CustomAttributeExtensions.IsDefined Method (MemberInfo, Type)

.NET Framework 4.6 and 4.5

Indicates whether custom attributes of a specified type are applied to a specified member.

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

public static bool IsDefined(
	this MemberInfo element,
	Type attributeType
)

Parameters

element
Type: System.Reflection.MemberInfo

The member to inspect.

attributeType
Type: System.Type

The type of attribute to search for.

Return Value

Type: System.Boolean
true if an attribute of the specified type is applied to element; otherwise, false.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type MemberInfo. 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 or attributeType is null.

ArgumentException

attributeType is not derived from Attribute.

NotSupportedException

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

.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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