ViewDataDictionary.ContainsKey Method

Determines whether the collection contains an element that has the specified key.

Namespace:  System.Web.Mvc
Assembly:  System.Web.Mvc (in System.Web.Mvc.dll)

Syntax

'Declaration
Public Function ContainsKey ( _
    key As String _
) As Boolean

public bool ContainsKey(
    string key
)

public:
virtual bool ContainsKey(
    String^ key
) sealed

Parameters

• key
  Type: System.String
  The key of the element to locate in the collection.

Return Value

Type: System.Boolean
true if the collection contains an element that has the specified key; otherwise, false.

Implements

IDictionary<TKey, TValue>.ContainsKey(TKey)

Exceptions

Exception	Condition
ArgumentNullException	key is null reference (Nothing in Visual Basic).

See Also

Reference

ViewDataDictionary Class

System.Web.Mvc Namespace