DiscardableAttribute Class

Definition

Marks a type definition as discardable.

public ref class DiscardableAttribute : Attribute
[System.Runtime.InteropServices.ComVisible(true)]
public class DiscardableAttribute : Attribute
type DiscardableAttribute = class
    inherit Attribute
Public Class DiscardableAttribute
Inherits Attribute
Inheritance
DiscardableAttribute
Attributes

Examples

The following code example demonstrates how to apply the DiscardableAttribute attribute to a type.

using System;
using System.Runtime.CompilerServices;


[DiscardableAttribute()]
class Program
{
    
    static void Main(string[] args)
    {

        Console.WriteLine("The DiscardableAttribute attribute was applied.");

    }
}
Imports System.Runtime.CompilerServices


<DiscardableAttribute()> Module Program


    Sub Main(ByVal args() As String)
        Console.WriteLine("The DiscardableAttribute attribute was applied.")
    End Sub


End Module

Remarks

A type definition might be marked discardable if it is not referenced by any other code in its assembly. This might be useful for languages that support separate compilation, where it is only at link phase that it becomes known whether any type is actually referenced by other code.

The classes in System.Runtime.CompilerServices are for compiler writers' use only.

Constructors

DiscardableAttribute()

Initializes a new instance of the DiscardableAttribute class with default values.

Properties

TypeId

When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)

Methods

Equals(Object)

Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)
GetHashCode()

Returns the hash code for this instance.

(Inherited from Attribute)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)
Match(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to