Binding a radgrid inside a GridTemplateColumn in a Radgrid.

[Neil]

Hi there,
 
First post on this forum :)

My question relates to placing a radgrid inside a GridTemplateColumn within a RadGrid, I'm not sure how to do it.  Currently i have a radgrid as per below:

 <telerik:RadGrid id="rgdListLicences" runat="server" Width="100%"  GridLines="None" Skin="eLicensing_paging"  EnableEmbeddedSkins="false" EnableViewState="true">
                     <MasterTableView RetrieveAllDataFields="false" AutoGenerateColumns="false" >
                        <Columns>
                            <telerik:GridBoundColumn DataField="clientRef" HeaderText="Client Ref">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="commencementDate" HeaderText="Commencement Date">
                            </telerik:GridBoundColumn>
                            <telerik:GridTemplateColumn UniqueName="validations" HeaderText="Validations" SortExpression="CompanyName" InitializeTemplatesFirst="false">
                                <ItemTemplate>
                                    <telerik:radgrid ID="rgdValidations"  runat="server" >
                                        <MasterTableView >
                                            <Columns >
                                                <telerik:GridBoundColumn DataField="validations.Text">
                                                </telerik:GridBoundColumn>
                                            </Columns>
                                        </MasterTableView>
                                    </telerik:radgrid>
                                </ItemTemplate>
                            </telerik:GridTemplateColumn>
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>


And I Bind to the radgrid in the codebehind, as follows:

rgdListLicences.DataSource = CType(licenceImportParser.getLicences.Licence.ToList, IEnumerable)
rgdListLicences.DataBind()


The Datasource licenceImportParser.getLicences.Licence, is a list of objects.  These objects contain several properties, which bind successfully to the other columns (ie. commencement date above), but also contain a list of Strings called validations which i need to bind to the radgrid inside the GridTemplateColumn.

I thought i could just set the DataField="validations.Text"  or something like that considering validations is a list of Strings.. but not sure here!


But I cant figure out how i can bind it!  Any help is greatly appreciated!!

Thanks
Neil

[Jayesh Goyani]

Hello Neil ,

  <MasterTableView DataKeyNames="ID">
 <Columns>
  <telerik:GridTemplateColumn>
                        <ItemTemplate>
                            <telerik:RadGrid ID="RadGrid2" runat="server" OnNeedDataSource="RadGrid2_NeedDataSource" ></telerik:RadGrid>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
............
.............

protected void RadGrid2_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
    {

        RadGrid RadGrid2 = sender as RadGrid;
        GridDataItem item = RadGrid2.NamingContainer as GridDataItem;
        string strKey = item.GetDataKeyValue("ID").ToString();



        dynamic data = new[] {
                new { Name ="Name_" +strKey}
            };

        RadGrid2.DataSource = data;
    }



 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {

        if (e.Item is GridDataItem)
        {
            GridDataItem item = e.Item as GridDataItem;
            RadGrid RadGrid2 = item.FindControl("RadGrid2") as RadGrid;
            RadGrid2.Rebind();
        }

}

Thanks,
Jayesh Goyani

[Neil]

Hi Jayesh,

Thanks alot for the answer, I am nearly there.  But in your example you bind the Data Key Value "ID" from the parent grid to the child grid.  I need to be able to access a list of strings which is contain withing the object that is bound to the parent grid?

Is this possible?
Thanks
Neil

[Jayesh Goyani]

Hello Neil,

You can also assign multiple field in DataKey.

<MasterTableView DataKeyNames="ID,Name,Profile">

GridDataItem item = RadGrid2.NamingContainer as GridDataItem;
        string strKey = item.GetDataKeyValue("ID").ToString();
       string strName = item.GetDataKeyValue("Name").ToString();

// You can also use parent's column also.

<MasterTableView>
<Columns>
<telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID">
                   </telerik:GridBoundColumn>
                   <telerik:GridBoundColumn DataField="Name" HeaderText="Name" UniqueName="Name" >
                   </telerik:GridBoundColumn>

GridDataItem item = RadGrid2.NamingContainer as GridDataItem;
        string strKey = item["ID"].text;
       string strName =  item["Name"].text;

Thanks,
Jayesh Goyani

[Neil]

I see what you mean Jayesh thanks!


I ended up using your method but with a slight variation on the needdatasource for the inner grid.

Protected Sub rgdValidations_NeedDataSource(ByVal sender As Object, ByVal e As GridNeedDataSourceEventArgs)

    Dim RadGrid2 As RadGrid = CType(sender, RadGrid)
    Dim item As GridDataItem = RadGrid2.NamingContainer
    Dim validations As List(Of String) = CType(item.DataItem, LicencesLicence).validations

    RadGrid2.DataSource = validations
End Sub

[Manish]

Hi your post helps me alot but I need to fix another problem if I want to enable paging in RadGrid2 than how can I do that. Can you please help me?

[Manish]

Hi your post helps me alot but I need to fix another problem if I want to enable paging in RadGrid2 than how can I do that. Can you please help me?