DiscardableAttribute Class
 

Marks a type definition as discardable.

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

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.Runtime.CompilerServicesDiscardableAttribute

Syntax
[ComVisibleAttribute(true)]
public class DiscardableAttribute : Attribute
[ComVisibleAttribute(true)]
public ref class DiscardableAttribute : Attribute
[<ComVisibleAttribute(true)>]
type DiscardableAttribute = 
    class
        inherit Attribute
    end
<ComVisibleAttribute(True)>
Public Class DiscardableAttribute
	Inherits Attribute
Constructors
NameDescription
System_CAPS_pubmethod DiscardableAttribute

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

Properties
NameDescription
System_CAPS_pubproperty

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

Methods
NameDescription
System_CAPS_pubmethod Equals

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_protmethod Finalize

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethod GetHashCode

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethod GetType

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethod 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.)

System_CAPS_pubmethod Match

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_protmethod MemberwiseClone

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethod ToString

Returns a string that represents the current object.(Inherited from Object.)

Explicit Interface Implementations
NameDescription
System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetIDsOfNames

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfo

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfoCount

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

System_CAPS_pubinterface System_CAPS_privmethod _AttributeInvoke

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

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.

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
Version Information
.NET Framework
Available since 1.1
Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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