ParallelEnumerable Class

Definition

Namespace:

System.Linq

Assembly:

System.Linq.Parallel.dll

Source:

ParallelEnumerable.cs

Provides a set of methods for querying objects that implement ParallelQuery{TSource}. This is the parallel equivalent of Enumerable.

public ref class ParallelEnumerable abstract sealed

public static class ParallelEnumerable

type ParallelEnumerable = class

Public Module ParallelEnumerable

Inheritance

Object

ParallelEnumerable

Methods

Aggregate<TSource,TAccumulate,TResult>(ParallelQuery<TSource>, Func<TAccumulate>, Func<TAccumulate,TSource,TAccumulate>, Func<TAccumulate, TAccumulate,TAccumulate>, Func<TAccumulate,TResult>)	Applies in parallel an accumulator function over a sequence. This overload is not available in the sequential implementation.
Aggregate<TSource,TAccumulate,TResult>(ParallelQuery<TSource>, TAccumulate, Func<TAccumulate,TSource,TAccumulate>, Func<TAccumulate, TAccumulate,TAccumulate>, Func<TAccumulate,TResult>)	Applies in parallel an accumulator function over a sequence. This overload is not available in the sequential implementation.
Aggregate<TSource,TAccumulate,TResult>(ParallelQuery<TSource>, TAccumulate, Func<TAccumulate,TSource,TAccumulate>, Func<TAccumulate,TResult>)	Applies in parallel an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.
Aggregate<TSource,TAccumulate>(ParallelQuery<TSource>, TAccumulate, Func<TAccumulate,TSource,TAccumulate>)	Applies in parallel an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
Aggregate<TSource>(ParallelQuery<TSource>, Func<TSource,TSource,TSource>)	Applies in parallel an accumulator function over a sequence.
All<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Determines in parallel whether all elements of a sequence satisfy a condition.
Any<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Determines in parallel whether any element of a sequence satisfies a condition.
Any<TSource>(ParallelQuery<TSource>)	Determines whether a parallel sequence contains any elements.
AsEnumerable<TSource>(ParallelQuery<TSource>)	Converts a ParallelQuery<TSource> into an IEnumerable<T> to force sequential evaluation of the query.
AsOrdered(ParallelQuery)	Enables treatment of a data source as if it were ordered, overriding the default of unordered. AsOrdered may only be invoked on non-generic sequences returned by AsParallel, ParallelEnumerable.Range, and ParallelEnumerable.Repeat.
AsOrdered<TSource>(ParallelQuery<TSource>)	Enables treatment of a data source as if it were ordered, overriding the default of unordered. AsOrdered may only be invoked on generic sequences returned by AsParallel, ParallelEnumerable.Range, and ParallelEnumerable.Repeat.
AsParallel(IEnumerable)	Enables parallelization of a query.
AsParallel<TSource>(IEnumerable<TSource>)	Enables parallelization of a query.
AsParallel<TSource>(Partitioner<TSource>)	Enables parallelization of a query, as sourced by a custom partitioner that is responsible for splitting the input sequence into partitions.
AsSequential<TSource>(ParallelQuery<TSource>)	Converts a ParallelQuery<TSource> into an IEnumerable<T> to force sequential evaluation of the query.
AsUnordered<TSource>(ParallelQuery<TSource>)	Allows an intermediate query to be treated as if no ordering is implied among the elements.
Average(ParallelQuery<Decimal>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Double>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Int32>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Int64>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Decimal>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Double>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Int32>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Int64>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Single>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Single>)	Computes in parallel the average of a sequence of values.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Cast<TResult>(ParallelQuery)	Converts the elements of a ParallelQuery to the specified type.
Concat<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>)	Obsolete. This Concat overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Concat<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>)	Concatenates two parallel sequences.
Contains<TSource>(ParallelQuery<TSource>, TSource, IEqualityComparer<TSource>)	Determines in parallel whether a sequence contains a specified element by using a specified IEqualityComparer<T>.
Contains<TSource>(ParallelQuery<TSource>, TSource)	Determines in parallel whether a sequence contains a specified element by using the default equality comparer.
Count<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns a number that represents how many elements in the specified parallel sequence satisfy a condition.
Count<TSource>(ParallelQuery<TSource>)	Returns the number of elements in a parallel sequence.
DefaultIfEmpty<TSource>(ParallelQuery<TSource>, TSource)	Returns the elements of the specified parallel sequence or the specified value in a singleton collection if the sequence is empty.
DefaultIfEmpty<TSource>(ParallelQuery<TSource>)	Returns the elements of the specified parallel sequence or the type parameter's default value in a singleton collection if the sequence is empty.
Distinct<TSource>(ParallelQuery<TSource>, IEqualityComparer<TSource>)	Returns distinct elements from a parallel sequence by using a specified IEqualityComparer<T> to compare values.
Distinct<TSource>(ParallelQuery<TSource>)	Returns distinct elements from a parallel sequence by using the default equality comparer to compare values.
ElementAt<TSource>(ParallelQuery<TSource>, Int32)	Returns the element at a specified index in a parallel sequence.
ElementAtOrDefault<TSource>(ParallelQuery<TSource>, Int32)	Returns the element at a specified index in a parallel sequence or a default value if the index is out of range.
Empty<TResult>()	Returns an empty ParallelQuery{TResult} that has the specified type argument.
Except<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)	Obsolete. This Except overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Except<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>)	Obsolete. This Except overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Except<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>)	Produces the set difference of two parallel sequences by using the specified IEqualityComparer<T> to compare values.
Except<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>)	Produces the set difference of two parallel sequences by using the default equality comparer to compare values.
First<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the first element in a parallel sequence that satisfies a specified condition.
First<TSource>(ParallelQuery<TSource>)	Returns the first element of a parallel sequence.
FirstOrDefault<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the first element of the parallel sequence that satisfies a condition or a default value if no such element is found.
FirstOrDefault<TSource>(ParallelQuery<TSource>)	Returns the first element of a parallel sequence, or a default value if the sequence contains no elements.
ForAll<TSource>(ParallelQuery<TSource>, Action<TSource>)	Invokes in parallel the specified action for each element in the source.
GroupBy<TSource,TKey,TElement,TResult>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, Func<TKey,IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>)	Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.
GroupBy<TSource,TKey,TElement,TResult>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, Func<TKey,IEnumerable<TElement>,TResult>)	Groups in parallel the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function.
GroupBy<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>)	Groups in parallel the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function.
GroupBy<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>)	Groups in parallel the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function.
GroupBy<TSource,TKey,TResult>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TKey,IEnumerable<TSource>,TResult>, IEqualityComparer<TKey>)	Groups in parallel the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer.
GroupBy<TSource,TKey,TResult>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TKey,IEnumerable<TSource>,TResult>)	Groups in parallel the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.
GroupBy<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>)	Groups in parallel the elements of a sequence according to a specified key selector function and compares the keys by using a specified IComparer<T>.
GroupBy<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)	Groups in parallel the elements of a sequence according to a specified key selector function.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)	Obsolete. This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)	Obsolete. This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)	Correlates in parallel the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)	Correlates in parallel the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.
Intersect<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)	Obsolete. This Intersect overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Intersect<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>)	Obsolete. This Intersect overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Intersect<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>)	Produces the set intersection of two parallel sequences by using the specified IEqualityComparer{T} to compare values.
Intersect<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>)	Produces the set intersection of two parallel sequences by using the default equality comparer to compare values.
Join<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>, IEqualityComparer<TKey>)	Obsolete. This Join overload should never be called. This method is marked as obsolete and always throws NotSupportedException when invoked.
Join<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>)	Obsolete. This Join overload should never be called. This method is marked as obsolete and always throws NotSupportedException when invoked.
Join<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>, IEqualityComparer<TKey>)	Correlates in parallel the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.
Join<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>)	Correlates in parallel the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.
Last<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the last element of a parallel sequence that satisfies a specified condition.
Last<TSource>(ParallelQuery<TSource>)	Returns the last element of a parallel sequence.
LastOrDefault<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the last element of a parallel sequence that satisfies a condition, or a default value if no such element is found.
LastOrDefault<TSource>(ParallelQuery<TSource>)	Returns the last element of a parallel sequence, or a default value if the sequence contains no elements.
LongCount<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns an Int64 that represents how many elements in a parallel sequence satisfy a condition.
LongCount<TSource>(ParallelQuery<TSource>)	Returns an Int64 that represents the total number of elements in a parallel sequence.
Max(ParallelQuery<Decimal>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Double>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Int32>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Int64>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Nullable<Decimal>>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Nullable<Double>>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Nullable<Int32>>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Nullable<Int64>>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Nullable<Single>>)	Returns the maximum value in a parallel sequence of values.
Max(ParallelQuery<Single>)	Returns the maximum value in a parallel sequence of values.
Max<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,TResult>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)	Invokes in parallel a transform function on each element of a sequence and returns the maximum value.
Max<TSource>(ParallelQuery<TSource>)	Returns the maximum value in a parallel sequence of values.
Min(ParallelQuery<Decimal>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Double>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Int32>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Int64>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Nullable<Decimal>>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Nullable<Double>>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Nullable<Int32>>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Nullable<Int64>>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Nullable<Single>>)	Returns the minimum value in a parallel sequence of values.
Min(ParallelQuery<Single>)	Returns the minimum value in a parallel sequence of values.
Min<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,TResult>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)	Invokes in parallel a transform function on each element of a sequence and returns the minimum value.
Min<TSource>(ParallelQuery<TSource>)	Returns the minimum value in a parallel sequence of values.
OfType<TResult>(ParallelQuery)	Filters the elements of a ParallelQuery based on a specified type.
OrderBy<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)	Sorts in parallel the elements of a sequence in ascending order by using a specified comparer.
OrderBy<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)	Sorts in parallel the elements of a sequence in ascending order according to a key.
OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)	Sorts the elements of a sequence in descending order by using a specified comparer.
OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)	Sorts in parallel the elements of a sequence in descending order according to a key.
Range(Int32, Int32)	Generates a parallel sequence of integral numbers within a specified range.
Repeat<TResult>(TResult, Int32)	Generates a parallel sequence that contains one repeated value.
Reverse<TSource>(ParallelQuery<TSource>)	Inverts the order of the elements in a parallel sequence.
Select<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,TResult>)	Projects in parallel each element of a sequence into a new form by incorporating the element's index.
Select<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,TResult>)	Projects in parallel each element of a sequence into a new form.
SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>)	Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein.
SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>)	Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element.
SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TResult>>)	Projects in parallel each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TResult>>)	Projects in parallel each element of a sequence to an IEnumerable<T>, and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.
SequenceEqual<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)	Obsolete. This SequenceEqual overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
SequenceEqual<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>)	Obsolete. This SequenceEqual overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
SequenceEqual<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>)	Determines whether two parallel sequences are equal by comparing their elements by using a specified IEqualityComparer{T}.
SequenceEqual<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>)	Determines whether two parallel sequences are equal by comparing the elements by using the default equality comparer for their type.
Single<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the only element of a parallel sequence that satisfies a specified condition, and throws an exception if more than one such element exists.
Single<TSource>(ParallelQuery<TSource>)	Returns the only element of a parallel sequence, and throws an exception if there is not exactly one element in the sequence.
SingleOrDefault<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns the only element of a parallel sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.
SingleOrDefault<TSource>(ParallelQuery<TSource>)	Returns the only element of a parallel sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.
Skip<TSource>(ParallelQuery<TSource>, Int32)	Bypasses a specified number of elements in a parallel sequence and then returns the remaining elements.
SkipWhile<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Bypasses elements in a parallel sequence as long as a specified condition is true and then returns the remaining elements.
SkipWhile<TSource>(ParallelQuery<TSource>, Func<TSource,Int32,Boolean>)	Bypasses elements in a parallel sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.
Sum(ParallelQuery<Decimal>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Double>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Int32>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Int64>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Nullable<Decimal>>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Nullable<Double>>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Nullable<Int32>>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Nullable<Int64>>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Nullable<Single>>)	Computes in parallel the sum of a sequence of values.
Sum(ParallelQuery<Single>)	Computes in parallel the sum of a sequence of values.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)	Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Take<TSource>(ParallelQuery<TSource>, Int32)	Returns a specified number of contiguous elements from the start of a parallel sequence.
TakeWhile<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Returns elements from a parallel sequence as long as a specified condition is true.
TakeWhile<TSource>(ParallelQuery<TSource>, Func<TSource,Int32,Boolean>)	Returns elements from a parallel sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function.
ThenBy<TSource,TKey>(OrderedParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)	Performs in parallel a subsequent ordering of the elements in a sequence in ascending order by using a specified comparer.
ThenBy<TSource,TKey>(OrderedParallelQuery<TSource>, Func<TSource,TKey>)	Performs in parallel a subsequent ordering of the elements in a sequence in ascending order according to a key.
ThenByDescending<TSource,TKey>(OrderedParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)	Performs in parallel a subsequent ordering of the elements in a sequence in descending order by using a specified comparer.
ThenByDescending<TSource,TKey>(OrderedParallelQuery<TSource>, Func<TSource,TKey>)	Performs in parallel a subsequent ordering of the elements in a sequence in descending order, according to a key.
ToArray<TSource>(ParallelQuery<TSource>)	Creates an array from a ParallelQuery<TSource>.
ToDictionary<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>)	Creates a Dictionary<TKey,TValue> from a ParallelQuery<TSource> according to a specified key selector function, a comparer, and an element selector function.
ToDictionary<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>)	Creates a Dictionary<TKey,TValue> from a ParallelQuery<TSource> according to specified key selector and element selector functions.
ToDictionary<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>)	Creates a Dictionary<TKey,TValue> from a ParallelQuery<TSource> according to a specified key selector function and key comparer.
ToDictionary<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)	Creates a Dictionary<TKey,TValue> from a ParallelQuery<TSource> according to a specified key selector function.
ToList<TSource>(ParallelQuery<TSource>)	Creates a List<T> from an ParallelQuery<TSource>.
ToLookup<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>)	Creates an ILookup<TKey,TElement> from a ParallelQuery<TSource> according to a specified key selector function, a comparer and an element selector function.
ToLookup<TSource,TKey,TElement>(ParallelQuery<TSource>, Func<TSource,TKey>, Func<TSource,TElement>)	Creates an ILookup<TKey,TElement> from a ParallelQuery<TSource> according to specified key selector and element selector functions.
ToLookup<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>)	Creates an ILookup<TKey,TElement> from a ParallelQuery<TSource> according to a specified key selector function and key comparer.
ToLookup<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)	Creates an ILookup<TKey,TElement> from a ParallelQuery<TSource> according to a specified key selector function.
Union<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)	Obsolete. This Union overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Union<TSource>(ParallelQuery<TSource>, IEnumerable<TSource>)	Obsolete. This Union overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
Union<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>)	Produces the set union of two parallel sequences by using a specified IEqualityComparer{T}.
Union<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>)	Produces the set union of two parallel sequences by using the default equality comparer.
Where<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)	Filters in parallel a sequence of values based on a predicate.
Where<TSource>(ParallelQuery<TSource>, Func<TSource,Int32,Boolean>)	Filters in parallel a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.
WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken)	Sets the CancellationToken to associate with the query.
WithDegreeOfParallelism<TSource>(ParallelQuery<TSource>, Int32)	Sets the degree of parallelism to use in a query. Degree of parallelism is the maximum number of concurrently executing tasks that will be used to process the query.
WithExecutionMode<TSource>(ParallelQuery<TSource>, ParallelExecutionMode)	Sets the execution mode of the query.
WithMergeOptions<TSource>(ParallelQuery<TSource>, ParallelMergeOptions)	Sets the merge options for this query, which specify how the query will buffer output.
Zip<TFirst,TSecond,TResult>(ParallelQuery<TFirst>, IEnumerable<TSecond>, Func<TFirst,TSecond,TResult>)	Obsolete. This Zip overload should never be called. This method is marked as obsolete and always throws NotSupportedException when invoked.
Zip<TFirst,TSecond,TResult>(ParallelQuery<TFirst>, ParallelQuery<TSecond>, Func<TFirst,TSecond,TResult>)	Merges in parallel two sequences by using the specified predicate function.

See also

• Parallel LINQ (PLINQ)