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();}}

使用时：

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