ตอนที่ 9 : Xamarin กับ Android การสร้าง Dialog Popup และ Alert Dialog / Toast Make Text (C#)

using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;

namespace myFirstApps
{
    [Activity(Label = "myFirstApps", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.Main);

            // Button Open
            Button btnOpen = FindViewById<Button>(Resource.Id.btnOpen);
            btnOpen.Click += (object sender, EventArgs e) =>
            {
                btnOpenClick(sender, e);
            };

        }


        private void btnOpenClick(object sender, EventArgs e)
        {

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            AlertDialog alert = builder.Create();
            alert.SetTitle("Your Title");
            alert.SetMessage("Test message sample.");
            alert.SetButton("OK", (s, ev) =>
            {
                Toast.MakeText(this, "You click : OK", ToastLength.Short).Show();
            });
            alert.SetButton2("Cancel", (s, ev) =>
            {
                Toast.MakeText(this, "You click : Cancel", ToastLength.Short).Show();
            });
            alert.Show();
        }


    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <Button
        android:id="@+id/button1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Simple Dialog" />
    <Button
        android:text="Complext Dialog"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/button2" />
</LinearLayout>