DataBinding: 'Telerik.Web.UI.TreeListInsertionObject' does not contain a property with the name ""

[Sayantan]

Hi friends,I have Telerik Treelist control which works perfectly when I use EditFormType="AutoGenerated"
but when I use EditFormType="Template" with a customized template my template for insertion is not showing when I click in the Add(+) image.The template for edit works fine.
When I use breakpoint in the RadTreeList1_ChildItemsDataBind event I found this error.
I have a textbox and checkbox in the template.
The aspcheckbox is creating the problem.I tried with the following solution of using RadTreeList1_ItemCommand()
System.Collections.Specialized.ListDictionary newValues = new System.Collections.Specialized.ListDictionary();
    newValues["AccountName"] = string.empty
    newValues["IsDirect"] = true;
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
but it does'nt work.
I am posting my code sniplet below:
<telerik:RadTreeList ID="RadTreeList1" runat="server"
            AutoGenerateColumns="false" DataKeyNames="AccountId"
        AllowLoadOnDemand="True"  EditMode="EditForms"
            onchilditemsdatabind="RadTreeList1_ChildItemsDataBind"
            onneeddatasource="RadTreeList1_NeedDataSource" AllowPaging="True" AllowSorting="True"           
            ParentDataKeyNames="PAccountId" Skin="Web20"
            oninsertcommand="RadTreeList1_InsertCommand"       
            >
<Columns>
               <telerik:TreeListEditCommandColumn UniqueName="InsertCommandColumn" ButtonType="ImageButton"
                HeaderStyle-Width="50px" ItemStyle-HorizontalAlign="Center">
            </telerik:TreeListEditCommandColumn>
               <telerik:TreeListButtonColumn UniqueName="DeleteCommandColumn" Text="Delete" CommandName="Delete"
                ButtonType="ImageButton" HeaderStyle-Width="20px">
            </telerik:TreeListButtonColumn>
                <telerik:TreeListBoundColumn DataField="AccountId" HeaderText="ActId" ReadOnly="true"
                    UniqueName="AccountId"  HeaderStyle-Width="30px" ForceExtractValue="Always">                    
                </telerik:TreeListBoundColumn>
                 <telerik:TreeListBoundColumn DataField="PAccountId" HeaderText="PActId" ReadOnly="true"
                    MaxWidth="" MinWidth="" UniqueName="PAccountId"  HeaderStyle-Width="30px" ForceExtractValue="Always">                    
                </telerik:TreeListBoundColumn>
                <telerik:TreeListBoundColumn DataField="AccountName" HeaderText="Account Name"  
                    HeaderStyle-Width="180px" UniqueName="ActName">
                </telerik:TreeListBoundColumn>
 </Columns>
            
            <EditFormSettings EditFormType="Template">
                <FormTemplate>
                <table class="modalBox" style="width:500px">
                 <tr>
                        <td style="height:10px"></td>
                    </tr>
                    <tr>
                        <td>
                            <table>
                                <tr>
                                <td align="left"><asp:Label ID="lblAccountName" runat="server" Text="Account Name" CssClass="Main_LabelText" Width="120px"></asp:Label>
                                </td>
                                <td align="left">
                               <asp:TextBox ID="txtAccountName" runat="server" Text='<%# Eval("AccountName") %>'   CssClass="TextBoxSmall"></asp:TextBox>
                             </td>
                                </tr>
                                <tr>
                                    <td style="height:10px"></td>
                                </tr>
                            </table>
                        </td>
                    </tr>
 <tr>
                                    <td>                                  
                                        <asp:CheckBox ID="chkIsDirect" CssClass="chkbxSmall" Width="100px" runat="server" Text="IsDirect" TextAlign="Left" Checked='<%# Bind("IsDirect") %>' />
                                        
                                    </td>
                                </tr>
                            </table>
 <tr>
                        <td>
                            <table>
                                <tr>
                                    <td style="height:10px"></td>
                                </tr>
                                <tr>
                                <td>
                               <telerik:RadButton ID="btnUpdate" Text='<%# (Container is TreeListEditFormInsertItem) ? "Insert" : "Update" %>'
                                runat="server" CommandName='<%# (Container is TreeListEditFormInsertItem) ? "PerformInsert" : "Update" %>'
                                Icon-PrimaryIconCssClass="rbOk">
                            </telerik:RadButton>
                           
                            </td>
                                <td> <telerik:RadButton ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"
                                CommandName="Cancel" Icon-PrimaryIconCssClass="rbCancel">
                            </telerik:RadButton></td>
                                </tr>
                            </table>
                        </td>
                    </tr>
                    
                    <tr>
                        <td style="height:10px"></td>
                    </tr>
                </table>
                   
                </FormTemplate>
            </EditFormSettings>
            
        </telerik:RadTreeList>

[Eyup]

Hello Sayantan,

Please use Bind method instead of Eval for all of the edited fields controls. For practical implementation of your scenario, please refer to this demo:
http://demos.telerik.com/aspnet-ajax/treelist/examples/dataediting/formtemplateusercontrol/defaultcs.aspx

I hope this will prove helpful.

Regards,
Eyup
the Telerik team

[Sayantan]

Hello Eyup,
I tried with Bind method also to bind the textbox.But it showed the same error.
Please tell me how can I use databound asp:CheckBox inside the FormTemplate.



[Khurram Nazir]

Hello Sayantan,


In order to bind the controls in FormTemplate, you have to have all those columns in <column> section. If you don't want to show them then you to set the visible property to false, then Bind works.