Datagrid : Is there no Sorted event?
I've taken an example from MSDN documentation and adjusted it to raise a Sorted event when the Sorting event is done.
public class CustomDataGrid : DataGrid
{
// Create a custom routed event by first registering a RoutedEventID
// This event uses the bubbling routing strategy
public static readonly RoutedEvent SortedEvent = EventManager.RegisterRoutedEvent(
"Sorted", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(CustomDataGrid));
// Provide CLR accessors for the event
public event RoutedEventHandler Sorted
{
add { AddHandler(SortedEvent, value); }
remove { RemoveHandler(SortedEvent, value); }
}
// This method raises the Sorted event
void RaiseSortedEvent()
{
RoutedEventArgs newEventArgs = new RoutedEventArgs(CustomDataGrid.SortedEvent);
RaiseEvent(newEventArgs);
}
protected override void OnSorting(DataGridSortingEventArgs eventArgs)
{
base.OnSorting(eventArgs);
RaiseSortedEvent();
}
}
Then you can use it either in codebehind.
datagrid.Sorted += new RoutedEventHandler(datagrid_Sorted);
or in XAML
<local:CustomDataGrid x:Name="datagrid" Sorted="datagrid_Sorted"/>
And here the method that will get triggered when the datagrid finishing sorting:
private void datagrid_Sorted(object sender, RoutedEventArgs args)
{
var datagrid = (CustomDataGrid)sender;
var sortedItems = datagrid.Items;
}
datagrid has "Sorting" event, subscribe to it!
XAML:
<DataGrid ItemsSource="{Binding YourItems}" AutoGenerateColumns="True" anUserSortColumns="True"
Sorting="DataGrid_Sorting"/>
.cs code:
private void DataGrid_Sorting(object sender, System.Windows.Controls.DataGridSortingEventArgs e)
{
Console.WriteLine(string.Format("sorting grid by '{0}' column in {1} order", e.Column.SortMemberPath, e.Column.SortDirection));
}
You can still subscribe to the DataGrid Sorting Event:
<local:CustomDataGrid x:Name="datagrid" Sorting="datagrid_Sorted;"/>
but to make sure that your actions happen after the sorting is done use Dispatcher :
private void DataGrid_Sorting(object sender, DataGridSortingEventArgs e)
{
this.Dispatcher.BeginInvoke((Action)delegate()
{
//runs after sorting is done
}, null);
}
This way, there's no need of a custom Datagrid class.