Source. Contains(Object) Method
Determines whether an object is an item in the list.
public: virtual bool Contains(System::Object ^ value);
public virtual bool Contains (object value);
abstract member Contains : obj -> bool override this.Contains : obj -> bool
Public Overridable Function Contains (value As Object) As Boolean
Although the implementation is dependent on the underlying list's
Contains method, typically the following characteristics apply:
List is searched starting at the first element and ending at the last element.
The underlying method performs a linear search; therefore, the average execution time is proportional to the value of the Count property.
The underlying method determines equality by calling the Equals method.