DefaultDependencyAttribute Class

Definition

Namespace:

System.Runtime.CompilerServices

Assembly:

System.Runtime.dll

Source:

DefaultDependencyAttribute.cs

Provides a hint to the common language runtime (CLR) indicating how likely a dependency is to be loaded. This class is used in a dependent assembly to indicate what hint should be used when the parent does not specify the DependencyAttribute attribute. This class cannot be inherited.

public ref class DefaultDependencyAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Assembly)]
public sealed class DefaultDependencyAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly)>]
type DefaultDependencyAttribute = class
    inherit Attribute

Public NotInheritable Class DefaultDependencyAttribute
Inherits Attribute

Inheritance

Object

Attribute

DefaultDependencyAttribute

Attributes

AttributeUsageAttribute

Examples

The following code example demonstrates how to apply the DefaultDependencyAttribute attribute to an assembly to specify that the dependency is likely to be loaded.

using System;
using System.Runtime.CompilerServices;

[assembly: DefaultDependencyAttribute(LoadHint.Always)]
class Program
{

    static void Main(string[] args)
    {

        Console.WriteLine("The DefaultDependencyAttribute attribute was applied.");
    }
}

Imports System.Runtime.CompilerServices

<Assembly: DefaultDependencyAttribute(LoadHint.Always)> 
Module Program


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


End Module

Remarks

This attribute is used by the Ngen.exe (Native Image Generator) to generate native assembly images.

Apply the DefaultDependencyAttribute attribute to a dependent assembly to determine the preferred default binding.

A dependency that is likely to be loaded (Always) will cause Ngen.exe to bind to that dependency. Using this hint allows Ngen.exe to generate code that will result in a reduced working set and improved throughput but at the cost of always loading the dependency when the parent assembly is loaded.

When you apply the DependencyAttribute attribute to an assembly with a value of Default, the native image generation service consults the dependent assembly for its preferred default binding, which is specified by the DefaultDependencyAttribute attribute.

Constructors

DefaultDependencyAttribute(LoadHint)

Initializes a new instance of the DefaultDependencyAttribute class with the specified LoadHint binding.

Properties

LoadHint	Gets the LoadHint value that indicates when an assembly loads a dependency.
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)

See also

• DependencyAttribute
• LoadHint
• LoadHint