AJAX Cascadingdropdown inside Grid Edit

[fred williams]

Is it possible to use the cascading dropdown extender inside of the edit template of the grid? How would I be able to bind the dropdowns with the current record values?

Thanks!

[Veli]

Hello fred,

Yes, this scenario can be implemented by using RadGrid's FormTemplate feature:

<telerik:RadGrid ID="RadGrid1" runat="server">
    <MasterTableView>
        <EditFormSettings EditFormType="Template">
            <FormTemplate>
                <%-- Define your combos here--%>
            </FormTemplate>
        </EditFormSettings>
    </MasterTableView>
</telerik:RadGrid>

Once you define your custom edit form template, you can use the ItemDataBound event to find and bind your cascading combos:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
    {
        GridEditFormItem editForm = (GridEditFormItem)e.Item;
        //use editForm.FindControl() to find your combos and bind here
    }
}

Best,
Veli
the Telerik team

[fred williams]

Hello Veli and thanks for your response:

I know how to find the dropdowns using findcontrol, but how do I bind them once I find them?

[Iana Tsolova]

Hi fred,

Please find the below online resources for more information on how to bind the RadComboBox control:

http://www.telerik.com/help/aspnet-ajax/grdoperationswithdropdownlistinedititemtemplate.html
http://www.telerik.com/help/aspnet-ajax/combo_databindingoverview.html

I hope this helps.

Greetings,
Iana
the Telerik team