我有一个带有TextBlock的自定义控件:
<Style TargetType="{x:Type local:CustControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:CustControl}">
<Border Background="Blue"
Height="26"
Width="26" Margin="1">
<TextBlock x:Name="PART_CustNo"
FontSize="10"
Text="{Binding Source=CustControl,Path=CustNo}"
Background="PaleGreen"
Height="24"
Width="24"
Foreground="Black">
</TextBlock>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
此自定义控件具有依赖项属性:
public class CustControl : Control
{
static CustControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(CustControl), new FrameworkPropertyMetadata(typeof(CustControl)));
}
public readonly static DependencyProperty CustNoProperty = DependencyProperty.Register("CustNo", typeof(string), typeof(CustControl), new PropertyMetadata(""));
public string CustNo
{
get { return (string)GetValue(CustNoProperty); }
set { SetValue(CustNoProperty, value); }
}
}
我希望在Custom Control的每个实例中,TextBlock的“Text”属性中传递“CustNo”属性的值。 但我的:
Text="{Binding Source=CustControl,Path=CustNo}"
无效。
还没有使用Path = CustNoProperty:
Text="{Binding Source=CustControl,Path=CustNoProperty}"
答案 0 :(得分:10)
你需要一个TemplateBinding,比如
<TextBlock
Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=CustNo}" />
答案 1 :(得分:6)
尝试此SO question的答案。我想你会想要第三个例子。即:
{Binding Path=CustNo, RelativeSource={RelativeSource TemplatedParent}}