如何根据开关输入在 xamarin 表单内容页面中 show/hide 条目？

Question

我是 Xamarin 表单的新手。

我正在尝试在注册页面中实现一个开关，当切换时，它应该在同一页面上显示另外 3 个条目，如果没有，它只显示前 3 个条目（电子邮件、密码和确认密码） .

我正在使用 MVVM，所以我已经创建了 RegistraPageViewModel，并且很乐意继续使用这个架构。

附图是我想在切换开关之前和之后通过注册页面完成的。 RegistrationPage.xaml 下方的代码（仅与问题相关的部分）

<StackLayout Orientation="Horizontal" Spacing="10">
       <Label Text="Are you a service provider?"/>
       <Label Text="Yes/No"/>

       <Switch x:Name="SwitchIsToggled" HorizontalOptions="CenterAndExpand"
               OnColor="Orange"
               IsToggled="False"
               ThumbColor="{StaticResource MainButtonColor}"
               />

   </StackLayout>
   
   <StackLayout x:Name="IsProvider" IsVisible="{Binding SwitchIsToggled}">
       <StackLayout.Triggers>

           <DataTrigger TargetType="StackLayout"
                        Binding="{Binding Source={x:Reference IsProvider}}">
               
              <Setter Property="IsVisible" Value="false"/>
           </DataTrigger>

       </StackLayout.Triggers>
    <Entry x:Name="providerCompanyEntry"
           Placeholder="Company Name"
           Keyboard="Default"/>

    <Entry x:Name="timEntry"
           Placeholder="TIN"
           Keyboard="Numeric"/>

    <Entry x:Name="addressEntry"
           Placeholder="Address"
           Keyboard="Default"/>
   </StackLayout>

Answer 1

您只需要将Entry的IsVisible属性绑定到Switch的IsToggled属性即可。[=17] =]

有点像：

<StackLayout>
        <Switch x:Name="SwitchIsToggled" HorizontalOptions="CenterAndExpand"
           OnColor="Orange"
           IsToggled="False"
           ThumbColor="{StaticResource MainButtonColor}"
           />
        <Entry Placeholder="email"></Entry>
        <Entry Placeholder="password"></Entry>
        <Entry Placeholder="confirm password"></Entry>
        <Entry Placeholder="Company Name" IsVisible="{Binding IsToggled}" BindingContext="{x:Reference SwitchIsToggled}"></Entry>
        <Entry Placeholder="TIN" IsVisible="{Binding IsToggled}" BindingContext="{x:Reference SwitchIsToggled}"></Entry>
        <Entry Placeholder="Address" IsVisible="{Binding IsToggled}" BindingContext="{x:Reference SwitchIsToggled}"></Entry>
</StackLayout>

更新 :

 public Page2()
    {
        InitializeComponent();
        cname.BindingContext = SwitchIsToggled;
        cname.SetBinding(Entry.IsVisibleProperty, "IsToggled");
        tin.BindingContext = SwitchIsToggled;
        tin.SetBinding(Entry.IsVisibleProperty, "IsToggled");
        address.BindingContext = SwitchIsToggled;
        address.SetBinding(Entry.IsVisibleProperty, "IsToggled");
    }

xaml:

<StackLayout>
        <Switch x:Name="SwitchIsToggled" HorizontalOptions="CenterAndExpand"
           OnColor="Orange"
           IsToggled="False"
           ThumbColor="{StaticResource MainButtonColor}"
           />
        <Entry Placeholder="email"></Entry>
        <Entry Placeholder="password"></Entry>
        <Entry Placeholder="confirm password"></Entry>
        <Entry x:Name="cname" Placeholder="Company Name"></Entry>
        <Entry x:Name="tin" Placeholder="TIN" ></Entry>
        <Entry x:Name="address" Placeholder="Address" ></Entry>
</StackLayout>

如何根据开关输入在 xamarin 表单内容页面中 show/hide 条目？

How to show/hide entries in xamarin forms content page based on a switch input?

xamarin.forms

mvvm

switch-statement

content-pages

stacklayout