Grid View for ASP.NET Web Forms - How to Delete Selected Rows in a Grid

The example shows how to delete the selected rows of an ASPxGridView that is bound to an in-memory DataSource.

Use the client-side PerformCallback method to send custom callbacks to the server when a user clicks the Delete button.

function OnClickButtonDel(s, e) {
    grid.PerformCallback('Delete');
}
...
<dx:ASPxButton ID="buttonDel" AutoPostBack="false" 
               runat="server" Text="Delete">
    <ClientSideEvents Click="OnClickButtonDel"/>
</dx:ASPxButton>

On the server, the PerformCallback method raises the CustomCallback event.

In the CustomCallback event handler, call the GetSelectedFieldValues method to obtain the selected rows. Then, call the Remove method for each selected row.

protected void gridView_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {
    if(e.Parameters == "Delete") {
        table = GetTable();
        List<Object> selectItems = grid.GetSelectedFieldValues("ID");
        foreach(object selectItemId in selectItems) {
            table.Rows.Remove(table.Rows.Find(selectItemId));
        }
        grid.DataBind();
        grid.Selection.UnselectAll();
    }
}

Files to Look At

• Default.aspx (VB: Default.aspx)
• Default.aspx.cs (VB: Default.aspx.vb)

Documentation

• ASPxGridView
• Grid View - Add and Edit Records
• Grid View - Delete Records
• Grid View - Examples

More Examples

• How to Move Selected Rows From the ASPxGridView Into Another ASPxGridView
• How to Edit an In-Memory Dataset

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