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Queryable.SequenceEqual(TSource) Method (IQueryable(TSource), IEnumerable(TSource))

Determines whether two sequences are equal by using the default equality comparer to compare elements.

Namespace:  System.Linq
Assemblies:   System.Linq.Queryable (in System.Linq.Queryable.dll)
  System.Core (in System.Core.dll)

static member SequenceEqual : 
        source1:IQueryable<'TSource> * 
        source2:IEnumerable<'TSource> -> bool

Type Parameters

TSource

The type of the elements of the input sequences.

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.

Return Value

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

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryable(TSource). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

source1 or source2 is a null reference (Nothing in Visual Basic).

The SequenceEqual(TSource)(IQueryable(TSource), IEnumerable(TSource)) method generates a MethodCallExpression that represents calling SequenceEqual(TSource)(IQueryable(TSource), IEnumerable(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)) 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.

The following code example demonstrates how to use SequenceEqual(TSource)(IQueryable(TSource), IEnumerable(TSource)) to determine whether two sequences are equal. In this example the sequences are equal.

No code example is currently available or this language may not be supported.

The following code example compares two sequences that are not equal.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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