DependencyAttribute Class
 

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

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

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.Runtime.CompilerServicesDependencyAttribute

Syntax
[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple = true)]
public sealed class DependencyAttribute : Attribute
[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets::Assembly, AllowMultiple = true)]
public ref class DependencyAttribute sealed : Attribute
[<Sealed>]
[<SerializableAttribute>]
[<AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple = true)>]
type DependencyAttribute = 
    class
        inherit Attribute
    end
<SerializableAttribute>
<AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple := True)>
Public NotInheritable Class DependencyAttribute
	Inherits Attribute
Constructors
NameDescription
System_CAPS_pubmethod DependencyAttribute

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

Properties
NameDescription
System_CAPS_pubproperty

Gets the value of the dependent assembly.

System_CAPS_pubproperty

Gets the LoadHint value that indicates when an assembly is to load a dependency.

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_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_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

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.

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
Version Information
.NET Framework
Available since 2.0
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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