[Solved] EditItem Template Does not Fire

[Suresh Mishra]

Hi,

I am using an edititem template within a grip and I wired an event handler for OnSelectedIndexChanged.  This even fires for ItemTemplate, but not for EditItem template.  I initially had this only for EditItem tempplate because that's where its needed.

What am I doing wrong?

Thanks.

Suresh

Here's the relevant ASPX snippet:


                                <telerik:GridTemplateColumn   DataField="LaborSchedule" HeaderText="Labor Schedule" UniqueName="LaborSchedule">
                                 <ItemTemplate>
                                        <telerik:RadComboBox DataTextField="Laborschedule"
                                         DataValueField="Laborschedule"
                                            EnableLoadOnDemand="True"
                                            ID="RadComboBoxLaborschedule"
                                            runat="server"
                                            Height="140px"
                                            Width="50px"
                                            SelectedValue = '<%#DataBinder.Eval(Container.DataItem, "LaborShedule")%>'
                                            OnItemsRequested="RadComboBoxLaborschedule_ItemsRequested"
                                            DataSourceID="ObjectDataSourceGetSchedules"
                                            OnSelectedIndexChanged="RadComboBoxLaborschedule_SelectedIndexChanged" >
                                        </telerik:RadComboBox>
                                </ItemTemplate>
                                <ItemStyle Width="300px" />
                                    <EditItemTemplate>
                                        <telerik:RadComboBox DataTextField="Laborschedule"
                                         DataValueField="Laborschedule"
                                            EnableLoadOnDemand="True"
                                            ID="RadComboBoxLaborschedule"
                                            runat="server"
                                            Height="140px"
                                            Width="50px"
                                            SelectedValue = '<%#DataBinder.Eval(Container.DataItem, "LaborShedule")%>'
                                            OnItemsRequested="RadComboBoxLaborschedule_ItemsRequested"
                                            DataSourceID="ObjectDataSourceGetSchedules"
                                            OnSelectedIndexChanged="RadComboBoxLaborschedule_SelectedIndexChanged2" >
                                        </telerik:RadComboBox>
                                    </EditItemTemplate>                                   
                                </telerik:GridTemplateColumn>

[Princy]

Hi Suresh,

Try setting the AutoPostBack property of the RadComboBox in the EditItemTemplate to true and this should fire the OnSelectedIndexChanged event of the combobox.
aspx:

<radG:GridTemplateColumn DataField="LaborSchedule" HeaderText="Labor Schedule" UniqueName="LaborSchedule">
     <EditItemTemplate>
           <telerik:RadComboBox AutoPostBack="true" DataTextField="Laborschedule" DataValueField="Laborschedule" EnableLoadOnDemand="True"
              ID="RadComboBoxLaborschedule" runat="server" Height="140px" Width="50px" SelectedValue='<%#DataBinder.Eval(Container.DataItem, "LaborShedule")%>'
              OnItemsRequested="RadComboBoxLaborschedule_ItemsRequested" DataSourceID="ObjectDataSourceGetSchedules" OnSelectedIndexChanged="RadComboBoxLaborschedule_SelectedIndexChanged2" >
          </telerik:RadComboBox>
     </EditItemTemplate>
</radG:GridTemplateColumn>

Thanks
Princy.

[Paul Wiesinger]

Hi there!

I have the same scenario but a different problem.

Heres my grid:

<telerik:RadGrid ID="dgBookmarks" runat="server" Width="100%">
<MasterTableView AutoGenerateColumns="false">
                                <Columns>
                                    <telerik:GridEditCommandColumn />
                                    <telerik:GridTemplateColumn UniqueName="UG">
                                        <ItemTemplate>
                                            <%# Eval("Chapter") %> / <%# Eval("Titel") %> / <%# Eval("Paragraph") %>
                                        </ItemTemplate>
                                        <EditItemTemplate>
                                            <telerik:RadComboBox ID="ddlChapters" runat="server" AutoPostBack="true"
                                                OnSelectedIndexChanged="ServerAction_ddlChaptersSelectedIndexChanged" />
                                        </EditItemTemplate>
                                    </telerik:GridTemplateColumn>
                                </Columns>
                            </MasterTableView>
                        </telerik:RadGrid>

and my code behind:

protected void dgBookmarks_NeedDataSource(object source, GridNeedDataSourceEventArgs e)
        {
            dgBookmarks.DataSource = Chapter.Bookmarks.ToArray(typeof(Bookmark));
        }

        protected void dgBookmarks_ItemDataBound(object sender, GridItemEventArgs e)
        {
            if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
            {
                GridEditFormItem editFormItem = (GridEditFormItem)e.Item;
                RadComboBox ddlChapters = (RadComboBox)editFormItem["UG"].FindControl("ddlChapters");

                ddlChapters.DataSource = GetAvailableChapters(Chapter.Year);
                ddlChapters.DataBind();
            }
        }

        protected void ServerAction_ddlChaptersSelectedIndexChanged(object sender, EventArgs e)
        {
            //everythings fine here...
        }

problem is:

In the Telerik.Web.UI.RadCompositeDataBoundControl.OnPreRender(EventArgs e) method there is a NullReferenceException (see Screenshot.png).

I guess this is not default-behaviour? There aren't any other RadControls on the page. I do not use a master page.

Yours, Paul

[Martin]

Hello Paul,

I built sample project based on your code that runs as expected on my side. Please give it a try and let us know how it goes.

Regards,
Martin
the Telerik team

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[Paul Wiesinger]

Hello,

i'm not sure what the problem was, but it solved itself :-) If i discover the reason, i'll let you know.

Thanks,
Paul