Find Control Edit Template

[William]

I have a TreeList with an Edit Form Template. How do I go about finding those controls when the edit form is opened? With the RadGrid I could find these controls by using the ItemDataBound event and checking if the item is in edit mode. Is there a similar way to do this with the TreeList control?

Thanks.

[Shinu]

Hello Wiliam,

Try the following code.
C#:

protected void RadTreeList1_ItemDataBound(object sender, TreeListItemDataBoundEventArgs e)
{
 if (e.Item is TreeListEditableItem && (e.Item as TreeListEditableItem).IsInEditMode)
 {
    TreeListEditableItem item = (TreeListEditableItem)e.Item;
    Label lbl = (Label)item.FindControl("Label1");
 }
}

-Shinu.

[William]

I'm getting a NullReferenceException, it can't seem to find the control. Below is a code snippet:

ASPX

<telerik:RadTreeList ID="notificationsTree" runat="server" AutoGenerateColumns="false" AllowSorting="false" AllowPaging="false" OnNeedDataSource="notifications_needdata" DataKeyNames="ID" ParentDataKeyNames="PID" ShowTreeLines="false" EditMode="PopUp" OnLoad="notifications_OnLoad" OnItemDataBound="notificationTree_ItemDataBound">
           <Columns>
               <telerik:TreeListEditCommandColumn ShowEditButton="false" AddRecordText="Add"/>
               <telerik:TreeListBoundColumn HeaderText="ID" DataField="ID" UniqueName="ID" Visible="false" />
               <telerik:TreeListBoundColumn HeaderText="PID" DataField="PID" UniqueName="PID" Visible="false" />
               <telerik:TreeListBoundColumn HeaderText="Name" DataField="Name" />
               <telerik:TreeListBoundColumn HeaderText="Item" DataField="ItemsID" />
               <telerik:TreeListBoundColumn HeaderText="Category" DataField="Category" />
               <telerik:TreeListBoundColumn HeaderText="Location" DataField="Location" />
               <telerik:TreeListEditCommandColumn ShowAddButton="false"  />
           </Columns>
           <EditFormSettings EditFormType="Template" PopUpSettings-Modal="true" InsertCaption="Add Notification" PopUpSettings-Height="200px" PopUpSettings-Width="520px">
               <FormTemplate>
                   <table>
                       <tr>
                           <td>Name:</td>
                           <td><telerik:RadTextBox ID="editName" runat="server" EmptyMessage="Enter Name" /></td>
                           <td>Category:</td>
                           <td><telerik:RadComboBox ID="editCategory" runat="server" EmptyMessage="Type a Category" MarkFirstMatch="true" /></td>
                       </tr>
                       <tr>
                           <td>Item:</td>
                           <td><telerik:RadComboBox ID="editItem" runat="server" EmptyMessage="Type a PS#" MarkFirstMatch="true" /></td>
                           <td>Location:</td>
                           <td><asp:DropDownList ID="editLocation" runat="server" /></td>
                       </tr>
                       <tr>
                           <td>Repeat Interval:</td>
                           <td><telerik:RadTextBox ID="editInterval" runat="server" /></td>
                           <td>Max Repeat:</td>
                           <td><telerik:RadTextBox ID="editRepeat" runat="server" /></td>
                       </tr>
                       <tr>
                           <td>Send On Weekends:</td>
                           <td><asp:CheckBox ID="editWeekends" runat="server" /></td>
                           <td>Send On Holidays:</td>
                           <td><asp:CheckBox ID="editHolidays" runat="server" /></td>
                       </tr>
                       <tr>
                           <td colspan="4"><telerik:RadButton ID="editSubmit" runat="server" Text="Submit" /></td>
                       </tr>
                   </table>
               </FormTemplate>
           </EditFormSettings>

       </telerik:RadTreeList>

C#

protected void notificationTree_ItemDataBound(object sender, TreeListItemDataBoundEventArgs e)
        {
            if (e.Item is TreeListEditableItem && (e.Item as TreeListEditableItem).IsInEditMode)
            {
                TreeListEditableItem item = (TreeListEditableItem)e.Item;
                RadTextBox txt = (RadTextBox)item.FindControl("editName");

                txt.Text = "Test22";
            }
        }

[William]

Fixed the issue by adding the following line to the IF statement check:

(e.Item.ItemType == TreeListItemType.EditFormItem)