如何在xamarin StackLayout中为TextEdit和Button提供ID

Question

我怎样才能为TextEdit（电子邮件，密码）提供ID，并在下面的Button中保存StackLayout。我选择了Cross Platform App(Xamarin.Forms or Native)来构建一个简单的xamarin应用程序。下面是MainPage.xaml。我希望收到我的MainActivity.cs中的电子邮件值。

<Entry Placeholder="Email Id"></Entry>
<Entry Placeholder="Password" IsPassword="True"></Entry>

public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        EditText emailText;
        Button savebtn;

        protected override void OnCreate(Bundle savedInstanceState)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(savedInstanceState);
            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
            LoadApplication(new App());


        }

        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)
        {
            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);

            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
        }

    }

Answer 1

您可以将x:Name属性设置为元素，因此，在这种情况下：

<Entry x:Name="emailEntry" Placeholder="Email Id"></Entry>
<Entry x:Name="passwordEntry" Placeholder="Password" IsPassword="True"></Entry>

然后，在您的页面代码隐藏类（Page.xaml.cs）中，您可以访问这些元素：

var emailText = emailEntry.Text;
var passwordText = passwordEntry.Text;