Attribute.IsDefined Method (ParameterInfo, Type)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Determines whether any custom attributes are applied to a method parameter. Parameters specify the method parameter, and the type of the custom attribute to search for.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- element
- Type: System.Reflection.ParameterInfo
An object derived from the ParameterInfo class that describes a parameter of a member of a class.
- attributeType
- Type: System.Type
The type, or a base type, of the custom attribute to search for.
Return Value
Type: System.Booleantrue if a custom attribute of type attributeType is applied to element; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | element or attributeType is null. |
| ArgumentException | attributeType is not derived from Attribute. |
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