Number and Alphabets Validation in VB.Net


Fig: Design
Source Code:

Public Class Validation

    Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
       
  If (IsNumeric(e.KeyChar()) Or (Asc(e.KeyChar()) = 8)) Then
            e.Handled = False

        Else
            e.Handled = True
            MsgBox("Enter only digits")
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If (String.IsNullOrEmpty(TextBox1.Text)) Then
            ErrorProvider1.SetError(TextBox1, "Required field")
        End If
    End Sub

    Private Sub TextBox2_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress
        If (((Asc(e.KeyChar()) > 64 And Asc(e.KeyChar()) < 92) Or (Asc(e.KeyChar()) > 96 And Asc(e.KeyChar()) < 123))) Then
            e.Handled = False
        Else
            e.Handled = True
            ErrorProvider1.SetError(TextBox2, "Only alphabets")
            MsgBox("Only Alphabets")
        End If
    End Sub
End Class

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