[Solved] Authentication Forms and EnableLoadOnDemand =True

[EDEL]

Hi
I use forms authentication and I have a RadComboBox that has EnableLoadOnDemand property set true and NO ExternalCallbackPage set.

When I try to use the ComboBox, this error occurs:
"RadComboBox: load on demand callback error. Press enter for more information"

The authentication timeout is set to 90 and that time has not expired yet.

Can u help me ? :)

[Rosi]

Hello EDEL,

We need some  more information in order to provide you with instructions.
What is the version of the control which you use? Is it RadComboBox "Classic" or RadComboBox for ASP.NET AJAX(part of Telerik.Web.UI) suite?

If you use RadComboBox "Classic" I suggest you associate RadComboBox with the ExternalCallBackPage.

You can do this by the following way:
<radc:radcombobox id="BuyerComboBox" runat="server" EnableLoadOnDemand="True" ShowMoreResultsBox="True"
Width="250px" Skin="WindowsXP" ExternalCallBackPage="RadComboBoxExternalCallBackPage.aspx" ></radc:radcombobox>

Also I suggest you set EnableLoadOnDemand property to true of all RadComboBoxes in RadComboBoxExternalCallBackPage.aspx.
 
An example how ExternalCallBackPage can be used you can see here -http://www.telerik.com/help/aspnet/combobox/comboLoadOnDemandExternal.html


If this does not help you, please open a support ticket and send us sample running project illustrating the problem to test it locally.

Best wishes,
Rosi
the Telerik team

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