Enumerable.SequenceEqual<'TSource> Method (IEnumerable<'TSource>, IEnumerable<'TSource>, IEqualityComparer<'TSource>)

 

Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<'T>.

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

static member SequenceEqual<'TSource> : 
        first:IEnumerable<'TSource> *
        second:IEnumerable<'TSource> *
        comparer:IEqualityComparer<'TSource> -> bool

Parameters

first
Type: System.Collections.Generic.IEnumerable<'TSource>

An IEnumerable<'T> to compare to second.

second
Type: System.Collections.Generic.IEnumerable<'TSource>

An IEnumerable<'T> to compare to 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 according to comparer; otherwise, false.

Type Parameters

TSource

The type of the elements of the input sequences.

Exception Condition
ArgumentNullException

first or second is null.

The SequenceEqual<'TSource>(IEnumerable<'TSource>, IEnumerable<'TSource>, IEqualityComparer<'TSource>) method enumerates the two source sequences in parallel and compares corresponding elements by using the specified IEqualityComparer<'T>. If comparer is null, the default equality comparer, Default, is used to compare elements.

The following example shows how to implement an equality comparer that can be used in the SequenceEqual<'TSource>(IEnumerable<'TSource>, IEnumerable<'TSource>, IEqualityComparer<'TSource>) method.

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

After you implement this comparer, you can use sequences of Product objects in the SequenceEqual<'TSource>(IEnumerable<'TSource>, IEnumerable<'TSource>, IEqualityComparer<'TSource>) method, as shown in the following example.

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

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 7.0
Windows Phone
Available since 8.1
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