Javascript Error when placed in RadGrid

[Justin McMillen]

I get the following error when I place a RadListBox inside the edit template of a RadGrid and ajaxify them with the RadAjaxManagerProxy:

 Microsoft JScript runtime error: 'Telerik.Web.UI.RadListBox' is null or not an object

Here's a sample of code

<telerik:RadAjaxManagerProxy ID="RadAjaxProxy1" runat="server">

    <AjaxSettings>

        <telerik:AjaxSetting AjaxControlID="updatePanel">           

            <UpdatedControls>

                <telerik:AjaxUpdatedControl ControlID="updatePanel"
                       LoadingPanelID="RadAjaxLoadingPanel2" /> 

                <telerik:AjaxUpdatedControl ControlID="RadGrid1" />          

            </UpdatedControls>

        </telerik:AjaxSetting>       

    </AjaxSettings>

</telerik:RadAjaxManagerProxy>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel2" runat="server" Skin="Default" />

 

<asp:Panel ID="updatePanel" runat="server">

 

<telerik:RadGrid ID="RadGrid1" runat="server" DataSourceID="myDataSource" AllowAutomaticInserts="false"

     AllowAutomaticUpdates="false" AllowPaging="true" PageSize="50"

     AllowAutomaticDeletes="true" onitemcommand="RadGrid1_ItemCommand"

        oninsertcommand="RadGrid1_InsertCommand"

        onupdatecommand="RadGrid1_UpdateCommand">

        <MasterTableView AutoGenerateColumns="False" DataSourceID="myDataSource"

        HeaderStyle-HorizontalAlign="Center" CommandItemDisplay="Top">

            <Columns>

                <telerik:GridEditCommandColumn ButtonType="ImageButton" EditText="Edit" />

                <telerik:GridBoundColumn DataField="Field1" HeaderText="Field1"

                    ItemStyle-HorizontalAlign="Center" ReadOnly="true" >

                </telerik:GridBoundColumn>

            </Columns>

            <EditFormSettings EditFormType="Template">

             <FormTemplate>

              <div>

              <table>

              <tr>

              <td>

              <asp:TextBox ID="txtField1" runat="server" Text='<%# Bind("Field1") %>' />

              </td>

              <td valign="top">                                   

             <telerik:RadListBox ID="lstBox1" runat="server"
                              DataSourceID="listboxDataSource"                              DataTextField="TextField" DataValueField="ValueField" Height="200px" Width="400px"

              CheckBoxes="true" />                                

             </td>

              </tr>

              </table>                      

                <div class="commandLinksDiv">

                 <asp:LinkButton ID="lnkBtnUpdate" runat="server"

    CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>'

                 CssClass="commandLinks" ValidationGroup="vldEditForm">

                    <img src="../../Styles/images/Update.gif" alt="" />

                      <span><%# (Container is GridEditFormInsertItem) ? "Insert" : "Update" %></span>

                 </asp:LinkButton>

                 <asp:LinkButton ID="lnkBtnCancel" runat="server" CausesValidation="false"

                     CommandName="Cancel" CssClass="commandLinks" Text="Cancel">

                  <img src="../../Styles/images/Cancel.gif" alt="" />

                  <span>Cancel</span>

                  </asp:LinkButton>

                 </div>

                </div>

             </FormTemplate>

                <EditColumn ButtonType="ImageButton" CancelText="Cancel" InsertText="Insert"

                    UniqueName="EditCommandColumn1" UpdateText="Update">

                </EditColumn>

            </EditFormSettings>

        </MasterTableView>

    </telerik:RadGrid>

</asp:Panel>

I get the error when I am debugging from Visual Studio and go into edit or insert mode.  Has anyone had this problem or know how to fix it?

[Helen]

Hi,

We tried to reproduce the problem you described, but without much success. Please see our test project attached.
What is the difference in your case? Could you modify our project so that we can observe the error?

Kind regards,
Helen
the Telerik team