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C# in a Nutshell, Second Edition
book

C# in a Nutshell, Second Edition

by Peter Drayton, Ben Albahari, Ted Neward
August 2003
Intermediate to advanced content levelIntermediate to advanced
928 pages
32h 1m
English
O'Reilly Media, Inc.
Content preview from C# in a Nutshell, Second Edition

Name

AttributeUsageAttribute

Synopsis

This attribute is used when developing a custom attribute class. It allows you to specify how your custom attribute must be used. The ValidOn property uses a bitwise combination of values from AttributeTargets to specify the code elements that can use your custom attribute. It’s read-only and must be initialized using the constructor, as in [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)].

The AllowMultiple property specifies whether the attribute can be used more than once for the same element. The Inherited attribute specifies whether your custom attribute will be applied to derived classes and overridden members. These are indicated using the usual named parameter syntax supported by attributes, as in [AttributeUsage(Inherited = true, AllowMultiple = true)].

public sealed class AttributeUsageAttribute : Attribute {
// Public Constructors
   public AttributeUsageAttribute(AttributeTargets validOn);
// Public Instance Properties
   public bool AllowMultiple{set; get; }
   public bool Inherited{set; get; }
   public AttributeTargets ValidOn{get; }
}

Hierarchy

Object Attribute AttributeUsageAttribute

Valid On

Class

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Publisher Resources

ISBN: 0596005261Catalog PageErrata