Dear Telerik Team,

When I am trying to display data using radgrid I am getting error like "Index was out of range. Must be non-negative and less than the size of the collection. Parameter: Index".

Here is my code

<telerik:RadGrid ID="gvCktMap" BorderColor="White" runat="server" AutoGenerateColumns="true" 
                            AllowSorting="true" BackColor="White" AllowPaging="true" PageSize="25" GridLines="None" 
                            OnPageIndexChanging="gvCktMap_PageIndexChanging" OnRowCancelingEdit="gvCktMap_RowCancelingEdit" 
                            OnRowCommand="gvCktMap_RowCommand" OnRowUpdating="gvCktMap_RowUpdating" OnRowDataBound="gvCktMap_RowDataBound" 
                            OnSorting="gvCktMap_Sorting" OnRowEditing="gvCktMap_RowEditing" ShowGroupPanel="True" 
                            EnableHeaderContextMenu="true" EnableHeaderContextFilterMenu="true" AllowMultiRowSelection="true" 
                            AllowFilteringByColumn="True" AllowCustomPaging="false" OnItemCreated="gvCktMap_ItemCreated" 
                            EnableViewState="false" OnNeedDataSource="gvCktMap_NeedDataSource" OnItemUpdated="gvCktMap_ItemUpdated" 
                            > 
                            <MasterTableView DataKeyNames="sId" UseAllDataFields="true"> 
                                <Columns> 
                                    <telerik:GridBoundColumn UniqueName="sId" HeaderText="sId" DataField="sId" Visible="false"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="orderId" HeaderText="orderId" DataField="orderId"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="REJ" HeaderText="REJ" DataField="REJ"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="Desc" HeaderText="Desc" DataField="Desc"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="CustomerName" HeaderText="CustomerName" DataField="CustomerName"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="MarketName" HeaderText="MarketName" DataField="MarketName"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="HeadendName" HeaderText="HeadendName" DataField="HeadendName"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="SiteName" HeaderText="SiteName" DataField="SiteName"> 
                                    </telerik:GridBoundColumn> 
                                    <telerik:GridBoundColumn UniqueName="TaskStatus" HeaderText="TaskStatus" DataField="TaskStatus"> 
                                    </telerik:GridBoundColumn> 
                                </Columns> 
                        </telerik:RadGrid> 

Here is my code behind

private void bingGrid() 
{ 
    try 
    { 
        gvCktMap.Columns.Clear(); 
        DataSet dsResult = new DataSet(); 
        DataSet dsEditItems = new DataSet(); 
        dsEditItems.ReadXml(Server.MapPath("XMLS/" + Session["TaskID"].ToString() + ".xml")); 

        clsSearch_BL clsObj = new clsSearch_BL(); 
        clsObj.TaskID = (string)Session["TaskID"]; 
        clsObj.CustName = (string)Session["CustName"]; 
        clsObj.MarketName = (string)Session["MarketName"]; 
        clsObj.HeadendName = (string)Session["HeadendName"]; 
        clsObj.SiteName = (string)Session["SiteName"]; 
        clsObj.TaskStatus = (string)Session["TaskStatus"]; 
        clsObj.OrdType = (string)Session["OrdType"]; 
        clsObj.OrdStatus = (string)Session["OrdStatus"]; 
        clsObj.ProName = (string)Session["ProName"]; 
        clsObj.LOC = (string)Session["LOC"]; 

        dsResult = clsObj.getSearchResults_BL(clsObj); 
        Session["SearchRes"] = dsResult; 
        DataTable dtFilter = new DataTable(); 
        DataColumn dtCol = new DataColumn("FilterBy"); 
        dtFilter.Columns.Add(dtCol); 
        dtCol = new DataColumn("DataType"); 
        dtFilter.Columns.Add(dtCol); 
        gvCktMap.DataSource = dsResult; 
        gvCktMap.DataBind(); 
} 
    catch (Exception ex) 
    { 
    } 
} 

If i remove <MasterTableView></MasterTableView> Its working fine without any error. But for some reasons i need to use <MasterTableView></MasterTableView> Can anyone help me out to fix this error.

Thanks In Advance