ตอนที่ 6 : การสร้าง Event Handler และ UIAlertView ของ Xamarin.iOS บน Visual Studio C#

UIAlertView alert = new UIAlertView ("Title", "The message", null, "OK", null);
alert.Show();

var alert = new UIAlertView ("Alert Title", "Choose from two buttons", null, "OK", new string[] {"Cancel"});
alert.Clicked += (s, b) => {
    label1.Text = "Button " + b.ButtonIndex.ToString () + " clicked";
    Console.WriteLine ("Button " + b.ButtonIndex.ToString () + " clicked");
};
alert.Show();

var alert = new UIAlertView {
  Title = "custom buttons alert", 
  Message = "this alert has custom buttons"
};
alert.AddButton("OK");
alert.AddButton("custom button 1");
alert.AddButton("Cancel");
// last button added is the 'cancel' button (index of '2')
alert.Clicked += delegate(object a, UIButtonEventArgs b) {
    Console.WriteLine ("Button " + b.ButtonIndex.ToString () + " clicked"); };
alert.Show ();

        partial void btnSubmit_TouchUpInside(UIButton sender)
        {
            UIAlertView alert = new UIAlertView("Hello", "Sawatdee Khun : "+ this.txtName.Text, null, "OK", null);
            alert.Show();
        }