Determines whether the DictElement contains the specified key.
[C#] virtual bool ContainsKey(string key) virtual bool ContainsKey(TKey key) [Visual Basic] Overridable Function ContainsKey(key As string) As Boolean Overridable Function ContainsKey(key As TKey) As Boolean
virtual bool ContainsKey(string key) virtual bool ContainsKey(TKey key)
Overridable Function ContainsKey(key As string) As Boolean Overridable Function ContainsKey(key As TKey) As Boolean