Contains メソッド (ObservableCollection<T>)

Determines whether an element is in the Collection.

シンタックス

'宣言
 
Public Function Contains( _
   ByVal item As T _
) As Boolean

public bool Contains( 
   T item
)

item: The object to locate in the Collection. The value can be null 参照 (Visual Basicでは Nothing) for reference types.

true if is found in the Collection; otherwise, false.

参照