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Array.IList.Contains Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Determines whether an element is in the Array.

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

Syntax

'Declaration
Private Function Contains ( _
    value As Object _
) As Boolean Implements IList.Contains

bool IList.Contains(
    Object value
)

Parameters

  • value
    Type: System.Object
    The object to locate in the Array. The element to locate can be nulla null reference (Nothing in Visual Basic) for reference types.

Return Value

Type: System.Boolean
true if value is found in the Array; otherwise, false.

Implements

IList.Contains(Object)

Exceptions

Exception Condition
RankException

The current Array is multidimensional.

Remarks

This method performs a linear search; therefore, this method is an O(n) operation, where n is ICollection.Count.

This method determines equality by calling the Object.Equals method.

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

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.