Setting Selected Value Programically on Multiple RadComboBoxes and getting an ERROR when Submitting

[Brandon]

I am trying to click a submit button after loading and pre-populating and pre-selecting a value of two radcomboboxes.

If I try it with this code: (the setting for the second radcombobox is: EnableAutomaticLoadOnDemand="True" )

<tr>
                    <td colspan="2"> <b> Supervisor Name </b></td>
                    <td colspan="3">
                        <asp:HiddenField ID="CRAFT_CODE_Textbox" runat="server" value="H" />
                        <asp:HiddenField ID="SUPV_ID_TextBox" runat="server" />
                        <br />
                        <telerik:RadComboBox ID="wcOfficerName" Runat="server"
                            DataSourceID="sdsOfficer" DataTextField="FULL_NAME"
                            DataValueField="SUPV_ID" EnableAutomaticLoadOnDemand="False"
                            EnableItemCaching="True" EnableLoadOnDemand="False"
                            EnableVirtualScrolling="False" Filter="StartsWith" ItemsPerRequest="-1"
                            MarkFirstMatch="False" Width="279px" ShowMoreResultsBox="False"
                            Skin="Office2007" LoadingMessage="Loading Please Wait..." EmptyMessage="Please Select Supervisor">
                        </telerik:RadComboBox>
                    </td>
                    </tr>
                    <tr>
                    <td colspan="2"> <b> Employee Name</b></td>
                    <td colspan="3">
                        <asp:HiddenField ID="EMPL_ID_TextBox" runat="server" />
                        <br />
                        <telerik:RadComboBox ID="wcEmployeeName" Runat="server"
                            DataSourceID="sdsEmployees" DataTextField="FULL_NAME"
                            DataValueField="PERSON_ID" EnableAutomaticLoadOnDemand="True"
                            EnableItemCaching="True" EnableLoadOnDemand="False"
                            EnableVirtualScrolling="False" Filter="StartsWith" ItemsPerRequest="-1"
                            MarkFirstMatch="False" Width="279px" ShowMoreResultsBox="False"
                            Skin="Office2007" LoadingMessage="Loading Please Wait..." EmptyMessage="Please Select Employee">
                        </telerik:RadComboBox>
                       <br />
                    </td>
                </tr>

It works.

However if I change the second radcombobox setting to EnableAutomaticLoadOnDemand="False"  then it errors out when I click the "submit" button.

For the error please see attached "error.jpg"

To set the selectedvalue of each rad box I use the following code in the page load event:

Me.wcEmployeeName.SelectedValue = dataset.Tables(0).Rows(0)(4)
 Me.wcOfficerName.SelectedValue = dataset.Tables(0).Rows(0)(3)

Please help!

[Simon]

Hello Brandon,

The code and the screenshot do not provide enough information to determine the cause of the error.

Could you provide a live URL and/or the complete code-behind of your page?

Greetings,
Simon
the Telerik team