'Declaration
Public Overloads Function Contains(Of TKey)( _ ByVal keySelector As System.Linq.Expressions.Expression(Of Func(Of T,TKey)) _ ) As System.Boolean
public System.bool Contains<TKey>( System.Linq.Expressions.Expression<Func<T,TKey>> keySelector )
Parameters
- keySelector
- Key selector expression of an index, see KeySelector.
Type Parameters
- TKey
- The type of the index key.
Return Value
true if an index with the specified key selector is found in the collection; otherwise, false.