datatable iqueryable c# linq
DataTable dataTable = GetDataTable();
var importdata = from row in dataTable.AsEnumerable()
select new ImportRow()
{
GroupExtID = row.Field<int>(SubjectsImportStructure.PID),
ExtID = row.Field<int>(SubjectsImportStructure.ID),
Condition = row.Field<int>(SubjectsImportStructure.Condition),
IC = row.Field<string>(SubjectsImportStructure.IC),
RC = row.Field<string>(SubjectsImportStructure.RC),
};
IQueryable<IImportRow> data = importdata as IQueryable<IImportRow>;