Windows Dev Center

Attribute.IsDefined Method (Module, Type, Boolean)

Determines whether any custom attributes are applied to a module. Parameters specify the module, the type of the custom attribute to search for, and an ignored search option.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static bool IsDefined(
	Module element,
	Type attributeType,
	bool inherit


Type: System.Reflection.Module
An object derived from the Module class that describes a portable executable file.
Type: System.Type
The type, or a base type, of the custom attribute to search for.
Type: System.Boolean
This parameter is ignored, and does not affect the operation of this method.

Return Value

Type: System.Boolean
true if a custom attribute of type attributeType is applied to element; otherwise, false.


element or attributeType is null.


attributeType is not derived from Attribute.

This method ignores the inherit parameter and does not search the ancestors of element for custom attributes.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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