我有两个需要绑定的属性。一个是Value,它是UserControl的属性,第二个是来自image元素的属性。图像元素在Window中。 Window是在后面的代码(UserControl)中进行的。
我需要添加什么才能在图像src和属性Value之间实现正确绑定。代码如下所示。
<UserControl x:Class="nnnn">
<UserControl.Resources>
<propSheet:BitmapConverter x:Key="bitmapConverter" />
<Window x:Key="imagePopup"
Width="640"
Height="480">
<Grid Background="LightGray">
<Image Grid.Row="0" Source="{Binding Path=Value, Converter={StaticResource bitmapConverter}}" />
<TextBlock Text="{Binding Path=Value}"></TextBlock>
<Button Grid.Row="1"
Width="25"
HorizontalAlignment="Left"
VerticalAlignment="Bottom"
Click="OpenFile_Click">
...
</Button>
</Grid>
</Window>
</UserControl.Resources>
<Grid>
<Button Click="ViewImage_Click">View Image</Button>
</Grid>
答案 0 :(得分:1)
在显示之前,您必须将Window的DataContext属性设置为UserControl实例:
private void ViewImage_Click(object sender, RoutedEventArgs e)
{
var window = Resources["imagePopup"] as Window;
window.DataContext = this; // the UserControl
window.Show();
}