public ProxyCollection <object> Distinct(string field)
{
ExpressionFactory factory = new ExpressionFactory(_context, typeof(T));
Func <object, object> func = factory.BuildValueExpression(field);
IEnumerable <object> c = _collection.Select(val => func(val)).Distinct();
return(new ProxyCollection <object>(c, _context));
}
public ProxyCollection <T> OrderBy(string field, bool desc)
{
ExpressionFactory factory = new ExpressionFactory(_context, typeof(T));
Func <object, object> func = factory.BuildValueExpression(field);
IEnumerable <T> c;
if (!desc)
{
c = _collection.OrderBy(val => func(val));
}
else
{
c = _collection.OrderByDescending(val => func(val));
}
return(new ProxyCollection <T>(c, _context));
}