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Exists<TTarget>(Predicate<TTarget>) Method


The Predicate delegate that defines the conditions of the elements to search for.
Determines whether the List contains elements that match the conditions defined by the specified predicate.
Syntax
'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
ExceptionDescription
System.ArgumentNullExceptionmatch is null.
Requirements

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows Server 2012 R2, Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

See Also

Reference

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

 

 


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