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IQueryable<T> Interface

 

Provides functionality to evaluate queries against a specific data source wherein the type of the data is known.

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

Public Interface IQueryable(Of Out T)
	Inherits IEnumerable(Of T), IEnumerable, IQueryable

Type Parameters

out T

The type of the data in the data source.

Name Description
System_CAPS_pubproperty ElementType

Gets the type of the element(s) that are returned when the expression tree associated with this instance of IQueryable is executed.(Inherited from IQueryable.)

System_CAPS_pubproperty Expression

Gets the expression tree that is associated with the instance of IQueryable.(Inherited from IQueryable.)

System_CAPS_pubproperty Provider

Gets the query provider that is associated with this data source.(Inherited from IQueryable.)

Name Description
System_CAPS_pubmethod GetEnumerator()

Returns an enumerator that iterates through the collection.(Inherited from IEnumerable<T>.)

Name Description
System_CAPS_pubmethod Aggregate<T>(Func<T, T, T>)

Overloaded. Applies an accumulator function over a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Aggregate<TSource>(Expression<Func<TSource, TSource, TSource>>)

Overloaded. Applies an accumulator function over a sequence.(Defined by Queryable.)

System_CAPS_pubmethod Aggregate<T, TAccumulate>(TAccumulate, Func<TAccumulate, T, TAccumulate>)

Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.(Defined by Enumerable.)

System_CAPS_pubmethod Aggregate<TSource, TAccumulate>(TAccumulate, Expression<Func<TAccumulate, TSource, TAccumulate>>)

Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.(Defined by Queryable.)

System_CAPS_pubmethod Aggregate<T, TAccumulate, TResult>(TAccumulate, Func<TAccumulate, T, TAccumulate>, Func<TAccumulate, TResult>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Aggregate<TSource, TAccumulate, TResult>(TAccumulate, Expression<Func<TAccumulate, TSource, TAccumulate>>, Expression<Func<TAccumulate, TResult>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod All<T>(Func<T, Boolean>)

Determines whether all elements of a sequence satisfy a condition.(Defined by Enumerable.)

System_CAPS_pubmethod All<TSource>(Expression<Func<TSource, Boolean>>)

Determines whether all the elements of a sequence satisfy a condition.(Defined by Queryable.)

System_CAPS_pubmethod Any<T>()

Overloaded. Determines whether a sequence contains any elements.(Defined by Enumerable.)

System_CAPS_pubmethod Any<T>(Func<T, Boolean>)

Overloaded. Determines whether any element of a sequence satisfies a condition.(Defined by Enumerable.)

System_CAPS_pubmethod Any<TSource>()

Overloaded. Determines whether a sequence contains any elements.(Defined by Queryable.)

System_CAPS_pubmethod Any<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Determines whether any element of a sequence satisfies a condition.(Defined by Queryable.)

System_CAPS_pubmethod AsEnumerable<T>()

Returns the input typed as IEnumerable<T>.(Defined by Enumerable.)

System_CAPS_pubmethod AsParallel()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethod AsParallel<T>()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethod AsQueryable()

Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.)

System_CAPS_pubmethod AsQueryable<T>()

Overloaded. Converts a generic IEnumerable<T> to a generic IQueryable<T>.(Defined by Queryable.)

System_CAPS_pubmethod Average<T>(Func<T, Decimal>)

Overloaded. Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Double>)

Overloaded. Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Int32>)

Overloaded. Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Int64>)

Overloaded. Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Nullable<Decimal>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Nullable<Double>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Nullable<Int32>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Nullable<Int64>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Nullable<Single>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Average<T>(Func<T, Single>)

Overloaded. Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Decimal>>)

Overloaded. Computes the average of a sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Double>>)

Overloaded. Computes the average of a sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Int32>>)

Overloaded. Computes the average of a sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Int64>>)

Overloaded. Computes the average of a sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Nullable<Decimal>>>)

Overloaded. Computes the average of a sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Nullable<Double>>>)

Overloaded. Computes the average of a sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Nullable<Int32>>>)

Overloaded. Computes the average of a sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Nullable<Int64>>>)

Overloaded. Computes the average of a sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Nullable<Single>>>)

Overloaded. Computes the average of a sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Average<TSource>(Expression<Func<TSource, Single>>)

Overloaded. Computes the average of a sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Cast<TResult>()

Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.)

System_CAPS_pubmethod Concat<T>(IEnumerable<T>)

Concatenates two sequences.(Defined by Enumerable.)

System_CAPS_pubmethod Concat<TSource>(IEnumerable<TSource>)

Concatenates two sequences.(Defined by Queryable.)

System_CAPS_pubmethod Contains<T>(T)

Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer.(Defined by Enumerable.)

System_CAPS_pubmethod Contains<T>(T, IEqualityComparer<T>)

Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>.(Defined by Enumerable.)

System_CAPS_pubmethod Contains<TSource>(TSource)

Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer.(Defined by Queryable.)

System_CAPS_pubmethod Contains<TSource>(TSource, IEqualityComparer<TSource>)

Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>.(Defined by Queryable.)

System_CAPS_pubmethod Count<T>()

Overloaded. Returns the number of elements in a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Count<T>(Func<T, Boolean>)

Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition.(Defined by Enumerable.)

System_CAPS_pubmethod Count<TSource>()

Overloaded. Returns the number of elements in a sequence.(Defined by Queryable.)

System_CAPS_pubmethod Count<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the number of elements in the specified sequence that satisfies a condition.(Defined by Queryable.)

System_CAPS_pubmethod DefaultIfEmpty<T>()

Overloaded. Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.(Defined by Enumerable.)

System_CAPS_pubmethod DefaultIfEmpty<T>(T)

Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.(Defined by Enumerable.)

System_CAPS_pubmethod DefaultIfEmpty<TSource>()

Overloaded. Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.(Defined by Queryable.)

System_CAPS_pubmethod DefaultIfEmpty<TSource>(TSource)

Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.(Defined by Queryable.)

System_CAPS_pubmethod Distinct<T>()

Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Distinct<T>(IEqualityComparer<T>)

Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Distinct<TSource>()

Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values.(Defined by Queryable.)

System_CAPS_pubmethod Distinct<TSource>(IEqualityComparer<TSource>)

Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values.(Defined by Queryable.)

System_CAPS_pubmethod ElementAt<T>(Int32)

Returns the element at a specified index in a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod ElementAt<TSource>(Int32)

Returns the element at a specified index in a sequence.(Defined by Queryable.)

System_CAPS_pubmethod ElementAtOrDefault<T>(Int32)

Returns the element at a specified index in a sequence or a default value if the index is out of range.(Defined by Enumerable.)

System_CAPS_pubmethod ElementAtOrDefault<TSource>(Int32)

Returns the element at a specified index in a sequence or a default value if the index is out of range.(Defined by Queryable.)

System_CAPS_pubmethod Except<T>(IEnumerable<T>)

Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Except<T>(IEnumerable<T>, IEqualityComparer<T>)

Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Except<TSource>(IEnumerable<TSource>)

Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values.(Defined by Queryable.)

System_CAPS_pubmethod Except<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Queryable.)

System_CAPS_pubmethod First<T>()

Overloaded. Returns the first element of a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod First<T>(Func<T, Boolean>)

Overloaded. Returns the first element in a sequence that satisfies a specified condition.(Defined by Enumerable.)

System_CAPS_pubmethod First<TSource>()

Overloaded. Returns the first element of a sequence.(Defined by Queryable.)

System_CAPS_pubmethod First<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the first element of a sequence that satisfies a specified condition.(Defined by Queryable.)

System_CAPS_pubmethod FirstOrDefault<T>()

Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.)

System_CAPS_pubmethod FirstOrDefault<T>(Func<T, Boolean>)

Overloaded. Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.(Defined by Enumerable.)

System_CAPS_pubmethod FirstOrDefault<TSource>()

Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements.(Defined by Queryable.)

System_CAPS_pubmethod FirstOrDefault<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the first element of a sequence that satisfies a specified condition or a default value if no such element is found.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<T, TKey>(Func<T, TKey>)

Overloaded. Groups the elements of a sequence according to a specified key selector function.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<T, TKey>(Func<T, TKey>, IEqualityComparer<TKey>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<TSource, TKey>(Expression<Func<TSource, TKey>>)

Overloaded. Groups the elements of a sequence according to a specified key selector function.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<TSource, TKey>(Expression<Func<TSource, TKey>>, IEqualityComparer<TKey>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>, IEqualityComparer<TKey>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<T, TKey, TResult>(Func<T, TKey>, Func<TKey, IEnumerable<T>, TResult>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<T, TKey, TResult>(Func<T, TKey>, Func<TKey, IEnumerable<T>, TResult>, IEqualityComparer<TKey>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TElement>(Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TElement>(Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, IEqualityComparer<TKey>)

Overloaded. Groups the elements of a sequence and projects the elements for each group by using a specified function. Key values are compared by using a specified comparer.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TResult>(Expression<Func<TSource, TKey>>, Expression<Func<TKey, IEnumerable<TSource>, TResult>>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TResult>(Expression<Func<TSource, TKey>>, Expression<Func<TKey, IEnumerable<TSource>, TResult>>, IEqualityComparer<TKey>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Keys are compared by using a specified comparer.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<T, TKey, TElement, TResult>(Func<T, TKey>, Func<T, TElement>, Func<TKey, IEnumerable<TElement>, TResult>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<T, TKey, TElement, TResult>(Func<T, TKey>, Func<T, TElement>, Func<TKey, IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TElement, TResult>(Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod GroupBy<TSource, TKey, TElement, TResult>(Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>, IEqualityComparer<TKey>)

Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Keys are compared by using a specified comparer and the elements of each group are projected by using a specified function.(Defined by Queryable.)

System_CAPS_pubmethod GroupJoin<T, TInner, TKey, TResult>(IEnumerable<TInner>, Func<T, TKey>, Func<TInner, TKey>, Func<T, IEnumerable<TInner>, TResult>)

Overloaded. Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.(Defined by Enumerable.)

System_CAPS_pubmethod GroupJoin<T, TInner, TKey, TResult>(IEnumerable<TInner>, Func<T, TKey>, Func<TInner, TKey>, Func<T, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)

Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.(Defined by Enumerable.)

System_CAPS_pubmethod GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, IEnumerable<TInner>, TResult>>)

Overloaded. Correlates the elements of two sequences based on key equality and groups the results. The default equality comparer is used to compare keys.(Defined by Queryable.)

System_CAPS_pubmethod GroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, IEnumerable<TInner>, TResult>>, IEqualityComparer<TKey>)

Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.(Defined by Queryable.)

System_CAPS_pubmethod Intersect<T>(IEnumerable<T>)

Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Intersect<T>(IEnumerable<T>, IEqualityComparer<T>)

Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Enumerable.)

System_CAPS_pubmethod Intersect<TSource>(IEnumerable<TSource>)

Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values.(Defined by Queryable.)

System_CAPS_pubmethod Intersect<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Queryable.)

System_CAPS_pubmethod Join<T, TInner, TKey, TResult>(IEnumerable<TInner>, Func<T, TKey>, Func<TInner, TKey>, Func<T, TInner, TResult>)

Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.(Defined by Enumerable.)

System_CAPS_pubmethod Join<T, TInner, TKey, TResult>(IEnumerable<TInner>, Func<T, TKey>, Func<TInner, TKey>, Func<T, TInner, TResult>, IEqualityComparer<TKey>)

Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.(Defined by Enumerable.)

System_CAPS_pubmethod Join<TOuter, TInner, TKey, TResult>(IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, TInner, TResult>>)

Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.(Defined by Queryable.)

System_CAPS_pubmethod Join<TOuter, TInner, TKey, TResult>(IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, TInner, TResult>>, IEqualityComparer<TKey>)

Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.(Defined by Queryable.)

System_CAPS_pubmethod Last<T>()

Overloaded. Returns the last element of a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Last<T>(Func<T, Boolean>)

Overloaded. Returns the last element of a sequence that satisfies a specified condition.(Defined by Enumerable.)

System_CAPS_pubmethod Last<TSource>()

Overloaded. Returns the last element in a sequence.(Defined by Queryable.)

System_CAPS_pubmethod Last<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the last element of a sequence that satisfies a specified condition.(Defined by Queryable.)

System_CAPS_pubmethod LastOrDefault<T>()

Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.)

System_CAPS_pubmethod LastOrDefault<T>(Func<T, Boolean>)

Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.(Defined by Enumerable.)

System_CAPS_pubmethod LastOrDefault<TSource>()

Overloaded. Returns the last element in a sequence, or a default value if the sequence contains no elements.(Defined by Queryable.)

System_CAPS_pubmethod LastOrDefault<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.(Defined by Queryable.)

System_CAPS_pubmethod LongCount<T>()

Overloaded. Returns an Int64 that represents the total number of elements in a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod LongCount<T>(Func<T, Boolean>)

Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition.(Defined by Enumerable.)

System_CAPS_pubmethod LongCount<TSource>()

Overloaded. Returns an Int64 that represents the total number of elements in a sequence.(Defined by Queryable.)

System_CAPS_pubmethod LongCount<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns an Int64 that represents the number of elements in a sequence that satisfy a condition.(Defined by Queryable.)

System_CAPS_pubmethod Max<T>()

Overloaded. Returns the maximum value in a generic sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Decimal>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Double>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Int32>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Int64>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Nullable<Decimal>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Nullable<Double>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Nullable<Int32>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Nullable<Int64>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Nullable<Single>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<T>(Func<T, Single>)

Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<TSource>()

Overloaded. Returns the maximum value in a generic IQueryable<T>.(Defined by Queryable.)

System_CAPS_pubmethod Max<T, TResult>(Func<T, TResult>)

Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.(Defined by Enumerable.)

System_CAPS_pubmethod Max<TSource, TResult>(Expression<Func<TSource, TResult>>)

Overloaded. Invokes a projection function on each element of a generic IQueryable<T> and returns the maximum resulting value.(Defined by Queryable.)

System_CAPS_pubmethod Min<T>()

Overloaded. Returns the minimum value in a generic sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Decimal>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Double>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Int32>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Int64>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Nullable<Decimal>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Nullable<Double>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Nullable<Int32>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Nullable<Int64>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Nullable<Single>>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<T>(Func<T, Single>)

Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<TSource>()

Overloaded. Returns the minimum value of a generic IQueryable<T>.(Defined by Queryable.)

System_CAPS_pubmethod Min<T, TResult>(Func<T, TResult>)

Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.(Defined by Enumerable.)

System_CAPS_pubmethod Min<TSource, TResult>(Expression<Func<TSource, TResult>>)

Overloaded. Invokes a projection function on each element of a generic IQueryable<T> and returns the minimum resulting value.(Defined by Queryable.)

System_CAPS_pubmethod OfType<TResult>()

Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.)

System_CAPS_pubmethod OrderBy<T, TKey>(Func<T, TKey>)

Overloaded. Sorts the elements of a sequence in ascending order according to a key.(Defined by Enumerable.)

System_CAPS_pubmethod OrderBy<T, TKey>(Func<T, TKey>, IComparer<TKey>)

Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer.(Defined by Enumerable.)

System_CAPS_pubmethod OrderBy<TSource, TKey>(Expression<Func<TSource, TKey>>)

Overloaded. Sorts the elements of a sequence in ascending order according to a key.(Defined by Queryable.)

System_CAPS_pubmethod OrderBy<TSource, TKey>(Expression<Func<TSource, TKey>>, IComparer<TKey>)

Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer.(Defined by Queryable.)

System_CAPS_pubmethod OrderByDescending<T, TKey>(Func<T, TKey>)

Overloaded. Sorts the elements of a sequence in descending order according to a key.(Defined by Enumerable.)

System_CAPS_pubmethod OrderByDescending<T, TKey>(Func<T, TKey>, IComparer<TKey>)

Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer.(Defined by Enumerable.)

System_CAPS_pubmethod OrderByDescending<TSource, TKey>(Expression<Func<TSource, TKey>>)

Overloaded. Sorts the elements of a sequence in descending order according to a key.(Defined by Queryable.)

System_CAPS_pubmethod OrderByDescending<TSource, TKey>(Expression<Func<TSource, TKey>>, IComparer<TKey>)

Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer.(Defined by Queryable.)

System_CAPS_pubmethod Reverse<T>()

Inverts the order of the elements in a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Reverse<TSource>()

Inverts the order of the elements in a sequence.(Defined by Queryable.)

System_CAPS_pubmethod Select<T, TResult>(Func<T, TResult>)

Overloaded. Projects each element of a sequence into a new form.(Defined by Enumerable.)

System_CAPS_pubmethod Select<T, TResult>(Func<T, Int32, TResult>)

Overloaded. Projects each element of a sequence into a new form by incorporating the element's index.(Defined by Enumerable.)

System_CAPS_pubmethod Select<TSource, TResult>(Expression<Func<TSource, TResult>>)

Overloaded. Projects each element of a sequence into a new form.(Defined by Queryable.)

System_CAPS_pubmethod Select<TSource, TResult>(Expression<Func<TSource, Int32, TResult>>)

Overloaded. Projects each element of a sequence into a new form by incorporating the element's index.(Defined by Queryable.)

System_CAPS_pubmethod SelectMany<T, TResult>(Func<T, IEnumerable<TResult>>)

Overloaded. Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.(Defined by Enumerable.)

System_CAPS_pubmethod SelectMany<T, TResult>(Func<T, Int32, IEnumerable<TResult>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SelectMany<TSource, TResult>(Expression<Func<TSource, IEnumerable<TResult>>>)

Overloaded. Projects each element of a sequence to an IEnumerable<T> and combines the resulting sequences into one sequence.(Defined by Queryable.)

System_CAPS_pubmethod SelectMany<TSource, TResult>(Expression<Func<TSource, Int32, IEnumerable<TResult>>>)

Overloaded. Projects each element of a sequence to an IEnumerable<T> and combines the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.(Defined by Queryable.)

System_CAPS_pubmethod SelectMany<T, TCollection, TResult>(Func<T, IEnumerable<TCollection>>, Func<T, TCollection, TResult>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SelectMany<T, TCollection, TResult>(Func<T, Int32, IEnumerable<TCollection>>, Func<T, TCollection, TResult>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SelectMany<TSource, TCollection, TResult>(Expression<Func<TSource, IEnumerable<TCollection>>>, Expression<Func<TSource, TCollection, TResult>>)

Overloaded. Projects each element of a sequence to an IEnumerable<T> and invokes a result selector function on each element therein. The resulting values from each intermediate sequence are combined into a single, one-dimensional sequence and returned.(Defined by Queryable.)

System_CAPS_pubmethod SelectMany<TSource, TCollection, TResult>(Expression<Func<TSource, Int32, IEnumerable<TCollection>>>, Expression<Func<TSource, TCollection, TResult>>)

Overloaded. Projects each element of a sequence to an IEnumerable<T> that incorporates the index of the source element that produced it. A result selector function is invoked on each element of each intermediate sequence, and the resulting values are combined into a single, one-dimensional sequence and returned.(Defined by Queryable.)

System_CAPS_pubmethod SequenceEqual<T>(IEnumerable<T>)

Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.(Defined by Enumerable.)

System_CAPS_pubmethod SequenceEqual<T>(IEnumerable<T>, IEqualityComparer<T>)

Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>.(Defined by Enumerable.)

System_CAPS_pubmethod SequenceEqual<TSource>(IEnumerable<TSource>)

Overloaded. Determines whether two sequences are equal by using the default equality comparer to compare elements.(Defined by Queryable.)

System_CAPS_pubmethod SequenceEqual<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

Overloaded. Determines whether two sequences are equal by using a specified IEqualityComparer<T> to compare elements.(Defined by Queryable.)

System_CAPS_pubmethod Single<T>()

Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Single<T>(Func<T, Boolean>)

Overloaded. Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.(Defined by Enumerable.)

System_CAPS_pubmethod Single<TSource>()

Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.(Defined by Queryable.)

System_CAPS_pubmethod Single<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.(Defined by Queryable.)

System_CAPS_pubmethod SingleOrDefault<T>()

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SingleOrDefault<T>(Func<T, Boolean>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SingleOrDefault<TSource>()

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod SingleOrDefault<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod Skip<T>(Int32)

Bypasses a specified number of elements in a sequence and then returns the remaining elements.(Defined by Enumerable.)

System_CAPS_pubmethod Skip<TSource>(Int32)

Bypasses a specified number of elements in a sequence and then returns the remaining elements.(Defined by Queryable.)

System_CAPS_pubmethod SkipWhile<T>(Func<T, Boolean>)

Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.(Defined by Enumerable.)

System_CAPS_pubmethod SkipWhile<T>(Func<T, Int32, Boolean>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod SkipWhile<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.(Defined by Queryable.)

System_CAPS_pubmethod SkipWhile<TSource>(Expression<Func<TSource, Int32, Boolean>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod SortBy<T>(String)

Specifies a sort order.(Defined by QueryExtensions.)

System_CAPS_pubmethod Sum<T>(Func<T, Decimal>)

Overloaded. Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Double>)

Overloaded. Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Int32>)

Overloaded. Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Int64>)

Overloaded. Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Nullable<Decimal>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Nullable<Double>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Nullable<Int32>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Nullable<Int64>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Nullable<Single>>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<T>(Func<T, Single>)

Overloaded. Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Decimal>>)

Overloaded. Computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Double>>)

Overloaded. Computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Int32>>)

Overloaded. Computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Int64>>)

Overloaded. Computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Nullable<Decimal>>>)

Overloaded. Computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Nullable<Double>>>)

Overloaded. Computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Nullable<Int32>>>)

Overloaded. Computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Nullable<Int64>>>)

Overloaded. Computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Nullable<Single>>>)

Overloaded. Computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Sum<TSource>(Expression<Func<TSource, Single>>)

Overloaded. Computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.(Defined by Queryable.)

System_CAPS_pubmethod Take<T>(Int32)

Returns a specified number of contiguous elements from the start of a sequence.(Defined by Enumerable.)

System_CAPS_pubmethod Take<TSource>(Int32)

Returns a specified number of contiguous elements from the start of a sequence.(Defined by Queryable.)

System_CAPS_pubmethod TakeWhile<T>(Func<T, Boolean>)

Overloaded. Returns elements from a sequence as long as a specified condition is true.(Defined by Enumerable.)

System_CAPS_pubmethod TakeWhile<T>(Func<T, Int32, Boolean>)

Overloaded. 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.(Defined by Enumerable.)

System_CAPS_pubmethod TakeWhile<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Returns elements from a sequence as long as a specified condition is true.(Defined by Queryable.)

System_CAPS_pubmethod TakeWhile<TSource>(Expression<Func<TSource, Int32, Boolean>>)

Overloaded. 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.(Defined by Queryable.)

System_CAPS_pubmethod ToArray<T>()

Creates an array from a IEnumerable<T>.(Defined by Enumerable.)

System_CAPS_pubmethod ToDictionary<T, TKey>(Func<T, TKey>)

Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function.(Defined by Enumerable.)

System_CAPS_pubmethod ToDictionary<T, TKey>(Func<T, TKey>, IEqualityComparer<TKey>)

Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function and key comparer.(Defined by Enumerable.)

System_CAPS_pubmethod ToDictionary<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>)

Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions.(Defined by Enumerable.)

System_CAPS_pubmethod ToDictionary<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>, IEqualityComparer<TKey>)

Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function.(Defined by Enumerable.)

System_CAPS_pubmethod ToList<T>()

Creates a List<T> from an IEnumerable<T>.(Defined by Enumerable.)

System_CAPS_pubmethod ToLookup<T, TKey>(Func<T, TKey>)

Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function.(Defined by Enumerable.)

System_CAPS_pubmethod ToLookup<T, TKey>(Func<T, TKey>, IEqualityComparer<TKey>)

Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function and key comparer.(Defined by Enumerable.)

System_CAPS_pubmethod ToLookup<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>)

Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions.(Defined by Enumerable.)

System_CAPS_pubmethod ToLookup<T, TKey, TElement>(Func<T, TKey>, Func<T, TElement>, IEqualityComparer<TKey>)

Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function.(Defined by Enumerable.)

System_CAPS_pubmethod Union<T>(IEnumerable<T>)

Overloaded. Produces the set union of two sequences by using the default equality comparer.(Defined by Enumerable.)

System_CAPS_pubmethod Union<T>(IEnumerable<T>, IEqualityComparer<T>)

Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer<T>.(Defined by Enumerable.)

System_CAPS_pubmethod Union<TSource>(IEnumerable<TSource>)

Overloaded. Produces the set union of two sequences by using the default equality comparer.(Defined by Queryable.)

System_CAPS_pubmethod Union<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer<T>.(Defined by Queryable.)

System_CAPS_pubmethod Where<T>(Func<T, Boolean>)

Overloaded. Filters a sequence of values based on a predicate.(Defined by Enumerable.)

System_CAPS_pubmethod Where<T>(Func<T, Int32, Boolean>)

Overloaded. Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.(Defined by Enumerable.)

System_CAPS_pubmethod Where<TSource>(Expression<Func<TSource, Boolean>>)

Overloaded. Filters a sequence of values based on a predicate.(Defined by Queryable.)

System_CAPS_pubmethod Where<TSource>(Expression<Func<TSource, Int32, Boolean>>)

Overloaded. Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.(Defined by Queryable.)

System_CAPS_pubmethod Zip<T, TSecond, TResult>(IEnumerable<TSecond>, Func<T, TSecond, TResult>)

Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.(Defined by Enumerable.)

System_CAPS_pubmethod Zip<TFirst, TSecond, TResult>(IEnumerable<TSecond>, Expression<Func<TFirst, TSecond, TResult>>)

Merges two sequences by using the specified predicate function.(Defined by Queryable.)

The IQueryable<T> interface is intended for implementation by query providers.

This interface inherits the IEnumerable<T> interface so that if it represents a query, the results of that query can be enumerated. Enumeration forces the expression tree associated with an IQueryable<T> object to be executed. Queries that do not return enumerable results are executed when the Execute<TResult>(Expression) method is called.

The definition of "executing an expression tree" is specific to a query provider. For example, it may involve translating the expression tree to a query language appropriate for an underlying data source.

The IQueryable<T> interface enables queries to be polymorphic. That is, because a query against an IQueryable data source is represented as an expression tree, it can be executed against different types of data sources.

The static (Shared in Visual Basic) methods defined in the class Queryable (except for AsQueryable, ThenBy, and ThenByDescending) extend objects of types that implement the IQueryable<T> interface.

For more information about how to create your own LINQ provider, see LINQ: Building an IQueryable Provider on MSDN Blogs.

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
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