Question

有一个带有属性的UserControl - 类Item的集合，在Item中是dep属性Name。有ViewModel，需要绑定到Name of Item的属性。 ViewModel位于UserControl DataContext中。

代码：

public partial class UserControl1
{
     public ObservableCollection<Item> Items { get; set; }
...

public class Item : DependencyObject
{
     public string Name
     {
          get { return (string)GetValue(NameProperty); }
          set { SetValue(NameProperty, value); }
     }

     public static readonly DependencyProperty NameProperty = DependencyProperty.Register("Name", typeof(string), typeof(Item), new     
     PropertyMetadata(null));
}

public class ViewModel
{
     public string Name { get; set; }
}

userControl.DataContext = new ViewModel { Name = "Test" };

<wpfApplication6:UserControl1 x:Name="userControl">
            <wpfApplication6:UserControl1.Items>
                <wpfApplication6:Item Name="{Binding Name, RelativeSource={RelativeSource FindAncestor,   
                 AncestorType=wpfApplication6:UserControl1}}" />
            </wpfApplication6:UserControl1.Items>
</wpfApplication6:UserControl1>

没有工作。求你帮帮我。

Answer 1

       <wpfApplication6:UserControl1 x:Name="userControl">
            <wpfApplication6:UserControl1.Items>
                 <wpfApplication6:Item Name="{Binding Path=DataContext.Name, RelativeSource={RelativeSource FindAncestor,   
                      AncestorType=wpfApplication6:UserControl1}}" />
            </wpfApplication6:UserControl1.Items>
       </wpfApplication6:UserControl1>

绑定到xaml中声明的集合的属性

1 个答案: