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Attribute.IsDefined Method (ParameterInfo, Type, Boolean)

[ 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, the type of the custom attribute to search for, and whether to search ancestors of the method parameter.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static bool IsDefined(
	ParameterInfo element,
	Type attributeType,
	bool inherit
)

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.
inherit
Type: System.Boolean
If true, specifies to also search the ancestors of element for custom attributes.

Return Value

Type: System.Boolean
true if a custom attribute of type attributeType is applied to element; otherwise, false.

ExceptionCondition
ArgumentNullException

element or attributeType is null.

ArgumentException

attributeType is not derived from Attribute.

ExecutionEngineException

element is not a method, constructor, or type.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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