介绍
背水一战 Windows 10 之 绑定
- TemplateBinding 绑定
- 与 RelativeSource 绑定
- 与 StaticResource 绑定
示例
1、演示 TemplateBinding 的用法
Bind/TemplateBindingDemo.xaml
<Page x:Class="Windows10.Bind.TemplateBindingDemo" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Bind" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="Transparent"> <StackPanel Margin="10 0 10 10"> <!-- 演示 TemplateBinding 的用法 TemplateBinding 是一个简单版的 Binding,用于在 ControlTemplate 中做属性之间的绑定(如果需要 Binding 的其他特性该怎么做呢?参见 BindingRelativeSource.xaml) --> <StackPanel.Resources> <Style x:Key="ButtonStyle" TargetType="Button"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Button"> <StackPanel> <!-- ContentPresenter 的 Width 绑定 Button 的 Width ContentPresenter 的 Height 绑定 Button 的 Width --> <ContentPresenter HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Foreground="White" Background="Orange" Width="{TemplateBinding Width}" Height="{TemplateBinding Width}" /> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> </StackPanel.Resources> <Button Content="我是 Button" Width="128" Style="{StaticResource ButtonStyle}" /> </StackPanel> </Grid> </Page>
2、演示 Binding 中的一个扩展标记 RelativeSource 的应用
Bind/BindingRelativeSource.xaml
<Page x:Class="Windows10.Bind.BindingRelativeSource" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Bind" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="Transparent"> <StackPanel Margin="10 0 10 10"> <!-- 演示 Binding 中的一个扩展标记 RelativeSource 的应用,其用于指定关联数据源为 Self 或 TemplatedParent --> <!-- RelativeSource={RelativeSource TemplatedParent} - 仅在 ControlTemplate 中适用,用于指定数据源来自引用了该 ControlTemplate 的 Control --> <StackPanel.Resources> <Style x:Key="ButtonStyle" TargetType="Button"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Button"> <StackPanel> <ContentPresenter Foreground="White" /> <!-- TemplateBinding 是一个简单版的 Binding,他是 OneWay 的 如果在设计 ControlTemplate 时需要 Binding 的其他特性(比如我想要 TwoWay 的模式)该怎么办呢? 那就需要通过 Binding 来做绑定(这样就可以使用 Binding 的各种特性了),然后通过 RelativeSource={RelativeSource TemplatedParent} 来指定数据源来自引用了该 ControlTemplate 的 Control --> <Slider Minimum="1" Maximum="100" Foreground="White" IsThumbToolTipEnabled="False" Width="{TemplateBinding Width}" Value="{Binding Content, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" /> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> </StackPanel.Resources> <Button Width="300" Content="50" Style="{StaticResource ButtonStyle}" Margin="5" /> <!-- RelativeSource={RelativeSource Self} - 指定数据源为自己本身 --> <TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=Tag}" Tag="webabcd" Margin="5" /> </StackPanel> </Grid> </Page>
3、演示如何与 StaticResource 绑定
Bind/BindingStaticResource.xaml
<Page x:Class="Windows10.Bind.BindingStaticResource" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Bind" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="Transparent"> <StackPanel Margin="10 0 10 10" x:Name="panel"> <!-- 演示如何与 StaticResource 绑定 关于 StaticResource 的说明请参见:/Resource/StaticResourceDemo.xaml --> <StackPanel.Resources> <x:Double x:Key="TextFontSize">32</x:Double> <SolidColorBrush x:Key="TextForeground" Color="#00FF00" /> <Style x:Key="MyStyle" TargetType="TextBox"> <!--绑定 StaticResource 资源--> <Setter Property="FontSize" Value="{Binding Source={StaticResource TextFontSize}}"/> <!--绑定 StaticResource 资源的简化写法--> <Setter Property="Foreground" Value="{StaticResource TextForeground}"/> </Style> </StackPanel.Resources> <!--绑定 StaticResource 资源--> <TextBox Text="我是TextBox" Style="{Binding Source={StaticResource MyStyle}}" Margin="5" /> <!--绑定 StaticResource 资源的简化写法--> <TextBox Text="我是TextBox" Style="{StaticResource MyStyle}" Margin="5" /> <!--演示如何在 C# 端绑定 StaticResource--> <TextBox Name="textBox" Text="我是TextBox" Margin="5" /> </StackPanel> </Grid> </Page>
Bind/BindingStaticResource.xaml.cs
/* * 演示如何与 StaticResource 绑定(关于 StaticResource 的说明请参见:/Resource/StaticResourceDemo.xaml) */ using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Data; namespace Windows10.Bind { public sealed partial class BindingStaticResource : Page { public BindingStaticResource() { this.InitializeComponent(); this.Loaded += BindingStaticResource_Loaded; } // 在 C# 端绑定 StaticResource private void BindingStaticResource_Loaded(object sender, RoutedEventArgs e) { // 实例化 Binding 对象 Binding binding = new Binding() { Source = panel.Resources["MyStyle"] }; // 将目标对象的目标属性与指定的 Binding 对象关联 BindingOperations.SetBinding(textBox, TextBox.StyleProperty, binding); } } }