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Queryable.SequenceEqual<TSource> Method (IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)

 

Determines whether two sequences are equal by using a specified IEqualityComparer<T> to compare elements.

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

public static bool SequenceEqual<TSource>(
	this IQueryable<TSource> source1,
	IEnumerable<TSource> source2,
	IEqualityComparer<TSource> comparer
)

Parameters

source1
Type: System.Linq.IQueryable<TSource>

An IQueryable<T> whose elements to compare to those of source2.

source2
Type: System.Collections.Generic.IEnumerable<TSource>

An IEnumerable<T> whose elements to compare to those of the first sequence.

comparer
Type: System.Collections.Generic.IEqualityComparer<TSource>

An IEqualityComparer<T> to use to compare elements.

Return Value

Type: System.Boolean

true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false.

Type Parameters

TSource

The type of the elements of the input sequences.

Exception Condition
ArgumentNullException

source1 or source2 is null.

The SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) method generates a MethodCallExpression that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) itself as a constructed generic method. It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source1 parameter.

The query behavior that occurs as a result of executing an expression tree that represents calling SequenceEqual<TSource>(IQueryable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) depends on the implementation of the type of the source1 parameter. The expected behavior is that it determines if the two source sequences are equal by using comparer to compare elements.

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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