ParallelEnumerable Class
Definition
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

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>) 
Determines whether a parallel sequence contains any elements. 
Any<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>) 
Determines in parallel whether any element of a sequence satisfies a condition. 
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 nongeneric 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) 
Determines in parallel whether a sequence contains a specified element by using the default equality comparer. 
Contains<TSource>(ParallelQuery<TSource>, TSource, IEqualityComparer<TSource>) 
Determines in parallel whether a sequence contains a specified element by using a specified IEqualityComparer<T>. 
Count<TSource>(ParallelQuery<TSource>) 
Returns the number of elements in a parallel sequence. 
Count<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>) 
Returns a number that represents how many elements in the specified parallel sequence satisfy a condition. 
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. 
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. 
Distinct<TSource>(ParallelQuery<TSource>) 
Returns distinct elements from a parallel sequence by using the default equality comparer to compare values. 
Distinct<TSource>(ParallelQuery<TSource>, IEqualityComparer<TSource>) 
Returns distinct elements from a parallel sequence by using a specified IEqualityComparer<T> 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>) 
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>, 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>, ParallelQuery<TSource>) 
Produces the set difference of two parallel sequences by using the default equality comparer to compare values. 
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. 
First<TSource>(ParallelQuery<TSource>) 
Returns the first element of a parallel sequence. 
First<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>) 
Returns the first element in a parallel sequence that satisfies a specified condition. 
FirstOrDefault<TSource>(ParallelQuery<TSource>) 
Returns the first element of a parallel sequence, or a default value if the sequence contains no elements. 
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. 
ForAll<TSource>(ParallelQuery<TSource>, Action<TSource>) 
Invokes in parallel the specified action for each element in the 
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,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>(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,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,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,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>(ParallelQuery<TSource>, Func<TSource,TKey>) 
Groups in parallel the elements of a sequence according to a specified key selector function. 
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>. 
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>, 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>, 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. 
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. 
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>, 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>, ParallelQuery<TSource>) 
Produces the set intersection of two parallel sequences by using the default equality comparer to compare values. 
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. 
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>, 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>, 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. 
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. 
Last<TSource>(ParallelQuery<TSource>) 
Returns the last element of a parallel sequence. 
Last<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>) 
Returns the last element of a parallel sequence that satisfies a specified condition. 
LastOrDefault<TSource>(ParallelQuery<TSource>) 
Returns the last element of a parallel sequence, or a default value if the sequence contains no elements. 
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. 
LongCount<TSource>(ParallelQuery<TSource>) 
Returns an Int64 that represents the total number of elements in a parallel sequence. 
LongCount<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>) 
Returns an Int64 that represents how many elements in a parallel sequence satisfy a condition. 
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>) 
Returns the maximum value in a parallel sequence of values. 
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. 
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>) 
Returns the minimum value in a parallel sequence of values. 
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. 
OfType<TResult>(ParallelQuery) 
Filters the elements of a ParallelQuery based on a specified type. 
OrderBy<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) 
Sorts in parallel the elements of a sequence in ascending order according to a key. 
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. 
OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) 
Sorts in parallel the elements of a sequence in descending 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. 
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>) 
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>, 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>, ParallelQuery<TSource>) 
Determines whether two parallel sequences are equal by comparing the elements by using the default equality comparer for their type. 
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}. 
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. 
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. 
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. 
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. 
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>) 
Performs in parallel a subsequent ordering of the elements in a sequence in ascending order according to a key. 
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. 
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. 
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. 
ToArray<TSource>(ParallelQuery<TSource>) 
Creates an array from a ParallelQuery<TSource>. 
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,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>(ParallelQuery<TSource>, Func<TSource,TKey>) 
Creates a Dictionary<TKey,TValue> from a ParallelQuery<TSource> according to a specified key selector function. 
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. 
ToList<TSource>(ParallelQuery<TSource>) 
Creates a List<T> from an ParallelQuery<TSource>. 
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,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>(ParallelQuery<TSource>, Func<TSource,TKey>) 
Creates an ILookup<TKey,TElement> from a ParallelQuery<TSource> according to a specified key selector function. 
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. 
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>, 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>, ParallelQuery<TSource>) 
Produces the set union of two parallel sequences by using the default equality comparer. 
Union<TSource>(ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>) 
Produces the set union of two parallel sequences by using a specified IEqualityComparer{T}. 
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. 