<telerik:RadGrid  
                ID="RadGrid_Fibers"  
                RenderMode="Auto"
                GridLines="Both" runat="server"
                Skin="Sunset"
                DataSourceID="SqlDataSource1_SP_Tow_Prog_Fibers_Select"
                AutoGenerateColumns="False">

                <MasterTableView Width="100%" ShowFooter="True"
                    DataSourceID="SqlDataSource1_SP_Tow_Prog_Fibers_Select"
                    DataKeyNames="TowProgFibers_ID">

                    <GroupByExpressions>
                        <telerik:GridGroupByExpression>
                            <SelectFields>
                                <telerik:GridGroupByField FieldAlias="Tow_Had" FieldName="Tow_Had" FormatString="" HeaderText="" />
                            </SelectFields>
                            <GroupByFields>
                                <telerik:GridGroupByField FieldAlias="Tow_Had" FieldName="Tow_Had" FormatString="" HeaderText="" />
                            </GroupByFields>
                        </telerik:GridGroupByExpression>
                    </GroupByExpressions>

<telerik:RadPageView runat="server" ID="RadPageView3">
                 <telerik:RadAjaxPanel ID="RadAjaxPanel3" runat="server" LoadingPanelID="RadAjaxLoadingPanel1" BackColor="#FFFFFF">                 
                     <div class="ContentRow">
                        <div class="column c1 ">
                            <telerik:RadLabel ID="labcrate" runat="server" Text="LabCrate" CssClass="LabOnRight" ForeColor="#000000"></telerik:RadLabel>
                        </div>
                        <div class="column c2 ">
                             <telerik:RadTextBox ID="txtCrate" runat="server"></telerik:RadTextBox>
                        </div>
                         <div class="column c3 ">
                            <telerik:RadButton ID="btnSubmit" runat="server" Text="Submit" AutoPostBack ="true"></telerik:RadButton>
                        </div>
                    </div>

                     <telerik:RadGrid RenderMode="Lightweight" runat="server" ID="RG_Carrier" Height="740px" AllowPaging="true" PageSize="10" AllowAutomaticDeletes="false"
                        AllowAutomaticUpdates="false" AllowAutomaticInserts="false" AllowFilteringByColumn="false" AllowMultiRowSelection="true"  OnNeedDataSource="RadGrid_NeedDataSource" >
                         <PagerStyle Position="Bottom" AlwaysVisible="true" PageSizes="10,20,30"></PagerStyle>
                        <ClientSettings EnableAlternatingItems="true" AllowKeyboardNavigation="False" EnablePostBackOnRowClick="true">
                            <Selecting AllowRowSelect="false" />
                            <Scrolling AllowScroll="true" UseStaticHeaders="true"></Scrolling>
                        </ClientSettings>
                         <AlternatingItemStyle BackColor ="LightBlue" />
                          <MasterTableView DataKeyNames="CrateNo" AutoGenerateColumns="false" CommandItemDisplay="Top" EditMode="PopUp">
                            <CommandItemSettings ShowAddNewRecordButton="false" />
                            <Columns>
                                  <telerik:GridBoundColumn AllowFiltering="false" FilterControlWidth="120px" AutoPostBackOnFilter="true" DataField="CrateNo" UniqueName="CrateNo" HeaderText="CrateNo">
                                    <HeaderStyle Width="150px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn AllowFiltering="false" DataField="Qty" UniqueName="Qty" HeaderText="Qty">
                                    <HeaderStyle Width="60px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn AllowFiltering="false" FilterControlWidth="120px" AutoPostBackOnFilter="true" DataField="ProductName" UniqueName="ProductName" HeaderText="ProductName">
                                    <HeaderStyle Width="150px" />
                                </telerik:GridBoundColumn>  

                                
                            </Columns>                                     
                               <DetailTables>
                                <telerik:GridTableView DataKeyNames="CratePhoto" ClientDataKeyNames="CratePhoto" runat="server" CommandDisplay="None" AutoGenerateColumns="true" AllowPaging="false" EditMode="PopUp">
                                    <Columns>
                                        <telerik:GridImageColumn DataType="System.String" 
  DataImageUrlFormatString="" 
  ImageAlign="Middle" ImageHeight="110px" ImageWidth="90px" HeaderText="CratePhoto">
</telerik:GridImageColumn>
    
                                    </Columns>
                                </telerik:GridTableView>
                            </DetailTables>
                        </MasterTableView>

                    </telerik:RadGrid>
                     
                      </telerik:RadAjaxPanel>
            </telerik:RadPageView>

<Telerik:RadButton ID="btn1" OnClick="btn_click">
...
<Telerik:RadOrgChart ID="OrgChart1">

protected DataTable table1 
{
            get
            {
                if (ViewState["table1"] != null)
                    return (DataTable)ViewState["table1"];
                else
                    return  null;
            }
            set
            {
                ViewState["table1"] = value;
            }
}
protected DataTable table2
{
            get
            {
                if (ViewState["table2"] != null)
                    return (DataTable)ViewState["table2"];
                else  return  null;
            }
            set
            {
                ViewState["table2"] = value;
            }
}


protected void Page_Load(object sender, EventArgs e) 
{
       if (!PostBack) // do something
       if (table1 != null && table2!=null) {
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "aaa";
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "bbb";
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataCollapsedField = "ccc";
                OrgChart1.RenderedFields.NodeFields.Add(new OrgChartRenderedField() { DataField = "A" });
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataSource = table1;

                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "aaa";
                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "ddd";
                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataSource = table2;

                OrgChart1.DataBind();
       }
}


protected void btn_click(object sender, EventArgs e) {

               // do something to provide data for table1 and table2

                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "aaa";
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "bbb";
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataCollapsedField = "ccc";
                OrgChart1.RenderedFields.NodeFields.Add(new OrgChartRenderedField() { DataField = "A" });
                OrgChart1.GroupEnabledBinding.NodeBindingSettings.DataSource = table1;

                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "aaa";
                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "ddd";
                OrgChart1.GroupEnabledBinding.GroupItemBindingSettings.DataSource = table2;

                OrgChart1.DataBind();

}