RadGrid - SelectedItems.Count = 0 in ItemCommand

[Nicolas]

Hi,

I want to delete selected item but in a particular way.
So, I created CommandItemTemplate with some Linbutton, especially DeleteButton with custom Command "DeleteSelected".

On my grid I had property to allow client select row:

<ClientSettings>

<Selecting AllowRowSelect="True" />
</ClientSettings>

I use event "ItemCommand" from serverside and it's correctly fired. But in this event, RadGrid.SelectedItems.Count is always 0.

if (e.CommandName == "DeleteSelected")
{
               if (RadGrid.SelectedItems.Count > 0)
               {
                    //Always 0
               }
}

Where am I wrong ?

[Nicolas]

Just found the solution: I replaced my LinqDataSource by using event NeedDatasource from RadGrid.
Now it's working. But the question is why ?

[Princy]

Hi Nicolas,

I was not able to replicate this behavior at my end. Below is a sample code snippet that I tried, how does it differ from yours, please provide your full code snippet for further help.

ASPX:

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
</telerik:RadScriptManager>
<telerik:RadGrid ID="RadGrid1" runat="server" DataSourceID="LinqDataSource1" AllowPaging="true" AllowMultiRowSelection="true" OnItemCommand="RadGrid1_ItemCommand">
    <MasterTableView DataKeyNames="OrderID" CommandItemDisplay="Top">
        <CommandItemTemplate>
            <asp:LinkButton ID="LinkButton1" runat="server" CommandName="DeleteSelected">Delete selected</asp:LinkButton>
        </CommandItemTemplate>
    </MasterTableView>
    <ClientSettings>
        <Selecting AllowRowSelect="True" />
    </ClientSettings>
</telerik:RadGrid>
<asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="OrdersDataContext"
    EntityTypeName="" Select="new (OrderID, CustomerID, ShipName, ShipCity)" TableName="Orders">
</asp:LinqDataSource>

C#:

protected void RadGrid1_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e)
{
  if (e.CommandName == "DeleteSelected")
  {
    if (RadGrid1.SelectedItems.Count > 0)
    {
      //Code to delete
    }
  }
}

Thanks,
Princy

[Nicolas]

Hi Princy,

Sorry for the delay.
I use the event "Selecting" of LinqDataSource and give list to e.Result like this:

public void OnSelecting(object sender, LinqDataSourceSelectEventArgs e)
{
       List<Foo> datas = new  List<Foo>();
       //Code to get objects
       e.Result = datas;
}

[Marin]

Hello,

I'm attaching a sample working page showing the correct number of selected item's in the ItemCommand event of the grid when using the OnSelecting event of the LinqDataSource control.
You can check the configuration there and see if there's anything different in your case.

Regards,
Marin
Telerik