GroupContext Class

Provides context-specific information for an element located in the header or footer sections of a group.

Syntax

Visual Basic
C#

'Declaration
 
Public Class GroupContext

'Usage
 
Dim instance As GroupContext

public class GroupContext

Remarks

The GroupContext attached property will only be set on the first (i.e., root) element in the DataTemplate and can be accessed through a RelativeSource binding using the Self mode (see examples example below). Any child elements in the template can access the parent's GroupContext through an ElementName binding. For example:

Example

The following examples demonstrates how to dynamically display a label in group headers.

The code for the LanguageToVisibilityConverter class can be found in the Additional Resources section of the documentation.

XAML

<sldg:DataGridControl x:Name="sldgDataGridControl"
                      ItemsSource="{Binding Path=Orders}">
    <sldg:DataGridControl.Resources>
        <local:LanguageToVisibilityConverter x:Key="languageToVisibilityConverter" />
    </sldg:DataGridControl.Resources>
    <sldg:DataGridControl.GroupDescriptions>
        <sldg:DataGridGroupDescription PropertyName="ShipCountry">
            <sldg:DataGridGroupDescription.GroupConfiguration>
                <sldg:DataGridGroupConfiguration>
                    <sldg:DataGridGroupConfiguration.Headers>
                        <DataTemplate>
                            <TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=(sldg:DataGridControl.GroupContext).GroupValue, StringFormat='{}{0} is a French-speaking country'}"
                                       Visibility="{Binding RelativeSource={RelativeSource Self}, Path=(sldg:DataGridControl.GroupContext), Converter={StaticResource languageToVisibilityConverter}}" />                   
                        </DataTemplate>
                    </sldg:DataGridGroupConfiguration.Headers>
                </sldg:DataGridGroupConfiguration>
            </sldg:DataGridGroupDescription.GroupConfiguration>
        </sldg:DataGridGroupDescription>
    </sldg:DataGridControl.GroupDescriptions>
</sldg:DataGridControl>

Inheritance Hierarchy

System.Object
Xceed.Silverlight.DataGrid.GroupContext

Requirements

Target Platforms: Windows 7, Windows Vista, Windows XP SP3, Windows Server 2008 family

Reference

GroupContext Members
Xceed.Silverlight.DataGrid Namespace