How do I bind data to a property in a collection behind a collection view?
I currently have a collection with a HasChanges property (each object in the collection also has its own HasChanges property) and the collection is the source of my CollectionViewSource.
When I try to bind the HasChanges property of the collection behind the CollectionViewSource to one of my custom controls, it binds to the HasChanges property of the currently selected object, instead of the HasChanges property of the CollectionViewSource's source collection. Is there a way that I can explicitly bind the binding to the collection object and not the objects in the collection?
My code looks something like this:
<Window x:Class="CollectionEditWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Local="clr-namespace:My.Local.Namespace;assembly=My.Local.Namespace">
<Window.Resources>
<CollectionViewSource x:Name="CVS" x:Key="MyCollectionViewSource" />
</Window.Resources>
<Local:MyCustomControl HasChanges="{Binding HasChanges, Source={StaticResource
MyCollectionViewSource}}">
<!-- Code to set up the databinding of the custom control to the CollectionViewSource-->
</Local:MyCustomControl>
</Window>
Thank.
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When you bind to the CollectionViewSource, you get a CollectionView that has a SourceCollection that you can use to get the collection behind the CollectionViewSource, for example:
<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib">
<Grid.Resources>
<x:Array x:Key="data" Type="{x:Type sys:String}">
<sys:String>a</sys:String>
<sys:String>bb</sys:String>
<sys:String>ccc</sys:String>
<sys:String>dddd</sys:String>
</x:Array>
<CollectionViewSource x:Key="cvsData" Source="{StaticResource data}"/>
</Grid.Resources>
<StackPanel>
<ListBox ItemsSource="{Binding Source={StaticResource cvsData}}"/>
<TextBlock Text="{Binding Source={StaticResource cvsData}, Path=Length, StringFormat='{}Length bound to current String = {0}'}"/>
<TextBlock Text="{Binding Source={StaticResource cvsData}, Path=SourceCollection.Length, StringFormat='{}Length bound to source array = {0}'}"/>
</StackPanel>
</Grid>
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