Sorting problem "Column Not found"

[Dennis Riis]

I am binding the RADGrid to a collection of business objects. These business objects implement an interface, that inherits another interface.

When I am trying to sort (or do any other operation) on a column bound to a property, that only exists on the base interface, I get this exception:

[IndexOutOfRangeException: Cannot find column ItemNumber.]
   System.Data.DataTable.ParseSortString(String sortString) +4826462
   System.Data.DataView.CheckSort(String sort) +32
   System.Data.DataView.set_Sort(String value) +128
   Telerik.Web.UI.GridEnumerableFromDataView.PerformTransformation() +5028
   Telerik.Web.UI.GridEnumerableFromDataView.TransformEnumerable() +41
   Telerik.Web.UI.GridTableView.GetEnumerator(Boolean useDataSource, GridEnumerableBase resolvedDataSource, ArrayList dataKeysArray) +171
   Telerik.Web.UI.GridTableView.CreateControlHierarchy(Boolean useDataSource) +861
   Telerik.Web.UI.GridTableView.CreateChildControls(IEnumerable dataSource, Boolean useDataSource) +786
   System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +57
   System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +114
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +31
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +142
   Telerik.Web.UI.GridTableView.PerformSelect() +28
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +73
   Telerik.Web.UI.GridTableView.DataBind() +354
   Telerik.Web.UI.GridSortCommandEventArgs.ExecuteCommand(Object source) +326
   Telerik.Web.UI.RadGrid.OnBubbleEvent(Object source, EventArgs e) +191
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   Telerik.Web.UI.GridItem.OnBubbleEvent(Object source, EventArgs e) +61
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   Telerik.Web.UI.GridItem.OnBubbleEvent(Object source, EventArgs e) +165
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +118
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +135
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

How do I get around this issue ?

This issue arises if I try to bind to IItemInterface instances and sort on the ItemNumber column, where IItemInterface is declared as follows:

    public class Item : IItemInterface
    {
        public string Name { get; set; }
        public string ItemNumber { get; set; }
    }

    public interface IBase
    {
        string ItemNumber { get; set; }
    }

    public interface IItemInterface : IBase
    {
        string Name { get; set; }
    }

Thanks for your help,

/Dennis Riis

[Nikita Gourme]

Did you get the error when you assign the same collection as data source for plain MS GridView?This can be a good reference point whether the exception is raised from Telerik code base or is due to the ASP.NET binding logic in general. Keep me updated, I will try to assist you address it.

Nikita