Проблема конвертации слоя в графику

Question

Здравствуйте!
Возникает ошибка при попытке конвертации слоя в графику:

public IRecordSet GetRecordSet(string file_path, string shapeName)
        {
            IWorkspaceFactory pWSF = (IWorkspaceFactory)
               _serverContext.CreateObject("esriDataSourcesFile.ShapefileWorkspaceFactory");

            IFeatureWorkspace pFWS = (IFeatureWorkspace)pWSF.OpenFromFile(file_path, 0);

            IFeatureClass pFCl = pFWS.OpenFeatureClass(shapeName);
            ITable table = (ITable)pFCl;

            IRecordSetInit esriRecsInit = (IRecordSetInit)
               _serverContext.CreateObject("esriGeoDatabase.RecordSet");
            esriRecsInit.SetSourceTable(table, (IQueryFilter)_serverContext.CreateObject("esriGeoDatabase.QueryFilter"));
            IRecordSet pRecSet = (IRecordSet)esriRecsInit;

            return pRecSet;
        }

public void Test()
{
                           ESRI.ArcGIS.Geodatabase.IRecordSet rs = layerUtility.GetRecordSet("C:\\shps\\", "shape_file.shp");

                                ESRI.ArcGIS.ADF.ArcGISServer.RecordSet rtn =
                                    (ESRI.ArcGIS.ADF.ArcGISServer.RecordSet)
                                    ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ComObjectToValueObject
                                    (rs, _serverContext, typeof(ESRI.ArcGIS.ADF.ArcGISServer.RecordSet));
                                 
                                string shape = "Shape";
                                string fid = "FID";
                                FeatureGraphicsLayer fglayer =

//здесь ошибка: В столбце "Shape" не допускаются пустые значения.                                 ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.ToFeatureGraphicsLayer(rtn, 10000, ref shape, ref fid);

}

В чем дело не подскажите? Там нет пустых значений это 100%!
Спасибо!