Enumerable Class

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

Inheritance Hierarchy

System.Object
  System.Linq.Enumerable

Namespace:  System.Linq
Assembly:  System.Core (in System.Core.dll)

Syntax

'Declaration
<ExtensionAttribute> _
Public NotInheritable Class Enumerable
public static class Enumerable

The Enumerable type exposes the following members.

Methods

  Name Description
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Aggregate<TSource>(IEnumerable<TSource>, Func<TSource, TSource, TSource>) Applies an accumulator function over a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Aggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>) Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Aggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>) Applies 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 All<TSource> Determines whether all elements of a sequence satisfy a condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Any<TSource>(IEnumerable<TSource>) Determines whether a sequence contains any elements.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Any<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Determines whether any element of a sequence satisfies a condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 AsEnumerable<TSource> Returns the input typed as IEnumerable<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Decimal>) Computes the average of a sequence of Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Nullable<Decimal>>) Computes the average of a sequence of nullable Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Double>) Computes the average of a sequence of Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Nullable<Double>>) Computes the average of a sequence of nullable Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Int32>) Computes the average of a sequence of Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Nullable<Int32>>) Computes the average of a sequence of nullable Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Int64>) Computes the average of a sequence of Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Nullable<Int64>>) Computes the average of a sequence of nullable Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Nullable<Single>>) Computes the average of a sequence of nullable Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average(IEnumerable<Single>) Computes the average of a sequence of Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Average<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Cast<TResult> Converts the elements of an IEnumerable to the specified type.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Concat<TSource> Concatenates two sequences.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Contains<TSource>(IEnumerable<TSource>, TSource) Determines whether a sequence contains a specified element by using the default equality comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Contains<TSource>(IEnumerable<TSource>, TSource, IEqualityComparer<TSource>) Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Count<TSource>(IEnumerable<TSource>) Returns the number of elements in a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Count<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns a number that represents how many elements in the specified sequence satisfy a condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 DefaultIfEmpty<TSource>(IEnumerable<TSource>) Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 DefaultIfEmpty<TSource>(IEnumerable<TSource>, TSource) Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Distinct<TSource>(IEnumerable<TSource>) Returns distinct elements from a sequence by using the default equality comparer to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Distinct<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>) Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ElementAt<TSource> Returns the element at a specified index in a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ElementAtOrDefault<TSource> Returns the element at a specified index in a sequence or a default value if the index is out of range.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Empty<TResult> Returns an empty IEnumerable<T> that has the specified type argument.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Produces the set difference of two sequences by using the default equality comparer to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 First<TSource>(IEnumerable<TSource>) Returns the first element of a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 First<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the first element in a sequence that satisfies a specified condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 FirstOrDefault<TSource>(IEnumerable<TSource>) Returns the first element of a sequence, or a default value if the sequence contains no elements.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 FirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) Groups the elements of a sequence according to a specified key selector function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, TResult>) Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) Groups 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, 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. The keys are compared by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TElement, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, Func<TKey, IEnumerable<TElement>, TResult>) Groups 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupBy<TSource, TKey, TElement, TResult>(IEnumerable<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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>) Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>) Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Produces the set intersection of two sequences by using the default equality comparer to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Join<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>) Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Join<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>, IEqualityComparer<TKey>) Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Last<TSource>(IEnumerable<TSource>) Returns the last element of a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Last<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the last element of a sequence that satisfies a specified condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 LastOrDefault<TSource>(IEnumerable<TSource>) Returns the last element of a sequence, or a default value if the sequence contains no elements.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 LastOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 LongCount<TSource>(IEnumerable<TSource>) Returns an Int64 that represents the total number of elements in a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 LongCount<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns an Int64 that represents how many elements in a sequence satisfy a condition.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Decimal>) Returns the maximum value in a sequence of Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Nullable<Decimal>>) Returns the maximum value in a sequence of nullable Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Double>) Returns the maximum value in a sequence of Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Nullable<Double>>) Returns the maximum value in a sequence of nullable Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Int32>) Returns the maximum value in a sequence of Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Nullable<Int32>>) Returns the maximum value in a sequence of nullable Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Int64>) Returns the maximum value in a sequence of Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Nullable<Int64>>) Returns the maximum value in a sequence of nullable Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Nullable<Single>>) Returns the maximum value in a sequence of nullable Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max(IEnumerable<Single>) Returns the maximum value in a sequence of Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>) Returns the maximum value in a generic sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Invokes a transform function on each element of a sequence and returns the maximum Decimal value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Invokes a transform function on each element of a sequence and returns the maximum Double value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Invokes a transform function on each element of a sequence and returns the maximum Int32 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Invokes a transform function on each element of a sequence and returns the maximum Int64 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Invokes a transform function on each element of a sequence and returns the maximum Single value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Max<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Decimal>) Returns the minimum value in a sequence of Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Nullable<Decimal>>) Returns the minimum value in a sequence of nullable Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Double>) Returns the minimum value in a sequence of Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Nullable<Double>>) Returns the minimum value in a sequence of nullable Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Int32>) Returns the minimum value in a sequence of Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Nullable<Int32>>) Returns the minimum value in a sequence of nullable Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Int64>) Returns the minimum value in a sequence of Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Nullable<Int64>>) Returns the minimum value in a sequence of nullable Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Nullable<Single>>) Returns the minimum value in a sequence of nullable Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min(IEnumerable<Single>) Returns the minimum value in a sequence of Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>) Returns the minimum value in a generic sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Invokes a transform function on each element of a sequence and returns the minimum Decimal value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Invokes a transform function on each element of a sequence and returns the minimum Double value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Invokes a transform function on each element of a sequence and returns the minimum Int32 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Invokes a transform function on each element of a sequence and returns the minimum Int64 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Invokes a transform function on each element of a sequence and returns the minimum nullable Double value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Invokes a transform function on each element of a sequence and returns the minimum nullable Single value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Invokes a transform function on each element of a sequence and returns the minimum Single value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Min<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 OfType<TResult> Filters the elements of an IEnumerable based on a specified type.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 OrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) Sorts the elements of a sequence in ascending order according to a key.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 OrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) Sorts the elements of a sequence in ascending order by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 OrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) Sorts the elements of a sequence in descending order according to a key.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 OrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) Sorts the elements of a sequence in descending order by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Range Generates a sequence of integral numbers within a specified range.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Repeat<TResult> Generates a sequence that contains one repeated value.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Reverse<TSource> Inverts the order of the elements in a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Select<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>) Projects each element of a sequence into a new form.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Select<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, TResult>) Projects each element of a sequence into a new form by incorporating the element's index.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, IEnumerable<TResult>>) Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, IEnumerable<TResult>>) Projects 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SelectMany<TSource, TCollection, TResult>(IEnumerable<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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SelectMany<TSource, TCollection, TResult>(IEnumerable<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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Single<TSource>(IEnumerable<TSource>) Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Single<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SingleOrDefault<TSource>(IEnumerable<TSource>) Returns the only element of a 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SingleOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns the only element of a 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Skip<TSource> Bypasses a specified number of elements in a sequence and then returns the remaining elements.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) Bypasses elements in a 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.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Decimal>) Computes the sum of a sequence of Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Nullable<Decimal>>) Computes the sum of a sequence of nullable Decimal values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Double>) Computes the sum of a sequence of Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Nullable<Double>>) Computes the sum of a sequence of nullable Double values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Int32>) Computes the sum of a sequence of Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Nullable<Int32>>) Computes the sum of a sequence of nullable Int32 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Int64>) Computes the sum of a sequence of Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Nullable<Int64>>) Computes the sum of a sequence of nullable Int64 values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Nullable<Single>>) Computes the sum of a sequence of nullable Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum(IEnumerable<Single>) Computes the sum of a sequence of Single values.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>) Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Double>) Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>) Computes the sum of the sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>) Computes the sum of the sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>) Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>) Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>) Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Sum<TSource>(IEnumerable<TSource>, Func<TSource, Single>) Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Take<TSource> Returns a specified number of contiguous elements from the start of a sequence.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Returns elements from a sequence as long as a specified condition is true.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>) Performs a subsequent ordering of the elements in a sequence in ascending order according to a key.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) Performs a subsequent ordering of the elements in a sequence in ascending order by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>) Performs a subsequent ordering of the elements in a sequence in descending order, according to a key.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) Performs a subsequent ordering of the elements in a sequence in descending order by using a specified comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToArray<TSource> Creates an array from a IEnumerable<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function and key comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToList<TSource> Creates a List<T> from an IEnumerable<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>) Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function and key comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>) Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>) Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) Produces the set union of two sequences by using the default equality comparer.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) Produces the set union of two sequences by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Where<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>) Filters a sequence of values based on a predicate.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Where<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>) Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.
Public methodStatic member Zip<TFirst, TSecond, TResult> Merges two sequences by using the specified predicate function.

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Remarks

The methods in this class provide an implementation of the standard query operators for querying data sources that implement IEnumerable<T>. The standard query operators are general purpose methods that follow the LINQ pattern and enable you to express traversal, filter, and projection operations over data in any .NET-based programming language.

The majority of the methods in this class are defined as extension methods that extend IEnumerable<T>. This means they can be called like an instance method on any object that implements IEnumerable<T>.

Methods that are used in a query that returns a sequence of values do not consume the target data until the query object is enumerated. This is known as deferred execution. Methods that are used in a query that returns a singleton value execute and consume the target data immediately.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference