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CustomAttributeExtensions.GetCustomAttribute Method (Assembly, Type)

.NET Framework 4.6 and 4.5

Retrieves a custom attribute of a specified type that is applied to a specified assembly.

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

public static Attribute GetCustomAttribute(
	this Assembly element,
	Type attributeType
)

Parameters

element
Type: System.Reflection.Assembly

The assembly to inspect.

attributeType
Type: System.Type

The type of attribute to search for.

Return Value

Type: System.Attribute
A custom attribute that matches attributeType, or null if no such attribute is found.

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.

AmbiguousMatchException

More than one of the requested attributes was found.

Use the GetCustomAttributes extension method if you expect more than one value to be returned, or AmbiguousMatchException will be thrown.

.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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