private void NameTB_Validating_1(object sender, CancelEventArgs e) { string Name = NameTB.Text.Trim(); if (string.IsNullOrEmpty(Name)) { NameErr.SetError(NameTB, "You have to enter a name"); e.Cancel = true; } }
private void NameTB_Validated(object sender, EventArgs e) { NameErr.Clear(); }