Spread WinForms 15
GrapeCity.Win.PluginInputMan Assembly / GrapeCity.Win.Spread.InputMan.CellType Namespace / CollectionBase<T> Class / Exists Method / Exists<TTarget>(Predicate<TTarget>) Method
The Predicate delegate that defines the conditions of the elements to search for.


In This Topic
Exists<TTarget>(Predicate<TTarget>) Method
In This Topic
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)

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.
See Also

Reference

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

 

 

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