DataGrid.SelectedCellsChanged Evento

Definizione

Spazio dei nomi:

System.Windows.Controls

Assembly:

PresentationFramework.dll

Si verifica quando l'insieme SelectedCells viene modificato.

public:
 event System::Windows::Controls::SelectedCellsChangedEventHandler ^ SelectedCellsChanged;

public event System.Windows.Controls.SelectedCellsChangedEventHandler SelectedCellsChanged;

member this.SelectedCellsChanged : System.Windows.Controls.SelectedCellsChangedEventHandler 

Public Custom Event SelectedCellsChanged As SelectedCellsChangedEventHandler 

Tipo evento

SelectedCellsChangedEventHandler

Esempio

Nell'esempio seguente viene illustrato come gestire l'evento SelectedCellsChanged e cancellare i valori nelle celle appena selezionate.

<Grid>
    <DataGrid Name="DG1" ItemsSource="{Binding}" SelectionUnit="CellOrRowHeader" SelectionChanged="DG1_SelectionChanged" SelectedCellsChanged="DG1_SelectedCellsChanged" />
</Grid>

private void DG1_SelectedCellsChanged(object sender, SelectedCellsChangedEventArgs e)
{
    //Get the newly selected cells
    IList<DataGridCellInfo> selectedcells = e.AddedCells;

    //Get the value of each newly selected cell
    foreach (DataGridCellInfo di in selectedcells)
    {
        //Cast the DataGridCellInfo.Item to the source object type
        //In this case the ItemsSource is a DataTable and individual items are DataRows
        DataRowView dvr = (DataRowView)di.Item;

        //Clear values for all newly selected cells
        AdventureWorksLT2008DataSet.CustomerRow cr = (AdventureWorksLT2008DataSet.CustomerRow)dvr.Row;
        cr.BeginEdit();
        cr.SetField(di.Column.DisplayIndex, "");
        cr.EndEdit();
    }
}

Private Sub DG1_SelectedCellsChanged(sender As Object, e As SelectedCellsChangedEventArgs)
    'Get the newly selected cells
    Dim selectedcells As IList(Of DataGridCellInfo) = e.AddedCells

    'Get the value of each newly selected cell
    For Each di As DataGridCellInfo In selectedcells
        'Cast the DataGridCellInfo.Item to the source object type
        'In this case the ItemsSource is a DataTable and individual items are DataRows
        Dim dvr As DataRowView = DirectCast(di.Item, DataRowView)

        'Clear values for all newly selected cells
        Dim cr As AdventureWorksLT2008DataSet.CustomerRow = DirectCast(dvr.Row, AdventureWorksLT2008DataSet.CustomerRow)
        cr.BeginEdit()
        cr.SetField(di.Column.DisplayIndex, "")

        cr.EndEdit()
    Next
End Sub

Commenti

È possibile gestire l'evento SelectedCellsChanged da notificare quando viene modificata la raccolta di celle selezionate. Se la selezione include righe complete, viene generato anche l'evento Selector.SelectionChanged .

È possibile recuperare e AddedCellsRemovedCells dal SelectedCellsChangedEventArgs gestore eventi.

Vedi anche

• SelectedCells
• Selected
• SelectionChanged
• Selected