Spread Windows Forms 7.0 Product Documentation
Exists<TTarget>(Predicate<TTarget>) Method
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GrapeCity.Win.PluginInputMan Assembly > GrapeCity.Win.Spread.InputMan.CellType Namespace > CollectionBase<T> Class > Exists Method : Exists<TTarget>(Predicate<TTarget>) Method

Visual Basic (Declaration)
Visual Basic (Usage)
C#

match: 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

Visual Basic (Declaration)
Public Overloads Function Exists(Of TTarget As T)( _ ByVal match As Predicate(Of TTarget) _ ) As Boolean

Visual Basic (Usage)	Copy Code
Dim instance As CollectionBase(Of T) Dim match As Predicate(Of TTarget) Dim value As Boolean value = instance.Exists(Of TTarget)(match)

C#
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