Attribute.IsDefined Method (Assembly, Type, Boolean)
Determines whether any custom attributes are applied to an assembly. Parameters specify the assembly, the type of the custom attribute to search for, and an ignored search option.
Assembly: mscorlib (in mscorlib.dll)
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.
- inherit
-
Type:
System.Boolean
This parameter is ignored, and does not affect the operation of this method.
Return Value
Type: System.Booleantrue if a custom attribute of type attributeType is applied to element; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | element or attributeType is null. |
| ArgumentException | attributeType is not derived from Attribute. |
Note |
|---|
Starting with the .NET Framework version 2.0, this method returns true if the assembly has security attributes stored in the new metadata format. Assemblies compiled with version 2.0 or later use the new format. Dynamic assemblies and assemblies compiled with earlier versions of the .NET Framework use the old XML format. See Emitting Declarative Security Attributes. |
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
