GroupBy< TSource, TKey, TElement >() [2/2]

static IQueryable< IGrouping< TKey, TElement > > System.Linq.Queryable.GroupBy< TSource, TKey, TElement > ( this IQueryable< TSource > source, Expression< Func< TSource, TKey > > keySelector, Expression< Func< TSource, TElement > > elementSelector, IEqualityComparer< TKey >? comparer )

inlinestatic

Definition at line 537 of file Queryable.cs.

    {
        if (source == null)
        {
            throw Error.ArgumentNull("source");
        }
        if (keySelector == null)
        {
            throw Error.ArgumentNull("keySelector");
        }
        if (elementSelector == null)
        {
            throw Error.ArgumentNull("elementSelector");
        }
        return source.Provider.CreateQuery<IGrouping<TKey, TElement>>(Expression.Call(null, CachedReflectionInfo.GroupBy_TSource_TKey_TElement_4(typeof(TSource), typeof(TKey), typeof(TElement)), source.Expression, Expression.Quote(keySelector), Expression.Quote(elementSelector), Expression.Constant(comparer, typeof(IEqualityComparer<TKey>))));
    }

References System.Linq.Error.ArgumentNull(), System.Linq.Expressions.Expression< TDelegate >.Call(), System.comparer, System.Linq.Expressions.Expression< TDelegate >.Constant(), System.Linq.elementSelector, System.Linq.CachedReflectionInfo.GroupBy_TSource_TKey_TElement_4(), System.Linq.keySelector, System.Linq.Expressions.Expression< TDelegate >.Quote(), and System.Linq.source.