Problem with SelectedValue in combobox inside grid

[Vinh]

Hi,

In the EditFormTemplate or default (out-of-the-box) form, when I use the combobox with

SelectedValue

then I got the error but if I remove it then it's fine but then no item is selected.

<telerik:RadComboBox runat="server" ID="RadComboBox2" DataTextField="StateName" DataValueField="ID"
    HighlightTemplatedItems="true" Height="190px" Width="220px" DropDownWidth="420px"
    DataSourceID="sdsStates" SelectedValue='<%#Bind("ID") %>' EnableAutomaticLoadOnDemand="true"
    ItemsPerRequest="10" ShowMoreResultsBox="true" EnableVirtualScrolling="true">
    <HeaderTemplate>
        <ul>
            <li class="col1">State Name</li>
            <li class="col1">Country</li>
        </ul>
    </HeaderTemplate>
    <ItemTemplate>
        <ul>
            <li class="col1"><%# DataBinder.Eval(Container.DataItem, "StateName")%></li>
            <li class="col1"><%# DataBinder.Eval(Container.DataItem, "countryabrv")%></li>
        </ul>
    </ItemTemplate>
</telerik:RadComboBox>

[Mira]

Hello Vinh,

I suggest that you take a look at the following demos in which is shown how to set the selected value of a combo:
User Control Edit Form
Form Template Edit Form
Combo in Grid

If the issue persists, please provide more information on the error you receive and on your scenario.

Best wishes,
Mira
the Telerik team