Contains<TKey>(Expression<Func<T,TKey>>) Method

In This Topic

Determines whether an index with the specified key selector exists in the collection.

Syntax

'Declaration
 
Public Overloads Function Contains(Of TKey)( _
   ByVal keySelector As Expression(Of Func(Of T,TKey)) _
) As Boolean

public bool Contains<TKey>( 
   Expression<Func<T,TKey>> keySelector
)

true if an index with the specified key selector is found in the collection; otherwise, false.