internal static string GetSortDirectionString(System.Web.Helpers.SortDirection sortDir)
{
return((sortDir == System.Web.Helpers.SortDirection.Ascending) ? "ASC" : "DESC");
}
protected static IQueryable <T> SortGenericExpression <TProperty>(IQueryable <T> data, Expression body,
ParameterExpression param, System.Web.Helpers.SortDirection sortDirection)
{
Debug.Assert(data != null);
Debug.Assert(body != null);
Debug.Assert(param != null);
// The IQueryable<dynamic> data source is cast as an IQueryable<object> at runtime. We must cast
// this to an IQueryable<TElement> so that the reflection done by the LINQ expressions will work.
//IQueryable<T_> data2 = data.Cast<T_>();
Expression <Func <T, TProperty> > lambda = Expression.Lambda <Func <T, TProperty> >(body, param);
if (sortDirection == System.Web.Helpers.SortDirection.Descending)
{
return(data.OrderByDescending(lambda));
}
else
{
return(data.OrderBy(lambda));
}
}
