private static void RefreshFixedHeaderFooter( DataGridControl dataGrid, Panel targetPanel, ObservableCollection<DataTemplate> collection )
{
TableViewScrollViewer tableViewScrollViewer = dataGrid.ScrollViewer as TableViewScrollViewer;
RowSelectorPane rowSelectorPane = ( tableViewScrollViewer != null ) ? tableViewScrollViewer.RowSelectorPane : null;
foreach( HeaderFooterItem element in targetPanel.Children )
{
if( rowSelectorPane != null )
{
rowSelectorPane.FreeRowSelector( element );
}
dataGrid.ClearItemContainer( element, GetFixedItem( element ) );
DataGridControl.SetDataGridContext( element, null );
}
targetPanel.Children.Clear();
DataGridContext dataGridContext = dataGrid.DataGridContext;
foreach( DataTemplate template in collection )
{
HeaderFooterItem control = new HeaderFooterItem();
control.Content = dataGrid.DataContext;
control.ContentTemplate = template;
DataGridControl.SetDataGridContext( control, dataGridContext );
dataGrid.PrepareItemContainer( control, template );
DataGridControl.SetFixedItem( control, template );
GroupLevelIndicatorPane.SetGroupLevel( control, -1 );
targetPanel.Children.Add( control );
}
}
private static void ClearFixedHostPanelHelper( DataGridControl dataGrid, UIElementCollection collection )
{
TableViewScrollViewer tableViewScrollViewer = dataGrid.ScrollViewer as TableViewScrollViewer;
RowSelectorPane rowSelectorPane = ( tableViewScrollViewer != null ) ? tableViewScrollViewer.RowSelectorPane : null;
foreach( DependencyObject headerFooterItem in collection )
{
if( rowSelectorPane != null )
{
rowSelectorPane.FreeRowSelector( headerFooterItem );
}
dataGrid.ClearItemContainer( headerFooterItem, GetFixedItem( headerFooterItem ) );
DataGridControl.SetDataGridContext( headerFooterItem, null );
}
collection.Clear();
}
