CustomAttributeExtensions.GetCustomAttribute<T> Method (ParameterInfo)

.NET Framework 4.6 and 4.5

Retrieves a custom attribute of a specified type that is applied to a specified parameter.

Namespace:  System.Reflection
Assemblies:   System.Reflection.Extensions (in System.Reflection.Extensions.dll)
  mscorlib (in mscorlib.dll)

public static T GetCustomAttribute<T>(
	this ParameterInfo element
)
where T : Attribute

Type Parameters

T

The type of attribute to search for.

Parameters

element
Type: System.Reflection.ParameterInfo

The parameter to inspect.

Return Value

Type: T
A custom attribute that matches T, or null if no such attribute is found.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ParameterInfo. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

element is null.

NotSupportedException

element is not a constructor, method, property, event, type, or field.

AmbiguousMatchException

More than one of the requested attributes was found.

TypeLoadException

A custom attribute type cannot be loaded.

Use the GetCustomAttributes extension method if you expect more than one value to be returned, or AmbiguousMatchException will be thrown.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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