Does not contain a property with the name

[Ben]

Hi All,

I have been searching for a fix for this issue but I dont feel im getting very far.

I have a grid with a DetailTables/GridTableView to expand the rows.

The grid is bound to a list of objects, these objects has a property which is another list of objects which holds the 'Code' property.

This issue does not happen on our dev servers, only on the production server.

Markup

<telerik:radgrid id="grdData" height="400px" width="100%" runat="server"
                        pagesize="50" showstatusbar="True" allowmultirowselection="False" allowpaging="True"
                        autogeneratecolumns="False" allowsorting="true" gridlines="None" cssclass="gridControl"
                        onneeddatasource="OnNeedDataSource" ondetailtabledatabind="RadGrid1_grdData"
                        onprerender="grdStudentsData_PreRender">
                        <pagerstyle mode="NumericPages"></pagerstyle>
                        <clientsettings allowcolumnsreorder="False" reordercolumnsonclient="False">
                            <Scrolling AllowScroll="True" UseStaticHeaders="True" />
                        </clientsettings>
                        <mastertableview width="98%" summary="Data" clientdatakeynames="PropertyA, PropertyB, PropertyC, PropertyD, PropertyE">
                            <DetailTables>
                                <telerik:GridTableView AutoGenerateColumns="false" DataKeyNames="Code,DisplayValue" Width="100%">
                                    <Columns>
                                        <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="DisplayValue"
                                            Display="True" HeaderText="Display Value" ReadOnly="True" Reorderable="True" Resizable="True"
                                            ShowSortIcon="False" UniqueName="DisplayValue" Visible="True">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="Code"
                                            Display="True" HeaderText="Code" ReadOnly="True" Reorderable="False" Resizable="True"
                                            ShowSortIcon="False" UniqueName="Code" Visible="True">
                                        </telerik:GridBoundColumn>
                                    </Columns>
                                </telerik:GridTableView>
                            </DetailTables>
                            <Columns>
                                <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="PropertyA"
                                    Display="True" HeaderText="PropertyA" ReadOnly="True" Reorderable="True" Resizable="True"
                                    ShowSortIcon="False" UniqueName="Entity" Visible="True">
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="PropertyB"
                                    Display="True" HeaderText="PropertyB" ReadOnly="True" Reorderable="False"
                                    Resizable="True" ShowSortIcon="False" UniqueName="CodeAttribute" Visible="True">
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="PropertyC"
                                    Display="True" HeaderText="PropertyC" ReadOnly="True" Reorderable="True"
                                    Resizable="True" ShowSortIcon="False" UniqueName="DescriptionAttribute" Visible="true">
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="PropertyD"
                                    Display="True" HeaderText="PropertyD" ReadOnly="True" Reorderable="True"
                                    Resizable="True" ShowSortIcon="False" UniqueName="OptionAttribute" Visible="true">
                                </telerik:GridBoundColumn>
                            </Columns>
                        </mastertableview>
                    </telerik:radgrid>

Error

DataBinding: 'Object' does not contain a property with the name 'Code'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: DataBinding: 'Object' does not contain a property with the name 'Code'.

Stack Trace:

[HttpException (0x80004005): DataBinding: 'Object' does not contain a property with the name 'Code'.]    System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) [phone]    Telerik.Web.UI.GridTableView.PopulateDataKeys(Object dataItem) +409   [GridException: There was a problem extracting DataKeyValues from the DataSource. Please ensure that DataKeyNames are specified correctly and all fields specified exist in the DataSource.]    Telerik.Web.UI.GridTableView.PopulateDataKeys(Object dataItem) +1060    Telerik.Web.UI.GridItemBuilder.CreateItems(GridGroupingContext group) +411    Telerik.Web.UI.GridTableView.CreateControlHierarchy(Boolean useDataSource) +1169    Telerik.Web.UI.GridTableView.CreateChildControls(IEnumerable dataSource, Boolean useDataSource) +873    System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +94    System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +182    System.Web.UI.WebControls.DataBoundControl.PerformSelect() +274    Telerik.Web.UI.GridTableView.DataBind() +432    Telerik.Web.UI.GridDataItem.OnExpand() +461    Telerik.Web.UI.GridItem.set_Expanded(Boolean value) +295    Telerik.Web.UI.RadCompositeDataBoundControl.OnPreRender(EventArgs e) +46    System.Web.UI.Control.PreRenderRecursiveInternal() +113    System.Web.UI.Control.PreRenderRecursiveInternal() +222    System.Web.UI.Control.PreRenderRecursiveInternal() +222    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4201

Anyone got any advice.

This happens as the grid/page loads.

Thanks
Ben

[Ben]

Hopefully this was missed by someone who can help.

Anyone? Still cant seem to fix this.

[Eyup]

Hi Ben,

It seems that the grid definition provided in the code snippet lacks ParentTableRelation tags which need to be configured when implementing a hierarchical grid structure:
http://demos.telerik.com/aspnet-ajax/grid/examples/data-editing/insert-update-delete-hierarchy/defaultcs.aspx

Please build your relations accordingly and let us know about the result.

Regards,
Eyup
Telerik