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CustomAttributeExtensions.IsDefined Method (Assembly, Type)

.NET Framework 4.6 and 4.5

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

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

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

Parameters

element
Type: System.Reflection.Assembly

The assembly to inspect.

attributeType
Type: System.Type

The type of the 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 Assembly. 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.

.NET Framework

Supported in: 4.6, 4.5

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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