RadTreeList with RadGrid in Master/Detail with usercontrols not working?

[Gerhard]

I have two usercontrols.
usercontrol1 uses a treeview, usercontrol2 uses a grid.
usercontrol2 should show the details of the selected item of usercontrol2

I hope to achieve this by setting the ControlParameter of the Datasource of usercontrol2

 <asp:SqlDataSource ID="SqlDataSource1" runat="server"
        ConnectionString="<%$ ConnectionStrings:Paket %>"
        SelectCommand="SELECT * FROM [tLog] WHERE pPaketID=@pPaketID">
        <SelectParameters>
<asp:ControlParameter ControlID="ctl00$MainContent$PaketListe1$RadTreeList1" Type="Int64" Name="pPaketID" DefaultValue="0" PropertyName="SelectedValue" />
        </SelectParameters>
        </asp:SqlDataSource>

I get an error, stating that

DataBinding: Telerik.Web.UI.RadTreeList does not contain a property with the name 'SelectedValue'.

Have I done the wrong thing, made a stupid mistake or am I wanting the impossible?

thx

Gerhard

[Tsvetina]

Hello Gerhard,

RadTreeList indeed does not have a SelectedValue property, so you would need a different approach. Having in mind the two controls are in different user controls a server-side approach would rather be needed.
 
You could make the treelist postback on item click RadTreeList1.ClientSettings.AllowPostBackOnItemClick = "true" and in the ItemCommand event save the clicked row value in Session. Clear this value on each Page_Load event of this same user control.
Then, in the PreRender event of the other user control check if there is such value and if so, modify the select parameter of the datasource control accordingly.
Finally, call Rebind() for the grid.

Kind regards,
Tsvetina
the Telerik team

[Gerhard]

Hi Tsvetina,

thanks a lot, that did the trick.
br
Gerhard

[Gopi]

Hello Gerhard,

You could make the treelist postback on item click
RadTreeList1.ClientSettings.AllowPostBackOnItemClick = "true" as posted by Tsvetina and in the
ItemCommand event to retrive the value of selected column u can make use of code like this................

TreeListDataItem dataItem = e.Item as TreeListDataItem;
            RadTreeList1.ClientSettings.AllowPostBackOnItemClick = true;
            TableCell cell = dataItem["ColumnName"];
            string value = cell.Text;