Bind to a property of a collection declared in xaml

Question

There is a UserControl with the property - a collection of class Item, in Item is dep property Name. There ViewModel, property that needs bind to Name of Item. ViewModel is in the UserControl DataContext.

code:

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>

There is not work. Please, help me.

Same thing I tell everyone else: Learn MVVM before ever writing a single line of code in WPF. ObservableCollections don't belong in UserControls. — Federico Berasategui, Aug 29 '13 at 18:19
Because [UI is not Data](http://stackoverflow.com/a/14382137/643085). Therefore you shouldn't put Data into UI classes. — Federico Berasategui, Aug 29 '13 at 18:53
Item not Model class, is UI class. Like this `public ObservableCollection` — ortuomka, Aug 29 '13 at 18:58
Custom grid, with custom column collection, and bind column property from dataContext of grid — ortuomka, Aug 29 '13 at 19:08

score 0 · Answer 1 · answered Aug 29 '13 at 20:50

       <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>

Bind to a property of a collection declared in xaml

1 Answers1