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)

public:
generic<typename TSource>
[ExtensionAttribute]
static bool SequenceEqual(
	IEnumerable<TSource>^ first,
	IEnumerable<TSource>^ second,
	IEqualityComparer<TSource>^ comparer
)

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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