public QueryPaggedBase <TItem, TResult> AddSorting(Expression <Func <TItem, object> > memberSelector, bool desc = false)
{
if (_sorting == null)
{
_sorting = new SortingCollection();
}
_sorting.Add(SortingDescriptor.Get(memberSelector, desc));
return(this);
}
void IQueryVisitor.Visit(SortingDescriptor sd)
{
Validator.ValidatePropertyName <T>(sd.Field);
string ordAsc = _isFirstItem ? "OrderBy" : "ThenBy";
string ordDesc = _isFirstItem ? "OrderByDescending" : "ThenByDescending";
_isFirstItem = false;
Expression propertyAccess = LinqExpressionHelper.GetMemberChainExpression(_param, sd.Field);
LambdaExpression orderByExp = Expression.Lambda(propertyAccess, _param);
MethodCallExpression resultExp = Expression.Call(typeof(Queryable), sd.Desc ? ordDesc : ordAsc, new[] { _t, propertyAccess.Type },
_query.Expression, Expression.Quote(orderByExp));
_query = _query.Provider.CreateQuery <T>(resultExp);
}
void IQueryVisitor.Visit(SortingDescriptor fd)
{
_bld.AppendFormat("[{0}]{1}", fd.Field, fd.Desc ? " desc":string.Empty);
}
void IQueryVisitor.Visit(SortingDescriptor fd)
{
_bld.AppendFormat("[{0}]{1}", fd.Field, fd.Desc ? " desc":string.Empty);
}
