小编kir*_*ljk的帖子

我遇到了自定义依赖项属性绑定的问题.我们有:自定义用户控件,具有一个依赖属性并绑定到self:

<UserControl x:Class="WpfApplication1.SomeUserControl"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300" DataContext="{Binding RelativeSource={RelativeSource Mode=Self}}">
<Grid>
    <Label>
        <Label.Template>
            <ControlTemplate>
                <Label Content="{Binding MyTest}"/>
            </ControlTemplate>
        </Label.Template>
    </Label>
</Grid>

......和控制代码:

public partial class SomeUserControl : UserControl
{
    public SomeUserControl()
    {
        InitializeComponent();
    }

    public static readonly DependencyProperty MyTestProperty = DependencyProperty.Register("MyTest", typeof(int), typeof(SomeUserControl));

    public int MyTest
    {
        get { return (int)GetValue(MyTestProperty); }
        set { SetValue(MyTestProperty, value); }
    }
}

我尝试使用此控件绑定到简单模型类的一些简单属性:

<UserControl x:Class="WpfApplication1.AnotherUserControl"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:wpfApplication1="clr-namespace:WpfApplication1"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300" DataContext="{Binding RelativeSource={RelativeSource Mode=Self}}">
<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"/> …