06-12-16, 04:26 AM
![[صورة مرفقة: error2.gif]](http://www.bpsoftware.com/images/blog/error2.gif)
PHP كود :
Private Sub ComboBox1_Validated(sender As Object, e As System.EventArgs) Handles ComboBox1.Validated
Dim resultIndex As Integer = sender.FindStringExact(sender.Text)
If resultIndex < 0 Then ErrorProvider1.SetError(sender, "Not found.") Else ErrorProvider1.Clear()
End Sub
