ASPxGridView.Selection Property

Gets an object that allows you to access row selection methods.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v23.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public GridViewSelection Selection { get; }

VB.NET

Public ReadOnly Property Selection As GridViewSelection

Property Value

Type	Description
GridViewSelection	An object that contains row selection methods.

Remarks

The Selection property returns the GridViewSelection object. It contains methods that allow you to select or deselect data rows, and get information about the current row selection state.

When the row selection changes, the control raises the client-side ClientGridView.SelectionChanged or the server-side ASPxGridBase.SelectionChanged event (based on the ProcessSelectionChangedOnServer property value).

For more information on row selection in the grid, refer to the following topic: Selection.

ASPX

<dx:ASPxGridView ID="gridview" ClientInstanceName="grid" runat="server" AutoGenerateColumns="False"
    KeyFieldName="ProductID" OnCustomCallback="gridview_CustomCallback">
    <Columns>
        <dx:GridViewCommandColumn ShowSelectCheckbox="true" VisibleIndex="0" />
        <%--...--%>
    </Columns>
</dx:ASPxGridView>
<br />
<dx:ASPxButton ID="ASPxButton1" runat="server" Text="Invert selection state" AutoPostBack="false">
    <ClientSideEvents Click="onButtonClick" />
</dx:ASPxButton>

JS

function onButtonClick(s, e) {
    grid.PerformCallback();
}

C#

protected void gridview_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {
    var grid = sender as ASPxGridView;
    var visibleIndex = 0;
    if(grid.Selection.IsRowSelected(visibleIndex)) {
        grid.Selection.UnselectRow(visibleIndex);
    } else {
        grid.Selection.SelectRow(visibleIndex);
    }
}

VB.NET

Protected Sub gridview_CustomCallback(ByVal sender As Object, ByVal e As ASPxGridViewCustomCallbackEventArgs)
    Dim grid = TryCast(sender, ASPxGridView)
    Dim visibleIndex = 0

    If grid.Selection.IsRowSelected(visibleIndex) Then
        grid.Selection.UnselectRow(visibleIndex)
    Else
        grid.Selection.SelectRow(visibleIndex)
    End If
End Sub