DependencyAttribute Class

Definition

Namespace:

System.Runtime.CompilerServices

Assembly:

System.Runtime.dll

Source:

DependencyAttribute.cs

Indicates when a dependency is to be loaded by the referring assembly. This class cannot be inherited.

public ref class DependencyAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true)]
public sealed class DependencyAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true)>]
type DependencyAttribute = class
    inherit Attribute

Public NotInheritable Class DependencyAttribute
Inherits Attribute

Inheritance

Object

Attribute

DependencyAttribute

Attributes

AttributeUsageAttribute

Examples

The following example specifies that the native image generation service always binds to AssemblyA and sometimes binds to AssemblyB.

using System;
using System.Runtime.CompilerServices;

[assembly: DependencyAttribute("AssemblyA", LoadHint.Always)]
[assembly: DependencyAttribute("AssemblyB", LoadHint.Sometimes)]

class Program
{

    static void Main(string[] args)
    {

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

Imports System.Runtime.CompilerServices

<Assembly: DependencyAttribute("AssemblyA", LoadHint.Always)> 
<Assembly: DependencyAttribute("AssemblyB", LoadHint.Sometimes)> 
Module Program


    Sub Main(ByVal args() As String)
        Console.WriteLine("The DependencyAttribute 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 DependencyAttribute attribute to a dependent assembly with a value of the LoadHint enumeration to specify when a referring assembly is to load a dependency.

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.

Constructors

DependencyAttribute(String, LoadHint)

Initializes a new instance of the DependencyAttribute class with the specified LoadHint value.

Properties

DependentAssembly	Gets the value of the dependent assembly.
LoadHint	Gets the LoadHint value that indicates when an assembly is to load 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

• DefaultDependencyAttribute
• LoadHint
• LoadHint