal SearchWord As String)
        Try
            If IsConnected() = True Then
                'Queries to database
                If tsbtnSave.Enabled = True Then
                    strSQL = "SELECT * FROM SUPPLIER WHERE S_ID LIKE '" & SearchWord & "%'"
                Else
                    strSQL = "SELECT * FROM SUPPLIER WHERE S_Name LIKE '" _
                        & SearchWord & "%' OR S_Address LIKE '" _
                        & SearchWord & "%' OR S_Contactno LIKE '" _
                        & SearchWord & "%' ORDER BY S_Name"
                End If
                myCmd.CommandText = strSQL
                myCmd.Connection = myConn
                myDA.SelectCommand = myCmd
                myDR = myCmd.ExecuteReader()

                'Display results to table
                'lvwRecipients.Items.Clear()
                While (myDR.Read())
                    With lvwSupplier.Items.Add(myDR("S_ID").ToString)
                        .SubItems.Add(myDR("S_Name"))
                        .SubItems.Add(myDR("S_Address"))
                        .SubItems.Add(myDR("S_Contactno"))
                    End With
                End While
            End If
        Catch ex As Exception
            MsgBox(ex.Message, , "SearchSM")
        End Try
        '---------inserted code to count the number of columns
        ds = New DataSet
        myDA = New OleDbDataAdapter(strSQL, myConn)
        myDA.Fill(ds, "MyData")
        Dim kRow1 As Integer = ds.Tables("MyData").Rows.Count 'TOTAL ROW
        lblTotal.Text = "Total No. of Recipients : " + kRow1.ToString
        '------------------------end

        lvwSupplier.Items.Clear()
        Dim i As Integer 'COLUMNS
        Dim iCol As Integer = ds.Tables("MyData").Columns.Count 'TOTAL COLUMN
        Dim k As Integer 'ROWS
        Dim kRow As Integer = ds.Tables("MyData").Rows.Count 'TOTAL ROW
        Dim ThisRow(4) As String '//=For each Loop of ROW

        For k = 0 To kRow - 1
            For i = 0 To iCol - 1
                ThisRow(i) = ds.Tables("MyData").Rows(k).Item(i).ToString
            Next
            Dim lsvi As New ListViewItem(ThisRow, 2)

            '//=Start Alternate Color
            If k / 2 <> Int(k / 2) Then '//=Determine Alternate Row(odd or not)
                lsvi.BackColor = Color.SkyBlue
            Else
                lsvi.BackColor = Color.LightCyan


            End If
            '//=End Alternate Color
            lvwSupplier.Items.Add(lsvi)
        Next
    End Sub
    Sub SaveEntry(ByVal S_ID As Integer, ByVal S_Name As String, _
                  ByVal S_Address As String, ByVal S_Contactno As String)
        Try
            If IsExists() = False Then
                'Adds new record to the table
                strSQL = "INSERT INTO SUPPLIER(S_ID, S_Name, S_Address, S_Contactno) VALUES('" _
                 & S_ID & "' ,'" _
                 & S_Name.ToUpper & "' ,'" _
                 & S_Address.ToUpper & "' ,'" _
                 & S_Contactno & "')"
            Else
                'Updates record from the table
                strSQL = "UPDATE SUPPLIER SET S_ID = '" & S_ID & "'," _
                     & "S_Name = '" & S_Name & "'," _
                     & "S_Address = '" & S_Address & "'," _
                     & "S_Contactno = '" & S_Contactno & "'"
                ' & "WHERE S_ID = " & Ctrl & ""
            End If
            Dim myCmd As New OleDb.OleDbCommand
            myCmd.CommandText = strSQL
            myCmd.Connection = myConn
            myCmd.ExecuteNonQuery()
            tsbtnAdd.Enabled = True
            tsbtnSave.Enabled = False
            ' LockTextboxes()
            txtboxID.Text = String.Empty
            txtBoxName.Text = String.Empty
            txtBoxAddress.Text = String.Empty
            txtBoxContact.Text = String.Empty

        Catch ex As Exception
            MsgBox(ex.Message, , "Save Recipient")

        End Try

    End Sub
    Sub DeleteEntry(ByVal S_ID As Integer, ByVal S_Name As String, _
                  ByVal S_Address As String, ByVal S_Contactno As String)

        Dim confirmDelete As DialogResult
        confirmDelete = MessageBox.Show("Are you sure you want to delete this Supplier?", _
                                         "SMS Sytem", MessageBoxButtons.YesNoCancel, _
                                         MessageBoxIcon.Warning)

        If confirmDelete = Windows.Forms.DialogResult.Yes Then
            Try
                If IsExists() = True Then
                    'Updates record from the table
                    strSQL = "DELETE * FROM SUPPLIER WHERE S_ID = " & txtboxID.Text & ""
                End If
                Dim myCmd As New OleDb.OleDbCommand
                myCmd.CommandText = strSQL
                myCmd.Connection = myConn
                myCmd.ExecuteNonQuery()

                tsbtnCancel.PerformClick()
            Catch ex As Exception
                MsgBox(ex.Message, , "Delete Supplier")
            End Try

        ElseIf confirmDelete = Windows.Forms.DialogResult.Cancel Then
            tsbtnCancel.PerformClick()
        End If

    End Sub
    Sub Locked(ByVal Mode As Boolean)
        For Each Ctrl As Control In Me.Controls
            If TypeOf Ctrl Is TextBox Then
                Ctrl.Enabled = Not Mode
                Ctrl.Text = ""
                If Ctrl.Name = "txtBoxID" Then
                    Ctrl.Focus()
                End If
                ' ElseIf TypeOf Ctrl Is ComboBox Then
                'Ctrl.Enabled = Not Mode
                ' If Ctrl.Name = "cboClubName" Then
                '      Ctrl.Focus()
                '   End If
                'ElseIf TypeOf Ctrl Is Button Then
                'Ctrl.Enabled = Not Mode
                'If Ctrl.Name = "btnAddClub" Then
                '    Ctrl.Focus()
                ' Else
                '      Ctrl.Enabled = True
                '   End If
            End If
        Next Ctrl
    End Sub

    Sub SetSearchBox()
        If tstbSearchSupplier.Text = "" Then
            tstbSearchSupplier.Text = "Type here to search"
            tstbSearchSupplier.ForeColor = Color.Gray
        End If
    End Sub

    Private Sub frmSupplier_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'TODO: This line of code loads data into the 'DsClub.CLUB' table. You can move, or remove it, as needed.
        SearchSM("")
        Locked(True)
        SetSearchBox()
    End Sub
    Private Sub tsbtnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tsbtnAdd.Click
        tsbtnAdd.Enabled = False
        tsbtnSave.Enabled = True
        tsbtnCancel.Enabled = True
        AddMode = True
        Locked(False)
    End Sub
    Private Sub tsbtnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tsbtnSave.Click
        'If txtBoxName.Text = "" Or txtBoxAddress.Text = _
        ' "" Or txtBoxContact.Text = "" Then
        'MessageBox.Show("Please fill up all the data.", "Sales and Inventory Sytem", _
        '  MessageBoxButtons.OK, MessageBoxIcon.Information)
        If IsConnected() = True Then
            SaveEntry(txtboxID.Text, txtBoxName.Text, txtBoxAddress.Text, txtBoxContact.Text)
            SearchSM("")
            'End If
            tsbtnCancel.Enabled = False
            tsbtnDelete.Enabled = False
            Locked(True)
        End If
    End Sub

    Private Sub lvwSupplier_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lvwSupplier.MouseClick
        lvwSupplier_MouseDoubleClick(sender, e)
    End Sub

    Private Sub lvwSupplier_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lvwSupplier.MouseDoubleClick
        tsbtnSave.Enabled = True
        tsbtnDelete.Enabled = True
        tsbtnAdd.Enabled = True
        tsbtnCancel.Enabled = True
        Locked(False)
        With txtboxID
            .BackColor = Color.White
            .ForeColor = Color.Red
            .Enabled = True
        End With

        With lvwSupplier.SelectedItems(0)
            Ctrl = .SubItems(0).Text
            txtBoxName.Text = .SubItems(1).Text
            txtBoxAddress.Text = .SubItems(2).Text
            txtBoxContact.Text = .SubItems(3).Text
            'txtYear_Level.Text = .SubItems(4).Text
        End With
        txtboxID.Text = Ctrl 'gets the Ctrl

        ' for the family name
        'Dim strFamilyName As String = txtDummyName.Text
        'Dim strArrFamilyName() As String
        'Dim countFamilyName As Integer
        'strArrFamilyName = strFamilyName.Split(",")
        'For countFamilyName = 0 To strArrFamilyName.Length - 1
        'txtFamilyName.Text = (strArrFamilyName(countFamilyName))
        'Exit For
        'Next
        'for the family name

        'for the first name
        'Dim strFirstName As String = txtDummyName.Text
        'Dim strArrFirstName() As String
        'Dim countFirstName As Integer
        'Dim test As String
        'strArrFirstName = strFirstName.Split(", ")
        '  For countFirstName = 1 To strArrFirstName.Length - 1
        'test = (strArrFirstName(countFirstName)).TrimStart.TrimEnd
        'Dim myString As String = test
        'Dim myChar As Char() = {"A"c, "B"c, "C"c, "D"c, "E"c, "F"c, "G"c, "H"c, _
        ' "I"c, "J"c, "K"c, "L"c, "M"c, "N"c, "O"c, "P"c, "Q"c, "R"c, _
        ' "S"c, "T"c, "U"c, "V"c, "W"c, "X"c, "Y"c, "Z"c, "."c}
        'Dim NewString As String = myString.TrimEnd(myChar)
        'txtFirstName.Text = NewString.TrimEnd
        'Exit For
        'Next
        ' for the first name

        'for the middle name
        'Dim strMiddleInitial As String = Microsoft.VisualBasic.Right(txtDummyName.Text, 2)
        'txtMiddleInitial.Text = strMiddleInitial.TrimStart
        'for the middle name
    End Sub
    Private Sub tsbtnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tsbtnDelete.Click

        If IsConnected() = True Then
            DeleteEntry(txtboxID.Text, txtBoxName.Text, txtBoxAddress.Text, txtBoxContact.Text)
            SearchSM("")
        End If
        tsbtnAdd.Enabled = True
        tsbtnEdit.Enabled = True
        tsbtnSave.Enabled = False
        tsbtnCancel.Enabled = False
        tsbtnDelete.Enabled = False
    End Sub
    Private Sub tsbtnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tsbtnCancel.Click
        Locked(True)
        tsbtnCancel.Enabled = False
        tsbtnDelete.Enabled = False
        tsbtnSave.Enabled = False
        tsbtnAdd.Enabled = True

    End Sub

    Private Sub tstbSearchSupplier_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles tstbSearchSupplier.Click
        If tstbSearchSupplier.Text = "Type here to search" Then
            tstbSearchSupplier.Text = ""
            tstbSearchSupplier.ForeColor = Color.Black
        ElseIf tstbSearchSupplier.Text <> "" Then
            tstbSearchSupplier.SelectAll()
        End If
    End Sub

    Private Sub tstbSearchSupplier_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles tstbSearchSupplier.KeyDown

    End Sub

    Private Sub tstbSearchSupplier_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles tstbSearchSupplier.KeyPress
        If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
            'Checks first if system is connected then if true, continues to search
            If IsConnected() = True Then Call SearchSM(tstbSearchSupplier.Text)
            e.Handled = True
        ElseIf e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Back) Then
            SearchSM("")
            'e.Handled = True
        End If
    End Sub

    Private Sub txtboxID_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtboxID.KeyPress
        Dim strAllowableChars As String
        strAllowableChars = "0123456789"
        If InStr(strAllowableChars, e.KeyChar) = 0 And Asc(e.KeyChar) <> 8 Then
            e.Handled = True
        End If

        If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
            txtBoxName.Focus()
            e.Handled = True
        End If
    End Sub

    Private Sub txtBoxName_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtBoxName.KeyPress

      
    End Sub

    Private Sub txtBoxAddress_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtBoxAddress.KeyPress
       
    End Sub

    Private Sub txtBoxContact_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtBoxContact.KeyPress
       
    End Sub

    Private Sub tstbSearchSupplier_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles tstbSearchSupplier.LostFocus
        SetSearchBox()
    End Sub

    Private Sub tstbSearchSupplier_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles tstbSearchSupplier.TextChanged
        Try
            Dim sItem As ListViewItem = lvwSupplier.FindItemWithText(tstbSearchSupplier.Text, True, 0)
            If Not sItem Is Nothing Then
                With lvwSupplier.Items(sItem.Index)
                    .EnsureVisible()
                    .Selected = True
                End With
            End If
        Catch ex As Exception

        End Try
    End Sub

    Private Sub lvwSupplier_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lvwSupplier.SelectedIndexChanged

    End Sub

    Private Sub ToolStrip1_ItemClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolStripItemClickedEventArgs) Handles ToolStrip1.ItemClicked

    End Sub
End Class