Attribute.IsDefined Method (Assembly, Type)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Determines whether any custom attributes are applied to an assembly. Parameters specify the assembly, and the type of the custom attribute to search for.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function IsDefined ( _
element As Assembly, _
attributeType As Type _
) As Boolean
public static bool IsDefined(
Assembly element,
Type attributeType
)
Parameters
- element
Type: System.Reflection.Assembly
An object derived from the Assembly class that describes a reusable collection of modules.
- attributeType
Type: System.Type
The type, or a base type, of the custom attribute to search for.
Return Value
Type: System.Boolean
true if a custom attribute of type attributeType is applied to element; otherwise, false.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | element or attributeType is nulla null reference (Nothing in Visual Basic). |
| ArgumentException | attributeType is not derived from Attribute. |
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.