There is no assigned datasource. Unable to complete the callback request

[Fred Mare]

Hi

I am using a GridDropDownColumn with AllowAutomaticLoadOnDemand enabled in a radgrid that is using the

NeedDataSource event to bind to my datset. As soon as try to use the dropdown I receive the following error

"There is no assigned datasource. Unable to complete the callback request"

Here is my GridDropDownColumn

Thank you
 Fred

<telerik:GridDropDownColumn UniqueName="Account" DataField="accountCode" DropDownControlType="RadComboBox"
                               HeaderText="Account" DataSourceID="AccountDataSource" HeaderStyle-Width="150px"
                               ListTextField="name" ListValueField="code" EnableEmptyListItem="true"
                               AllowAutomaticLoadOnDemand="true" ShowMoreResultsBox="true" ItemsPerRequest="10"
                               AllowVirtualScrolling="true">
                           </telerik:GridDropDownColumn>

[Pavlina]

Hi Fred,

Please examine the following forum thread which elaborates on this matter and let me know if it helps:
http://www.telerik.com/community/forums/aspnet-ajax/grid/griddropdowncolumn-doesn-t-work-as-expected.aspx

Kind regards,
Pavlina
the Telerik team