Article
11/18/2011

Attribute.GetCustomAttribute Method (ParameterInfo, Type, Boolean)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Retrieves a custom attribute 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)

Syntax

'Declaration
Public Shared Function GetCustomAttribute ( _
    element As ParameterInfo, _
    attributeType As Type, _
    inherit As Boolean _
) As Attribute

public static Attribute GetCustomAttribute(
    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.Attribute
A reference to the single custom attribute of type attributeType that is applied to element, or nulla null reference (Nothing in Visual Basic) if there is no such attribute.

Exceptions

Exception	Condition
ArgumentNullException	element or attributeType is nulla null reference (Nothing in Visual Basic).
ArgumentException	attributeType is not derived from Attribute.
AmbiguousMatchException	More than one of the requested attributes was found.
TypeLoadException	A custom attribute type cannot be loaded.

Remarks

If element represents a parameter in a method of a derived type, the return value includes the inheritable custom attributes applied to the same parameter in the overridden base methods.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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