Exists<TTarget>(Predicate<TTarget>) Method

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

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Function Exists(Of TTarget As T)( _
   ByVal match As Predicate(Of TTarget) _
) As Boolean

'Usage
 
Dim instance As CollectionBase(Of T)
Dim match As Predicate(Of TTarget)
Dim value As Boolean
 
value = instance.Exists(Of TTarget)(match)

public bool Exists<TTarget>( 
   Predicate<TTarget> match
)
where TTarget: T

Parameters

match: The Predicate delegate that defines the conditions of the elements to search for.

Type Parameters

TTarget

Return Value

true if the List contains one or more elements that match the conditions defined by the specified predicate; otherwise, false.

Exceptions

Exception	Description
System.ArgumentNullException	match is null.

Requirements

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8

Reference

CollectionBase<T> Class
CollectionBase<T> Members
Overload List