Retrieving Child Contexts

The following example demonstrates how to retrieve the child contexts of the master data items and collapse any expanded details using the CollapseDetail method.

XAML

  <Grid>
    <Grid.Resources>
      <xcdg:DataGridCollectionViewSource x:Key="cvs_employees"
                                          Source="{Binding Source={x:Static Application.Current},
                                                          Path=Employees}"/>
  
    </Grid.Resources>
  
    <DockPanel>
      <Button Content="Collapse All Details"
              Click="Button_Click"
              DockPanel.Dock="Top"/>
      <xcdg:DataGridControl x:Name="EmployeesGrid"
                            ItemsSource="{Binding Source={StaticResource cvs_employees}}"
                            ItemsSourceName="Order Information"
                            AutoCreateDetailConfigurations="True"/>
    </DockPanel>
  </Grid>

C#

private void Button_Click( object sender, RoutedEventArgs e )
{
  List<DataGridContext> childContexts = new List<DataGridContext>( this.EmployeesGrid.GetChildContexts() );
  foreach( DataGridContext context in childContexts )
  {
    context.ParentDataGridContext.CollapseDetails( context.ParentItem );
  }     
}

VB.NET

Private Sub Button_Click( ByVal sender As Object, ByVal e As RoutedEventArgs )
  Dim childContexts As New List( Of DataGridContext)( Me.EmployeesGrid.GetChildContexts() )
  Dim context As DataGridContext
  For Each context In childContexts
    context.ParentDataGridContext.CollapseDetails( context.ParentItem )
  Next context
End Sub