ClientDataSource and NestedViewTemplate Grid

[Mattia]

Hi,
I'm trying to populate the nestedviewtemplate in my grid..

If I use <# Eval("Code")%> in NestedViewTemplate I've got an error

<telerik:RadGrid ID="HomeRadGrid" runat="server" ClientDataSourceID="RadClientDataSource1"
             EnableEmbeddedSkins="False" AllowPaging="True" AllowSorting="True" AllowFilteringByColumn="True"
             Skin="MySkin" ShowGroupPanel="True" PageSize="10">
             <PagerStyle Mode="NextPrevAndNumeric" />
             <MasterTableView AutoGenerateColumns="False" ClientDataKeyNames="Id" HierarchyLoadMode="Client">
                 <NestedViewTemplate>
                     <div class="homeBackground">
                         <div style="float: left; padding-left: 10px; padding-top: 10px">
                             <asp:Image ID="ItemImage" runat="server" ImageUrl='<%# GetItemImageUrl(Container) %>'
                                 Width="150px" meta:resourcekey="ItemImageResource1" />
                         </div>
                         <div style="float: left; padding-left: 10px; width: 50%">
                             <div class="homeTitle">
                                 <asp:Label ID="CodeLabel" runat="server"></asp:Label>
                             </div>
                             <span style="color: #555555">
                                 <asp:Label ID="DescriptionLabel" runat="server"></asp:Label>
                             </span>
                             <hr class="lineSeparator" />
                             <table width="100%" class="homeInfo">
                                 <tr>
                                     <td>
                                         <strong>
                                             <asp:Label ID="SiteLabel" runat="server" meta:resourcekey="SiteLabelResource1">Site</asp:Label>:</strong>
                                         <asp:Label ID="SiteLabel" runat="server"></asp:Label>
                                     </td>
                                 </tr>
                                 <tr>
                                     <td>
                                         <strong>
                                             <asp:Label ID="PlateLabel" runat="server" meta:resourcekey="PlateLabelResource1">Plate</asp:Label>:</strong>
                                         <asp:Label ID="TargaLabel" runat="server"></asp:Label>
                                     </td>
                                 </tr>
                             </table>
                         </div>
                         <div style="float: right; padding-right: 10px; padding-left: 10px; padding-top: 10px">
                             <div style="width: 150px; height: 150px; border: solid 1px black" id='smallmap'>
                             </div>
                         </div>
                         <div style="clear: both">
                         </div>
                     </div>
                 </NestedViewTemplate>
                 <Columns>
                     <telerik:GridBoundColumn DataField="CompanyCode" HeaderText="Company Code" SortExpression="CompanyCode"
                         ShowFilterIcon="false" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains"
                         UniqueName="CompanyCode" Visible="true" meta:resourcekey="GridBoundColumnResource1">
                     </telerik:GridBoundColumn>
                     <telerik:GridBoundColumn DataField="Code" HeaderText="Project" SortExpression="Code"
                         ShowFilterIcon="false" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains"
                         UniqueName="CdcCode" Visible="true" meta:resourcekey="GridBoundColumnResource2">
                     </telerik:GridBoundColumn>
                     <telerik:GridBoundColumn DataField="Site" HeaderText="Site" SortExpression="Site"
                         AutoPostBackOnFilter="True" CurrentFilterFunction="Contains" ShowFilterIcon="false"
                         ItemStyle-Width="50px" FilterControlWidth="30px" UniqueName="Site" Visible="true"
                         meta:resourcekey="GridBoundColumnResource3">
                         <ItemStyle Width="50px"></ItemStyle>
                     </telerik:GridBoundColumn>
                     ...
                 </Columns>
             </MasterTableView>
             <ClientSettings ReorderColumnsOnClient="false" AllowDragToGroup="True" AllowColumnsReorder="false">
                 <ClientEvents OnRowDblClick="RowDblClick" OnHierarchyExpanded="LoadSmallMap" OnHierarchyExpanding="CollapseOtherRows">
                 </ClientEvents>
                 <Selecting AllowRowSelect="true"></Selecting>
             </ClientSettings>
         </telerik:RadGrid>

   <telerik:RadClientDataSource ID="RadClientDataSource1" runat="server" AllowBatchOperations="true">
        <ClientEvents OnChange="LoadBigMap" />
        <DataSource>
            <WebServiceDataSourceSettings>
                <Select Url="load_map.asmx/GetHomeData" RequestType="Post" DataType="JSON" ContentType="application/json; charset=utf-8" />
            </WebServiceDataSourceSettings>
        </DataSource>
        <Schema DataName="d">
        </Schema>
        <Schema>
            <Model>
                <telerik:ClientDataSourceModelField FieldName="Id" DataType="Number" />
                <telerik:ClientDataSourceModelField FieldName="CompanyCode" DataType="String" />
                <telerik:ClientDataSourceModelField FieldName="Code" DataType="String" />
                <telerik:ClientDataSourceModelField FieldName="Site" DataType="String" />
...
            </Model>
        </Schema>
    </telerik:RadClientDataSource>

Thanks

[Alex Fuernsinn]

Hi,
have you forgotten the first % symbol?

<%# Eval("Code")%>

[Mattia]

It was a copy and paste error.. I have % symbol in my code..

I made some test..

1. <%# Eval("Site.Code")%>
ERROR
DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Site'.

2. <%# Eval("SomeOtherField")%>
 <asp:Label ID="Label1" runat="server" Text='<%# Eval("SomeOtherField")%>'></asp:Label>
NO ERROR but label text is empty

[Mattia]

Could you provide me an example using grid with nested view template and ClientDataSource?

I couldn't find it in telerik demo project

Thanks

[Angel Petrov]

Hello Stefania,

I am sorry to say but you can not use bind expression to populate the NestedViewTemplate. The reason for this is that the current implementation of the grid does not support hierarchy with client-side data-binding. If using a hierarchical grid is mandatory I recommend binding the grid on the server.

Regards,
Angel Petrov
Telerik

 

 

[Mattia]

Hi,
thanks for your reply.

This is my workaround..

OnHierarchyExpanded="PopulateNestedView"

function PopulateNestedView(sender, args) {               

              if (args) {

                  if (args._dataKeyValues != null) {

                      var item = args.get_gridDataItem()._dataItem;

                      var id = args._dataKeyValues.Id;

                   

                      //popolo i campi del sottogrid

                     

                      var code = item.Code;

                      var desc = item.Description;

                      $('[id$="CodeLabel"]').html(code);

                      $('[id$="DescriptionLabel"]').html(desc);

                      ...

                       

                  }

              }

          }