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[Solved] Detail table will not display

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Dan
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Dan asked on 30 Dec 2008, 02:54 PM
I am using the DetailTableDataBind event for binding my Detail table, and it appears to work properly in debug, but the grid row will not expand.  When I click on the expand icon, the loading icon appears bit the row does not expand.  What am I missing?

Code:

<%@ Page Language="C#" MasterPageFile="~/Master/UserPages.master" AutoEventWireup="true"
CodeFile="lkup_pronotes2.aspx.cs" Inherits="Lookup_lkup_pronotes2" %>

<%@ Register Assembly="RadAjax.Net2" Namespace="Telerik.WebControls" TagPrefix="radA" %>
<%@ Register Assembly="RadInput.Net2" Namespace="Telerik.WebControls" TagPrefix="radI" %>
<%@ Register Assembly="RadGrid.Net2" Namespace="Telerik.WebControls" TagPrefix="radG" %>
<asp:Content ID="Content1" ContentPlaceHolderID="cphWebData" runat="Server">

    <div class='content'>
        <radA:RadAjaxPanel ID="RadAjaxPanel1" LoadingPanelID="AjaxLoadingPanel1" runat="server"
            Height="100%" Width="100%">
        <radg:radgrid  ID="RadGrid1" runat="server" OnDetailTableDataBind="RadGrid1_DetailTableDataBind"
            AllowExpandCollapse="true" AllowMultiRowSelection="false">
            <MasterTableView CommandItemDisplay="Bottom">
                <%-- <EditFormSettings EditFormType="Template">
                    <FormTemplate>
                        <table style="width: 80%" align="center">
                        </table>
                    </FormTemplate>
                </EditFormSettings> --%>
                <Columns>
                    <radG:GridBoundColumn HeaderText="ID" UniqueName="cpk_pronotes" DataField="cpk_pronotes" Display="False" ReadOnly="True" />
                    <radG:GridBoundColumn HeaderText="Entered" UniqueName="date_" DataField="date_" HeaderButtonType="TextButton" />
                    <radG:GridBoundColumn HeaderText="Entered By" UniqueName="username" DataField="username" HeaderButtonType="TextButton" />
                    <radG:GridBoundColumn HeaderText="Subject" UniqueName="subject" DataField="subject" HeaderButtonType="TextButton" />
                    <radG:GridBoundColumn HeaderText="F/U Date" UniqueName="followup" DataField="followup" DataFormatString="{0:d}" HeaderButtonType="TextButton" />
                    <radG:GridBoundColumn HeaderText="F/U Assigned To..." UniqueName="funame" DataField="funame" HeaderButtonType="TextButton" />
                    <radG:GridBoundColumn HeaderText="F/U Complete" UniqueName="fudone" DataField="fudone" HeaderButtonType="TextButton" />
                    <%-- <radG:GridButtonColumn ButtonType="PushButton" Text="Edit" CommandName="Edit" UniqueName="edit" />
                    <radG:GridButtonColumn ButtonType="PushButton" Text="Delete" CommandName="Delete" UniqueName="delete" /> --%>
                </Columns>
                <DetailTables>
                    <radG:GridTableView DataKeyNames="cpk_pronotes">
                        <Columns>
                            <radG:GridBoundColumn HeaderText="ID"  DataField="cpk_pronotes" Display="False" ReadOnly="True" />
                            <radG:GridBoundColumn HeaderText="Notes" UniqueName="notes" DataField="notes" HeaderButtonType="TextButton" />
                        </Columns>
                    </radG:GridTableView>
                </DetailTables>
                <CommandItemTemplate>
                    <asp:Button ID="btnInsert" CommandName="InitInsert"
                        runat="server" Text="Add Item" />
                    <asp:Button ID="btnRefresh" CommandName="RebindGrid"
                        runat="server" Text="Refresh List" />
                </CommandItemTemplate>
            </MasterTableView>
            <HeaderStyle Font-Bold="True" Font-Size="14px" Font-Underline="False" HorizontalAlign="Left" />
            <ItemStyle Font-Size="12px" />
            <AlternatingItemStyle Font-Size="12px" />
        </radg:radgrid>
           
        </radA:RadAjaxPanel>
        <radA:AjaxLoadingPanel ID="AjaxLoadingPanel1" runat="server" Height="75px" Width="75px">
            <asp:Image ID="Image1" runat="server" AlternateText="Loading..." ImageUrl="~/RadControls/Ajax/Skins/Default/Loading3.gif" />
        </radA:AjaxLoadingPanel>
    </div>
    <asp:SqlDataSource ID="dsParent" runat="server" DataSourceMode="DataReader" ConflictDetection="CompareAllValues"
        OldValuesParameterFormatString="Original_{0}" OnUpdating="dsParent_RecordChanged"></asp:SqlDataSource>
    <asp:SqlDataSource ID="dsDetails" runat="server" DataSourceMode="DataReader"></asp:SqlDataSource>
</asp:Content>
-----------------------------------------------

using System;
using System.Web.UI.WebControls;
using SQLDataAccess;
using Telerik.WebControls;

public partial class Lookup_lkup_pronotes2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        WP_Utility wpUtility = new WP_Utility();
        wpUtility.GridDefaults(RadGrid1);

        SqlBuilder sbCommand = new SqlBuilder();
        dsParent.ConnectionString = sbCommand.GetConnectionString();
        dsParent.SelectCommand = "wa_ProgressNotesList";
        dsParent.SelectCommandType = SqlDataSourceCommandType.StoredProcedure;
        if (!IsPostBack)
        {
            SessionParameter spMrn = new SessionParameter("MRN", TypeCode.String, "MRN");
            dsParent.SelectParameters.Add(spMrn);
        }

        dsParent.DeleteCommand = "exec wa_ProgressNoteDelete @Original_CPK_PRONOTES";

        dsParent.UpdateParameters.Add("CPK_PRONOTES", TypeCode.Int32, "0");
        dsParent.UpdateParameters.Add("DATE_", TypeCode.String, "");
        dsParent.UpdateParameters.Add("USERNAME", TypeCode.String, "");
        dsParent.UpdateParameters.Add("SUBJECT", TypeCode.String, "");
        dsParent.UpdateParameters.Add("FOLLOWUP", TypeCode.String, "");
        dsParent.UpdateParameters.Add("FUNAME", TypeCode.String, "");
        dsParent.UpdateParameters.Add("FUDONE", TypeCode.String, "");

        //foreach (Parameter param in dsParent.UpdateParameters)
        //{
        //    if (param.Name.Length < 4 || !param.Name.Substring(0, 4).Equals("CPK_"))
        //        sbCommand.UpdateFields.Add(param.Name.ToUpper());
        //}

        dsParent.UpdateCommand = "wa_ProgressNoteUpdate";
        dsParent.UpdateCommandType = SqlDataSourceCommandType.StoredProcedure;

        dsParent.InsertParameters.Add("DATE_", TypeCode.String, "");
        dsParent.InsertParameters.Add("USERNAME", TypeCode.String, "");
        dsParent.InsertParameters.Add("SUBJECT", TypeCode.String, "");
        dsParent.InsertParameters.Add("FOLLOWUP", TypeCode.String, "");
        dsParent.InsertParameters.Add("FUNAME", TypeCode.String, "");
        dsParent.InsertParameters.Add("FUDONE", TypeCode.String, "");

        dsParent.InsertCommand = "wa_ProgressNoteInsert";
        dsParent.InsertCommandType = SqlDataSourceCommandType.StoredProcedure;

        RadGrid1.DataSourceID = "dsParent";
        RadGrid1.MasterTableView.DataKeyNames = new string[] { "cpk_pronotes" };
    }

    protected void RadGrid1_DetailTableDataBind(object source, Telerik.WebControls.GridDetailTableDataBindEventArgs e)
    {
        GridDataItem dataItem = (GridDataItem)e.DetailTableView.ParentItem;
        //string strKey = dataItem["pk"].Text;
        string strKey = dataItem.GetDataKeyValue("cpk_pronotes").ToString();

        SqlBuilder sbCommand = new SqlBuilder();

        dsDetails.ConnectionString = sbCommand.GetConnectionString();

        dsDetails.SelectCommand = "wa_PatientPronotesDetails";
        dsDetails.SelectCommandType = SqlDataSourceCommandType.StoredProcedure;

        if (dsDetails.SelectParameters.Count < 1)
        {
            dsDetails.SelectParameters.Add("CPK_PRONOTES", TypeCode.Int32, strKey);
        }
        else
        {
            Parameter pFKey = new Parameter("CPK_PRONOTES", TypeCode.Int32, strKey);
            dsDetails.SelectParameters["CPK_PRONOTES"] = pFKey;
        }

        e.DetailTableView.DataSourceID = "dsDetails";
        e.DetailTableView.Width = Unit.Percentage(90);

    }

    protected void dsParent_RecordChanged(object sender, SqlDataSourceCommandEventArgs e)
    {
        string eventname = e.Command.CommandText.Substring(0, 6).ToUpper();
        string reason = "";
        string username = Session["LastName"].ToString() + "," + Session["FirstName"].ToString();
        switch (eventname)
        {
            case "UPDATE":
                //reason = "Patient Contact Information updated.";
                try
                {
                    int pk = Convert.ToInt32(e.Command.Parameters["@Original_CPK_PRONOTES"].Value);
                    DataAccess Data = new DataAccess("PRONOTES", "CPK_PRONOTES", pk);

                    Data.LogTransaction(e.Command.Parameters, "original_", Convert.ToInt32(Session["cpruser_no"]), reason, username);
                }
                catch (Exception oError)
                {
                    reason = oError.ToString();
                    reason = reason.Trim();
                }
                break;
            default:
                break;
        }
    }
}

Thanks for the help.  Dan

10 Answers, 1 is accepted

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0
Vlad
Telerik team
answered on 30 Dec 2008, 03:14 PM
Hello Dan,

Please use NeedDataSource to provide DataSource for the grid. You can check this example for more info:
http://demos.telerik.com/aspnet-ajax/Grid/Examples/Programming/DetailTableDataBind/DefaultCS.aspx

Sincerely yours,
Vlad
the Telerik team

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Dan
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answered on 30 Dec 2008, 04:11 PM
Vlad,

Will this work    using Telerik.WebControls ?

I ask because we're using the older ASP.NET controls, and I will have to recode quite a bit.

Also, will I be able to define my DataSource using my SqlBuilder component, rather than the sample GetDataTable routine,  as I will be using that for the dataset updates and deletes.

Mike
0
Accepted
Vlad
Telerik team
answered on 05 Jan 2009, 07:33 AM
Hello Dan,

Here is the same demo for RadGrid "Classic":
http://demos.telerik.com/aspnet/Grid/Examples/Programming/DetailTableDataBind/DefaultCS.aspx

Generally you can use any IEnumerable as grid DataSource or you can bind the grid via DataSourceID.

Greetings,
Vlad
the Telerik team

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0
John Davis
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answered on 02 Apr 2009, 07:35 PM
I have the same problem. I tried

Method 1: using ObjectDataSource for both master detail, using a technique I got from a Telerik example. Actually everything works when I put the code into a simple version of my app, that I was preparing to submit as an incident.  But it does not work in my app.

Method 2: Also I tried the technique in http://demos.telerik.com/aspnet-ajax/grid/examples/programming/detailtabledatabind/defaultcs.aspx
by using NeedDataSource instead of ObjectDataSource for the detail table.

Method 3: Used code-behind for data source of both master/detail tables.

 

 

OnDetailTableDataBind="RadGrid1_DetailTableDataBind" 

 

 

 

 OnNeedDataSource="RadGrid1_NeedDataSource"

In both cases, when I click the "expand" icon, the code executes to get the data for the detail grid. In method 2, I can verify in the debugger that e.DetailTableView.DataSource has records.  But the detailed table does not display.

How can I fix or how can I debug this problem?

Steve

protected void RadGrid1_DetailTableDataBind(object source, Telerik.Web.UI.GridDetailTableDataBindEventArgs e)

 

{

 

GridDataItem dataItem = (GridDataItem)e.DetailTableView.ParentItem;

 

 

 

switch (e.DetailTableView.Name)

 

{

 

 

case "DS1Detail":

 

{

 

 

 

 

 

e.DetailTableView.DataSource =

MgtPickLineManager.GetPickTicketsForOneDay(Convert.ToInt32(lblWarehouse_ID.Text), Convert.ToDateTime(dataItem.GetDataKeyValue("Day")));

 

 

 

 

 

 

 

break;

 

}

etc.

METHOD 1:

<rad:RadGrid ID="RadGrid1" Font-Size="Smaller" runat="server" PageSize="40" AllowPaging="True"
AutoGenerateColumns="False" ShowStatusBar="True" GridLines="None" MasterTableView-NoMasterRecordsText="No records; try different settings"
DataSourceID="MasterDatasource1" OnInit="RadGrid1_Init" AllowFilteringByColumn="True" AllowSorting="True"
Width="989px" OnItemCreated="RadGrid1_ItemCreated" >
<PagerStyle Mode="Slider" />
<ClientSettings>
<Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="True">
</Scrolling>
</ClientSettings>
<MasterTableView AutoGenerateColumns="False" DataKeyNames="Day" TableLayout="fixed">
<ExpandCollapseColumn Visible="True"></ExpandCollapseColumn>
<Columns>
 <rad:GridDateTimeColumn DataField="Day" HeaderText="Day" UniqueName="Day" ReadOnly="true" DataFormatString="{0:d}" 
 PickerType="DatePicker" >
 <HeaderStyle Width="189px" />
 </rad:GridDateTimeColumn>
 <rad:GridBoundColumn DataField="MinPerPickTicket" HeaderText="MinPerPickTicket" UniqueName="MinPerPickTicket" ReadOnly="true" DataFormatString="{0:#,###.##}" >
 <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="SecPerPickLin" HeaderText="SecPerPickLin" UniqueName="SecPerPickLin" ReadOnly="true" DataFormatString="{0:d}"   >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="SecPerQtyToPick" HeaderText="SecPerQtyToPick" UniqueName="SecPerQtyToPick" ReadOnly="true" DataFormatString="{0:d}"   >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="PickDuration" HeaderText="PickDuration" UniqueName="PickDuration" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="NumPickTicket" HeaderText="PickTicket" UniqueName="NumPickTicket" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="NumPickLin" HeaderText="PickLine"  UniqueName="NumPickLin" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="QtyToPick" HeaderText="ToPick" UniqueName="QtyToPick" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="QtyPicked" HeaderText="Picked" UniqueName="QtyPicked" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
</Columns>
<DetailTables>
<rad:GridTableView DataSourceID="DetailDataSource1" Name="DS1Detail"
CellSpacing="-1">
<ParentTableRelation>
 <rad:GridRelationFields DetailKeyField="Day" MasterKeyField="Day" />
</ParentTableRelation>
<Columns>
  <rad:GridBoundColumn DataField="PickTicket" HeaderText="PickTicket" UniqueName="PickTicket" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSecPerPickLin" HeaderText="PickDurationSecPerPickLin" UniqueName="PickDurationSecPerPickLin" ReadOnly="true" DataFormatString="{0:#,###.##}" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSecPerQtyToPick" HeaderText="PickDurationSecPerQtyToPick" UniqueName="PickDurationSecPerQtyToPick" ReadOnly="true" DataFormatString="{0:#,###.##}" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSec" HeaderText="PickDurationSec" UniqueName="PickDurationSec" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="NumPickLin" HeaderText="NumPickLin" UniqueName="NumPickLin" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="QtyToPick" HeaderText="QtyToPick" UniqueName="QtyToPick" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="QtyPicked" HeaderText="QtyPicked" UniqueName="QtyPicked" ReadOnly="true" >
  </rad:GridBoundColumn>
</Columns>
</rad:GridTableView>
</DetailTables>
</MasterTableView>
</rad:RadGrid>

METHOD 2:

<rad:RadGrid ID="RadGrid1" Font-Size="Smaller" runat="server" PageSize="40" AllowPaging="True"
AutoGenerateColumns="False" ShowStatusBar="True" GridLines="None" MasterTableView-NoMasterRecordsText="No records; try different settings"
DataSourceID="MasterDatasource1" OnDetailTableDataBind="RadGrid1_DetailTableDataBind" OnInit="RadGrid1_Init" AllowFilteringByColumn="True" AllowSorting="True"
Width="989px" OnItemCreated="RadGrid1_ItemCreated" >
<PagerStyle Mode="Slider" />
<ClientSettings>
<Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="True">
</Scrolling>
</ClientSettings>
<MasterTableView AutoGenerateColumns="False" DataKeyNames="Day" TableLayout="fixed">
<ExpandCollapseColumn Visible="True"></ExpandCollapseColumn>
<Columns>
 <rad:GridDateTimeColumn DataField="Day" HeaderText="Day" UniqueName="Day" ReadOnly="true" DataFormatString="{0:d}" 
 PickerType="DatePicker" >
 <HeaderStyle Width="189px" />
 </rad:GridDateTimeColumn>
 <rad:GridBoundColumn DataField="MinPerPickTicket" HeaderText="MinPerPickTicket" UniqueName="MinPerPickTicket" ReadOnly="true" DataFormatString="{0:#,###.##}" >
 <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="SecPerPickLin" HeaderText="SecPerPickLin" UniqueName="SecPerPickLin" ReadOnly="true" DataFormatString="{0:d}"   >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="SecPerQtyToPick" HeaderText="SecPerQtyToPick" UniqueName="SecPerQtyToPick" ReadOnly="true" DataFormatString="{0:d}"   >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="PickDuration" HeaderText="PickDuration" UniqueName="PickDuration" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="NumPickTicket" HeaderText="PickTicket" UniqueName="NumPickTicket" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="NumPickLin" HeaderText="PickLine"  UniqueName="NumPickLin" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="QtyToPick" HeaderText="ToPick" UniqueName="QtyToPick" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
 <rad:GridBoundColumn DataField="QtyPicked" HeaderText="Picked" UniqueName="QtyPicked" ReadOnly="true" >
  <HeaderStyle Width="100px" />
 </rad:GridBoundColumn>
</Columns>
<DetailTables>
<rad:GridTableView Name="DS1Detail"
CellSpacing="-1">

<Columns>
  <rad:GridBoundColumn DataField="PickTicket" HeaderText="PickTicket" UniqueName="PickTicket" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSecPerPickLin" HeaderText="PickDurationSecPerPickLin" UniqueName="PickDurationSecPerPickLin" ReadOnly="true" DataFormatString="{0:#,###.##}" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSecPerQtyToPick" HeaderText="PickDurationSecPerQtyToPick" UniqueName="PickDurationSecPerQtyToPick" ReadOnly="true" DataFormatString="{0:#,###.##}" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="PickDurationSec" HeaderText="PickDurationSec" UniqueName="PickDurationSec" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="NumPickLin" HeaderText="NumPickLin" UniqueName="NumPickLin" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="QtyToPick" HeaderText="QtyToPick" UniqueName="QtyToPick" ReadOnly="true" >
  </rad:GridBoundColumn>
  <rad:GridBoundColumn DataField="QtyPicked" HeaderText="QtyPicked" UniqueName="QtyPicked" ReadOnly="true" >
  </rad:GridBoundColumn>
</Columns>
</rad:GridTableView>
</DetailTables>
</MasterTableView>
</rad:RadGrid>

METHOD 3:

<

 

rad:RadGrid ID="RadGrid1" Font-Size="Smaller" runat="server" PageSize="40" AllowPaging="True"

 

AutoGenerateColumns

 

="False" ShowStatusBar="True" GridLines="None" MasterTableView-NoMasterRecordsText="No records; try different settings"

 

OnDetailTableDataBind

 

="RadGrid1_DetailTableDataBind" OnInit="RadGrid1_Init" AllowFilteringByColumn="True" AllowSorting="True"

 

Width

 

="989px" OnNeedDataSource="RadGrid1_NeedDataSource" OnItemCreated="RadGrid1_ItemCreated" >

 

0
Pavlina
Telerik team
answered on 06 Apr 2009, 10:59 AM
Hello John,

If you want to achieve the desired functionality you need to define the ParentTableRelations/DataKeyNames for the MasterTableView/GridTableViews according to the database relations conventions.

            - the primary key column name for each table in the grid source (used for master/detail table population) should be added to the DataKeyNames collection of the respective master/detail table; 
            - the MasterKeyField in the GridRelationFields should match the primary key of the parent table in the corresponding relation; 
            - the DetailKeyField in the GridRelationFields should match the foreign key of the child table in the corresponding relation.

Find more information about hierarchy binding in the following help topics:
Hierarchical data-binding using declarative relations
Hierarchical data-binding using DetailTableDataBind event

I hope this information helps.

All the best,

Pavlina
the Telerik team

 


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John Davis
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answered on 06 Apr 2009, 12:41 PM
Pavlina,
Thank you for your response.

I do not understand it.  Because this example, the one I followed, 

http://demos.telerik.com/aspnet-ajax/grid/examples/programming/detailtabledatabind/defaultcs.aspx

does not define ParentTableRelations/DataKeyNames for the MasterTableView/GridTableViews, as you suggest. But it still works.

Also the technique in the above Telerik example works in a simple project I built, that I was planning on submitting with a support ticket.

Me problem is, the technique in the above Telerik example does not work in my full Web application. How can I debug or fix?

Steve

0
Pavlina
Telerik team
answered on 07 Apr 2009, 12:20 PM
Hello John Davis,

Unfortunately I could not reproduce the problem you are facing in your full Web application. At this point in order to find a quick solution/fix I will ask you to open a formal support ticket and send us your Web application. 
I will review it and get back to you with additional information/suggestions.

All the best,
Pavlina
the Telerik team

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John Davis
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answered on 07 Apr 2009, 01:39 PM
Thank you for responding.  I found a solution, as part of ticket  202543.

But it would still help if you can confirm that it is not necessary to use

 ParentTableRelations/DataKeyNames for the MasterTableView/GridTableViews

to achieve a hierarchy.

For example it seems the following implements a hierarchy without a ParentTableRelation:
http://demos.telerik.com/aspnet-ajax/grid/examples/programming/detailtabledatabind/defaultcs.aspx

Steve
0
Pavlina
Telerik team
answered on 08 Apr 2009, 02:41 PM
Hello John,

You also have an option to generate the detail table content on demand intercepting the DetailTableDataBind event of the grid. Review the following articles for further details :
Hierarchical data-binding using DetailTableDataBind event
Programmatic Binding

Greetings,
Pavlina
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John Davis
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answered on 08 Apr 2009, 04:16 PM
Pavlina
Thank you for references.
Using the DetailTableDataBind event works well for me.
Steve
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