C# 使用Xamarin 开发应用 - Alert Box

public static class AlertExtension	{		public static void ShowAlert(this Activity activity ,string msg,string title = "", string btnText = "OK"){			AlertDialog.Builder builder = new AlertDialog.Builder(activity);			builder.SetTitle(title);			builder.SetMessage(msg);			builder.SetCancelable(false);			builder.SetPositiveButton(btnText, delegate {					// it is alert ,keep it simple , do nothing here 				});			builder.Show();		}	}

if(txtPwd.Text != txtCfmPwd.Text){					this.ShowAlert("Password and confirmed password not match");				}