SourceCollection Property (DataGridCollectionView)

Visual Basic
C#

'Declaration
 
Public Overrides NotOverridable ReadOnly Property SourceCollection As IEnumerable

'Usage
 
Dim instance As DataGridCollectionView

Dim value As IEnumerable

 

value = instance.SourceCollection

public override IEnumerable SourceCollection {get;}

Property Value

An IEnumerable object that represents the underlying collection.

All examples in this topic assume that the grid is bound to the Orders table of the Northwind database, unless stated otherwise.

The following example demonstrates how to delete the selected items from the underlying data view when the delete key is pressed via the PreviewKeyDown event.

XAML

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">

  <Grid.Resources>

    <xcdg:DataGridCollectionViewSource x:Key="cvs_orders"

                                    Source="{Binding Source={x:Static Application.Current},

                                                      Path=Orders}"/>       

        

  </Grid.Resources>



 <xcdg:DataGridControl x:Name="OrdersGrid"

                       ItemsSource="{Binding Source={StaticResource cvs_orders}}"

                       PreviewKeyDown="DeleteSelectedRows">

 </xcdg:DataGridControl>

</Grid>

Visual Basic

Private Sub DeleteSelectedRows(ByVal sender As Object, ByVal e As KeyEventArgs)

  Dim grid As DataGridControl = TryCast( sender, DataGridControl )

  If Not grid Is Nothing Then

    If e.Key = Key.Delete Then

      If grid.SelectedItems.Count > 0 Then

        ' we keep a copy of the selected items because once the first item is deleted,

        ' the selected items are reset to 0.

        Dim items As ArrayList = New ArrayList( grid.SelectedItems )

        Dim dataView As DataView = TryCast( ( CType( grid.ItemsSource, _

                       DataGridCollectionView ) ).SourceCollection, DataView )

        For i As Integer = items.Count - 1 To 0 Step -1

          dataView.Table.Rows.Remove( CType( items( i ), System.Data.DataRow ) )

        Next i

        grid.CurrentItem = grid.Items( 0 )

      End If

    End If

  End If

End Sub

C#

Private void DeleteSelectedRows( Object sender, KeyEventArgs e )

{

 DataGridControl grid = sender As DataGridControl;      

 If( grid != null )

 {

   If( e.Key == Key.Delete )

   {

     If( grid.SelectedItems.Count > 0 )

     {

       // we keep a copy of the selected items because once the first item Is deleted,

       // the selected items are reset To 0 And the source may be automatically modified To

       // reflect the New items.

       ArrayList items = New ArrayList( grid.SelectedItems );

       DataView dataView = ( ( DataGridCollectionView )grid.ItemsSource ).SourceCollection As DataView;

       For( int i = items.Count - 1; i >= 0; i-- )

       {

         dataView.Table.Rows.Remove( ( System.Data.DataRow )items[ i ] );

       }

       grid.CurrentItem = grid.Items[ 0 ];

     }

   }

 }

}

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

DataGridCollectionView Class
DataGridCollectionView Members
Base Implementation in SourceCollection