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