System Namespace   Enum Class

---

Returns an indication whether a constant with a specified value exists in a specified enumeration.

[ VB ]
<Serializable>
Public Shared Function IsDefined ( _
   ByVal enumType As Type, _
   ByVal value As Object _
) As Boolean

[ C# ]
[Serializable]
public static bool IsDefined (
   Type enumType,
   object value
);

[ C++ ]
[Serializable]
public: static bool IsDefined (
   Type* enumType,
   Object* value
);

[JScript ]
public Serializable
static function IsDefined (
   enumType : Type,
   value : Object
) : Boolean;

enumType

An enumeration type.

value

The value or name of a constant in enumType.

true if a constant in enumType has a value equal to value; otherwise, false.

Exception Type	Condition
ArgumentNullException	enumType or value is a null reference ( Nothing in Visual Basic ).
ArgumentException	enumType is not an Enum. -or- The type of value is not an enumType. -or- The type of value is not an underlying type of enumType.
ExecutionEngineException	value is not type SByte, Int16, Int32, Int64, Byte, UInt16, UInt32, or UInt64.

Enum Members

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