This browser is no longer supported.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

In this article

This example shows how to create a view of a data collection in Extensible Application Markup Language (XAML). Views allow for the functionalities of grouping, sorting, filtering, and the notion of a current item.

Example

In the following example, the static resource named places is defined as a collection of Place objects, in which each Place object is consisted of a city name and the state. The prefix src is mapped to the namespace where the data source Places is defined. The prefix scm maps to "clr-namespace:System.ComponentModel;assembly=WindowsBase" and dat maps to "clr-namespace:System.Windows.Data;assembly=PresentationFramework" .

The following example creates a view of the data collection that is sorted by the city name and grouped by the state.

<Window.Resources>
  <src:Places x:Key="places"/>
  <CollectionViewSource Source="{StaticResource places}" x:Key="cvs">
    <CollectionViewSource.SortDescriptions>
      <scm:SortDescription PropertyName="CityName"/>
    </CollectionViewSource.SortDescriptions>
    <CollectionViewSource.GroupDescriptions>
      <dat:PropertyGroupDescription PropertyName="State"/>
    </CollectionViewSource.GroupDescriptions>
  </CollectionViewSource>
The view can then be a binding source, as in the following example:
<ListBox ItemsSource="{Binding Source={StaticResource cvs}}"
         DisplayMemberPath="CityName" Name="lb">
  <ListBox.GroupStyle>
    <x:Static Member="GroupStyle.Default"/>
  </ListBox.GroupStyle>
</ListBox>
For bindings to XML data defined in an XmlDataProvider resource, precede the XML name with an @ symbol.
<XmlDataProvider x:Key="myTasks" XPath="Tasks/Task">
    <x:XData>
        <Tasks xmlns="">
            <Task Name="Groceries" Priority="2" Type="Home">
<CollectionViewSource x:Key="mySortedTasks"
                      Source="{StaticResource myTasks}">
    <CollectionViewSource.SortDescriptions>
        <scm:SortDescription PropertyName="@Priority" />
    </CollectionViewSource.SortDescriptions>
    <CollectionViewSource.GroupDescriptions>
        <dat:PropertyGroupDescription PropertyName="@Priority" />
    </CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
See also
CollectionViewSource
Get the Default View of a Data Collection
Data Binding Overview
How-to Topics