[Solved] Setting the controlparameter of a ListBox which points to same RadGrid where the Listbox is used

[N S]

I'm having trouble with the controlparameter of a ListBox which points to same RadGrid where the Listbox is used.

I want to populate the Listbox depending on the selected value of the Grid, so I've set a controlparameter in the datasource of the ListBox which points to the selectedItem of the Grid. However, the controlparameter always gets the default value. If I set the controlparameter to another grid (not the grid which is the parent of the ListBox) it works fine.

<GRID id=g1 Datasource = DS1>
    <VIEW>
    <EDIT>
        <LISTBOX Datasource=DS2></LISTBOX>
      </EDIT>
</GRID>

<DS1>
    ...
</DS1>

<DS2>
    <selectparameters>
        <asp:ControlParameter ControlID="g1" DefaultValue="0" Name="id" PropertyName="SelectedValue" Type="Int32" />
    </selectparameters>
</ds2>

[Yavor]

Hello N S,

Thank you for contacting us and for your question.
You can employ a setup close to the one shown in this example:

http://demos.telerik.com/aspnet-ajax/grid/examples/programming/selectedvalue/defaultcs.aspx

You can also allow the postback on row click, to make sure the page posts back, and the listview is properly updated.
Give this option a try and let me know how it goes and if any other questions arise.

All the best,
Yavor
the Telerik team

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