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Enumerable Members

.NET Framework 3.5

Provides a set of static (Shared in Visual Basic) methods for querying objects that implement IEnumerable<T>.

The Enumerable type exposes the following members.

	Name	Description
	Aggregate	Overloaded. Applies an accumulator function over a sequence.
	All<TSource>	Determines whether all elements of a sequence satisfy a condition.
	Any	Overloaded. Determines whether any element of a sequence exists or satisfies a condition.
	AsEnumerable<TSource>	Returns the input typed as IEnumerable<T>.
	Average	Overloaded. Computes the average of a sequence of numeric values.
	Cast<TResult>	Converts the elements of an IEnumerable to the specified type.
	Concat<TSource>	Concatenates two sequences.
	Contains	Overloaded. Determines whether a sequence contains a specified element.
	Count	Overloaded. Returns the number of elements in a sequence.
	DefaultIfEmpty	Overloaded. Returns the elements of an IEnumerable<T>, or a default valued singleton collection if the sequence is empty.
	Distinct	Overloaded. Returns distinct elements from a sequence.
	ElementAt<TSource>	Returns the element at a specified index in a sequence.
	ElementAtOrDefault<TSource>	Returns the element at a specified index in a sequence or a default value if the index is out of range.
	Empty<TResult>	Returns an empty IEnumerable<T> that has the specified type argument.
	Except	Overloaded. Produces the set difference of two sequences.
	First	Overloaded. Returns the first element of a sequence.
	FirstOrDefault	Overloaded. Returns the first element of a sequence, or a default value if no element is found.
	GroupBy	Overloaded. Groups the elements of a sequence.
	GroupJoin	Overloaded. Correlates the elements of two sequences based on key equality, and groups the results.
	Intersect	Overloaded. Produces the set intersection of two sequences.
	Join	Overloaded. Correlates the elements of two sequences based on matching keys.
	Last	Overloaded. Returns the last element of a sequence.
	LastOrDefault	Overloaded. Returns the last element of a sequence, or a default value if no element is found.
	LongCount	Overloaded. Returns an Int64 that represents the number of elements in a sequence.
	Max	Overloaded. Returns the maximum value in a sequence of values.
	Min	Overloaded. Returns the minimum value in a sequence of values.
	OfType<TResult>	Filters the elements of an IEnumerable based on a specified type.
	OrderBy	Overloaded. Sorts the elements of a sequence in ascending order.
	OrderByDescending	Overloaded. Sorts the elements of a sequence in descending order.
	Range	Generates a sequence of integral numbers within a specified range.
	Repeat<TResult>	Generates a sequence that contains one repeated value.
	Reverse<TSource>	Inverts the order of the elements in a sequence.
	Select	Overloaded. Projects each element of a sequence into a new form.
	SelectMany	Overloaded. Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
	SequenceEqual	Overloaded. Determines whether two sequences are equal according to an equality comparer.
	Single	Overloaded. Returns a single, specific element of a sequence of values.
	SingleOrDefault	Overloaded. Returns a single, specific element of a sequence of values, or a default value if no such element is found.
	Skip<TSource>	Bypasses a specified number of elements in a sequence and then returns the remaining elements.
	SkipWhile	Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.
	Sum	Overloaded. Computes the sum of a sequence of numeric values.
	Take<TSource>	Returns a specified number of contiguous elements from the start of a sequence.
	TakeWhile	Overloaded. Returns elements from a sequence as long as a specified condition is true, and then skips the remaining elements.
	ThenBy	Overloaded. Performs a subsequent ordering of the elements in a sequence in ascending order.
	ThenByDescending	Overloaded. Performs a subsequent ordering of the elements in a sequence in descending order.
	ToArray<TSource>	Creates an array from a IEnumerable<T>.
	ToDictionary	Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T>.
	ToList<TSource>	Creates a List<T> from an IEnumerable<T>.
	ToLookup	Overloaded. Creates a generic Lookup<TKey, TElement> from an IEnumerable<T>.
	Union	Overloaded. Produces the set union of two sequences.
	Where	Overloaded. Filters a sequence of values based on a predicate.

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Reference

Enumerable Class

System.Linq Namespace

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