Exists(T) Method

Array.Exists<T> Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Determines whether the specified array contains elements that match the conditions defined by the specified predicate.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static bool Exists<T>(
	T[] array,
	Predicate<T> match
)

Type Parameters

T

The type of the elements of the array.

Parameters

array
Type: T []
The one-dimensional, zero-based Array to search.
match
Type: System.Predicate<T>
The Predicate<T> that defines the conditions of the elements to search for.

Return Value

Type: System.Boolean
true if array contains one or more elements that match the conditions defined by the specified predicate; otherwise, false.

ExceptionCondition
ArgumentNullException

array is null.

-or-

match is null.

The Predicate<T> is a delegate to a method that returns true if the object passed to it matches the conditions defined in the delegate. The elements of array are individually passed to the Predicate<T>, and processing is stopped when a match is found.

This method is an O(n) operation, where n is the Length of array.

Windows Phone OS

Supported in: 8.1, 8.0

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