AppDomain.Load Méthode

Définition

Espace de noms:

System

Assembly:

System.Runtime.dll

Charge Assembly dans ce domaine d'application.

Surcharges

Load(Byte[])	Charge Assembly avec l'image au format COFF (Common Object File Format) contenant un Assembly émis.
Load(AssemblyName)	Charge Assembly en fonction de son AssemblyName.
Load(String)	Charge Assembly en fonction de son nom complet.
Load(Byte[], Byte[])	Charge Assembly avec l'image au format COFF (Common Object File Format) contenant un Assembly émis. Les octets bruts représentant les symboles de Assembly sont également chargés.

Load(Byte[])

Source:

AppDomain.cs

Charge Assembly avec l'image au format COFF (Common Object File Format) contenant un Assembly émis.

public:
 System::Reflection::Assembly ^ Load(cli::array <System::Byte> ^ rawAssembly);

public System.Reflection.Assembly Load (byte[] rawAssembly);

member this.Load : byte[] -> System.Reflection.Assembly

Public Function Load (rawAssembly As Byte()) As Assembly

Paramètres

rawAssembly

Byte[]

Tableau de type byte qui est une image au format COFF contenant un assembly émis.

Retours

Assembly

Assembly chargé.

Exceptions

ArgumentNullException

rawAssembly a la valeur null.

BadImageFormatException

rawAssembly n’est pas un assembly valide pour le runtime actuellement chargé.

AppDomainUnloadedException

L’opération est tentée sur un domaine d’application non chargé.

FileLoadException

Un assembly ou un module a été chargé à deux reprises avec deux preuves différentes.

Exemples

L’exemple suivant illustre l’utilisation du chargement d’un assembly brut.

Pour que cet exemple de code s’exécute, vous devez fournir le nom complet de l’assembly. Pour plus d’informations sur la façon d’obtenir le nom complet de l’assembly, consultez Noms d’assembly.

using namespace System;
using namespace System::IO;
using namespace System::Reflection;
using namespace System::Reflection::Emit;
void InstantiateMyType( AppDomain^ domain )
{
   try
   {
      
      // You must supply a valid fully qualified assembly name here.
      domain->CreateInstance( "Assembly text name, Version, Culture, PublicKeyToken", "MyType" );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}


// Loads the content of a file to a Byte array.
array<Byte>^ loadFile( String^ filename )
{
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   array<Byte>^buffer = gcnew array<Byte>((int)fs->Length);
   fs->Read( buffer, 0, buffer->Length );
   fs->Close();
   return buffer;
}


// Creates a dynamic assembly with symbol information
// and saves them to temp.dll and temp.pdb
void EmitAssembly( AppDomain^ domain )
{
   AssemblyName^ assemblyName = gcnew AssemblyName;
   assemblyName->Name = "MyAssembly";
   AssemblyBuilder^ assemblyBuilder = domain->DefineDynamicAssembly( assemblyName, AssemblyBuilderAccess::Save );
   ModuleBuilder^ moduleBuilder = assemblyBuilder->DefineDynamicModule( "MyModule", "temp.dll", true );
   TypeBuilder^ typeBuilder = moduleBuilder->DefineType( "MyType", TypeAttributes::Public );
   ConstructorBuilder^ constructorBuilder = typeBuilder->DefineConstructor( MethodAttributes::Public, CallingConventions::Standard, nullptr );
   ILGenerator^ ilGenerator = constructorBuilder->GetILGenerator();
   ilGenerator->EmitWriteLine( "MyType instantiated!" );
   ilGenerator->Emit( OpCodes::Ret );
   typeBuilder->CreateType();
   assemblyBuilder->Save( "temp.dll" );
}

ref class Resolver
{
public:
   static Assembly^ MyResolver( Object^ sender, ResolveEventArgs^ args )
   {
      AppDomain^ domain = dynamic_cast<AppDomain^>(sender);
      
      // Once the files are generated, this call is
      // actually no longer necessary.
      EmitAssembly( domain );
      array<Byte>^rawAssembly = loadFile( "temp.dll" );
      array<Byte>^rawSymbolStore = loadFile( "temp.pdb" );
      Assembly^ assembly = domain->Load( rawAssembly, rawSymbolStore );
      return assembly;
   }

};

int main()
{
   AppDomain^ currentDomain = AppDomain::CurrentDomain;
   InstantiateMyType( currentDomain ); // Failed!
   currentDomain->AssemblyResolve += gcnew ResolveEventHandler( Resolver::MyResolver );
   InstantiateMyType( currentDomain ); // OK!
}

using System;
using System.IO;
using System.Reflection;
using System.Reflection.Emit;

class LoadRawSnippet {
   public static void Main() {
      AppDomain currentDomain = AppDomain.CurrentDomain;

      InstantiateMyType(currentDomain);   // Failed!

      currentDomain.AssemblyResolve += new ResolveEventHandler(MyResolver);

      InstantiateMyType(currentDomain);   // OK!
   }

   static void InstantiateMyType(AppDomain domain) {
      try {
     // You must supply a valid fully qualified assembly name here.
         domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType");
      } catch (Exception e) {
         Console.WriteLine(e.Message);
      }
   }

   // Loads the content of a file to a byte array.
   static byte[] loadFile(string filename) {
      FileStream fs = new FileStream(filename, FileMode.Open);
      byte[] buffer = new byte[(int) fs.Length];
      fs.Read(buffer, 0, buffer.Length);
      fs.Close();

      return buffer;
   }

   static Assembly MyResolver(object sender, ResolveEventArgs args) {
      AppDomain domain = (AppDomain) sender;

      // Once the files are generated, this call is
      // actually no longer necessary.
      EmitAssembly(domain);

      byte[] rawAssembly = loadFile("temp.dll");
      byte[] rawSymbolStore = loadFile("temp.pdb");
      Assembly assembly = domain.Load(rawAssembly, rawSymbolStore);

      return assembly;
   }

   // Creates a dynamic assembly with symbol information
   // and saves them to temp.dll and temp.pdb
   static void EmitAssembly(AppDomain domain) {
      AssemblyName assemblyName = new AssemblyName();
      assemblyName.Name = "MyAssembly";

      AssemblyBuilder assemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save);
      ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", true);
      TypeBuilder typeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public);

      ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, null);
      ILGenerator ilGenerator = constructorBuilder.GetILGenerator();
      ilGenerator.EmitWriteLine("MyType instantiated!");
      ilGenerator.Emit(OpCodes.Ret);

      typeBuilder.CreateType();

      assemblyBuilder.Save("temp.dll");
   }
}

open System
open System.IO
open System.Reflection
open System.Reflection.Emit

let instantiateMyType (domain: AppDomain) =
    try
        // You must supply a valid fully qualified assembly name here.
        domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType")
        |> ignore  
    with e ->
        printfn $"{e.Message}"

// Loads the content of a file to a byte array.
let loadFile filename =
    use fs = new FileStream(filename, FileMode.Open)
    let buffer = Array.zeroCreate<byte> (int fs.Length)
    fs.Read(buffer, 0, buffer.Length) |> ignore
    fs.Close()
    buffer

// Creates a dynamic assembly with symbol information
// and saves them to temp.dll and temp.pdb
let emitAssembly (domain: AppDomain) =
    let assemblyName = AssemblyName()
    assemblyName.Name <- "MyAssembly"

    let assemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save)
    let moduleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", true)
    let typeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public)

    let constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, null)
    let ilGenerator = constructorBuilder.GetILGenerator()
    ilGenerator.EmitWriteLine "MyType instantiated!"
    ilGenerator.Emit OpCodes.Ret

    typeBuilder.CreateType() |> ignore

    assemblyBuilder.Save "temp.dll"

let myResolver (sender: obj) (args: ResolveEventArgs) =
    let domain = sender :?> AppDomain

    // Once the files are generated, this call is
    // actually no longer necessary.
    emitAssembly domain

    let rawAssembly = loadFile "temp.dll"
    let rawSymbolStore = loadFile "temp.pdb"
    domain.Load(rawAssembly, rawSymbolStore)

let currentDomain = AppDomain.CurrentDomain

instantiateMyType currentDomain   // Failed!

currentDomain.add_AssemblyResolve (ResolveEventHandler myResolver)

instantiateMyType currentDomain   // OK!

Imports System.IO
Imports System.Reflection
Imports System.Reflection.Emit

Module Test
   
   Sub Main()
      Dim currentDomain As AppDomain = AppDomain.CurrentDomain
      
      InstantiateMyType(currentDomain)      ' Failed!

      AddHandler currentDomain.AssemblyResolve, AddressOf MyResolver
      
      InstantiateMyType(currentDomain)      ' OK!
   End Sub
   
   
   Sub InstantiateMyType(domain As AppDomain)
      Try
     ' You must supply a valid fully qualified assembly name here.
         domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType")
      Catch e As Exception
         Console.WriteLine(e.Message)
      End Try
   End Sub
   
   
   ' Loads the content of a file to a byte array. 
   Function loadFile(filename As String) As Byte()
      Dim fs As New FileStream(filename, FileMode.Open)
      Dim buffer(CInt(fs.Length - 1)) As Byte
      fs.Read(buffer, 0, buffer.Length)
      fs.Close()
      
      Return buffer
   End Function 'loadFile
   
   
   Function MyResolver(sender As Object, args As ResolveEventArgs) As System.Reflection.Assembly
      Dim domain As AppDomain = DirectCast(sender, AppDomain)
      
      ' Once the files are generated, this call is
      ' actually no longer necessary.
      EmitAssembly(domain)
      
      Dim rawAssembly As Byte() = loadFile("temp.dll")
      Dim rawSymbolStore As Byte() = loadFile("temp.pdb")
      Dim myAssembly As System.Reflection.Assembly = domain.Load(rawAssembly, rawSymbolStore)
      
      Return myAssembly
   End Function 'MyResolver
   
   
   ' Creates a dynamic assembly with symbol information
   ' and saves them to temp.dll and temp.pdb
   Sub EmitAssembly(domain As AppDomain)
      Dim assemblyName As New AssemblyName()
      assemblyName.Name = "MyAssembly"
      
      Dim assemblyBuilder As AssemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save)
      Dim moduleBuilder As ModuleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", True)
      Dim typeBuilder As TypeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public)
      
      Dim constructorBuilder As ConstructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, Nothing)
      Dim ilGenerator As ILGenerator = constructorBuilder.GetILGenerator()
      ilGenerator.EmitWriteLine("MyType instantiated!")
      ilGenerator.Emit(OpCodes.Ret)
      
      typeBuilder.CreateType()
      
      assemblyBuilder.Save("temp.dll")
   End Sub

End Module 'Test

Remarques

Pour plus d’informations communes à toutes les surcharges de cette méthode, consultez la surcharge de Load(AssemblyName) méthode.

À compter de .NET Framework 4, le niveau d’approbation d’un assembly chargé à l’aide de cette méthode est identique au niveau d’approbation du domaine d’application.

Load(AssemblyName)

Source:

AppDomain.cs

Charge Assembly en fonction de son AssemblyName.

public:
 System::Reflection::Assembly ^ Load(System::Reflection::AssemblyName ^ assemblyRef);

public System.Reflection.Assembly Load (System.Reflection.AssemblyName assemblyRef);

member this.Load : System.Reflection.AssemblyName -> System.Reflection.Assembly

Public Function Load (assemblyRef As AssemblyName) As Assembly

Paramètres

assemblyRef

AssemblyName

Objet qui décrit l'assembly à charger.

Retours

Assembly

Assembly chargé.

Exceptions

ArgumentNullException

assemblyRef a la valeur null.

FileNotFoundException

assemblyRef est introuvable.

BadImageFormatException

assemblyRef n’est pas un assembly valide pour le runtime actuellement chargé.

AppDomainUnloadedException

L’opération est tentée sur un domaine d’application non chargé.

FileLoadException

Un assembly ou un module a été chargé à deux reprises avec deux preuves différentes.

Remarques

Cette méthode doit être utilisée uniquement pour charger un assembly dans le domaine d’application actuel. Cette méthode est fournie à titre pratique pour les appelants d’interopérabilité qui ne peuvent pas appeler la méthode statique Assembly.Load . Pour charger des assemblys dans d’autres domaines d’application, utilisez une méthode telle que CreateInstanceAndUnwrap.

Si une version de l’assembly demandé est déjà chargée, cette méthode retourne l’assembly chargé, même si une autre version est demandée.

La fourniture d’un nom d’assembly partiel pour assemblyRef n’est pas recommandée. (Un nom partiel omet un ou plusieurs jetons de culture, de version ou de clé publique. Pour les surcharges qui prennent une chaîne au lieu d’un AssemblyName objet, « MyAssembly, Version=1.0.0.0 » est un exemple de nom partiel et « MyAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=18ab3442da84b47 » est un exemple de nom complet.) L’utilisation de noms partiels a un effet négatif sur les performances. En outre, un nom d’assembly partiel peut charger un assembly à partir du global assembly cache uniquement s’il existe une copie exacte de l’assembly dans le répertoire de base de l’application (BaseDirectory ou AppDomainSetup.ApplicationBase).

Si l’objet actuel AppDomain représente le domaine Ad’application et que la Load méthode est appelée à partir du domaine Bd’application , l’assembly est chargé dans les deux domaines d’application. Par exemple, le code suivant se charge MyAssembly dans le nouveau domaine ChildDomain d’application et également dans le domaine d’application où le code s’exécute :

AppDomain^ ad = AppDomain::CreateDomain("ChildDomain");
ad->Load("MyAssembly");

AppDomain ad = AppDomain.CreateDomain("ChildDomain");
ad.Load("MyAssembly");

let ad = AppDomain.CreateDomain "ChildDomain"
ad.Load "MyAssembly"

Dim ad As AppDomain  = AppDomain.CreateDomain("ChildDomain")
ad.Load("MyAssembly")

L’assembly est chargé dans les deux domaines, car Assembly il ne dérive pas de MarshalByRefObject, et par conséquent, la valeur de retour de la Load méthode ne peut pas être marshalée. Au lieu de cela, le Common Language Runtime tente de charger l’assembly dans le domaine d’application appelant. Les assemblys chargés dans les deux domaines d’application peuvent être différents si les paramètres de chemin d’accès des deux domaines d’application sont différents.

Notes

Si la AssemblyName.Name propriété et la AssemblyName.CodeBase propriété sont définies, la première tentative de chargement de l’assembly utilise le nom d’affichage (y compris la version, la culture, etc., comme retourné par la Assembly.FullName propriété). Si le fichier est introuvable, la CodeBase propriété est utilisée pour rechercher l’assembly. Si l’assembly est trouvé à l’aide CodeBasede , le nom d’affichage est mis en correspondance avec l’assembly. Si la correspondance échoue, un FileLoadException est levée.

Load(String)

Source:

AppDomain.cs

Charge Assembly en fonction de son nom complet.

public:
 System::Reflection::Assembly ^ Load(System::String ^ assemblyString);

public System.Reflection.Assembly Load (string assemblyString);

member this.Load : string -> System.Reflection.Assembly

Public Function Load (assemblyString As String) As Assembly

Paramètres

assemblyString

String

Nom complet de l'assembly. Consultez FullName.

Retours

Assembly

Assembly chargé.

Exceptions

ArgumentNullException

assemblyString a la valeur null.

FileNotFoundException

assemblyString est introuvable.

BadImageFormatException

assemblyString n’est pas un assembly valide pour le runtime actuellement chargé.

AppDomainUnloadedException

L’opération est tentée sur un domaine d’application non chargé.

FileLoadException

Un assembly ou un module a été chargé à deux reprises avec deux preuves différentes.

Remarques

Pour plus d’informations communes à toutes les surcharges de cette méthode, consultez la surcharge de Load(AssemblyName) méthode.

Load(Byte[], Byte[])

Source:

AppDomain.cs

Charge Assembly avec l'image au format COFF (Common Object File Format) contenant un Assembly émis. Les octets bruts représentant les symboles de Assembly sont également chargés.

public:
 System::Reflection::Assembly ^ Load(cli::array <System::Byte> ^ rawAssembly, cli::array <System::Byte> ^ rawSymbolStore);

public System.Reflection.Assembly Load (byte[] rawAssembly, byte[]? rawSymbolStore);

member this.Load : byte[] * byte[] -> System.Reflection.Assembly

Public Function Load (rawAssembly As Byte(), rawSymbolStore As Byte()) As Assembly

Paramètres

rawAssembly

Byte[]

Tableau de type byte qui est une image au format COFF contenant un assembly émis.

rawSymbolStore

Byte[]

Tableau de type byte contenant les octets bruts représentant les symboles de l'assembly.

Retours

Assembly

Assembly chargé.

Exceptions

ArgumentNullException

rawAssembly a la valeur null.

BadImageFormatException

rawAssembly n’est pas un assembly valide pour le runtime actuellement chargé.

AppDomainUnloadedException

L’opération est tentée sur un domaine d’application non chargé.

FileLoadException

Un assembly ou un module a été chargé à deux reprises avec deux preuves différentes.

Exemples

L’exemple suivant illustre l’utilisation du chargement d’un assembly brut.

Pour que cet exemple de code s’exécute, vous devez fournir le nom complet de l’assembly. Pour plus d’informations sur la façon d’obtenir le nom complet de l’assembly, consultez Noms d’assembly.

using namespace System;
using namespace System::IO;
using namespace System::Reflection;
using namespace System::Reflection::Emit;
void InstantiateMyType( AppDomain^ domain )
{
   try
   {
      
      // You must supply a valid fully qualified assembly name here.
      domain->CreateInstance( "Assembly text name, Version, Culture, PublicKeyToken", "MyType" );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}


// Loads the content of a file to a Byte array.
array<Byte>^ loadFile( String^ filename )
{
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   array<Byte>^buffer = gcnew array<Byte>((int)fs->Length);
   fs->Read( buffer, 0, buffer->Length );
   fs->Close();
   return buffer;
}


// Creates a dynamic assembly with symbol information
// and saves them to temp.dll and temp.pdb
void EmitAssembly( AppDomain^ domain )
{
   AssemblyName^ assemblyName = gcnew AssemblyName;
   assemblyName->Name = "MyAssembly";
   AssemblyBuilder^ assemblyBuilder = domain->DefineDynamicAssembly( assemblyName, AssemblyBuilderAccess::Save );
   ModuleBuilder^ moduleBuilder = assemblyBuilder->DefineDynamicModule( "MyModule", "temp.dll", true );
   TypeBuilder^ typeBuilder = moduleBuilder->DefineType( "MyType", TypeAttributes::Public );
   ConstructorBuilder^ constructorBuilder = typeBuilder->DefineConstructor( MethodAttributes::Public, CallingConventions::Standard, nullptr );
   ILGenerator^ ilGenerator = constructorBuilder->GetILGenerator();
   ilGenerator->EmitWriteLine( "MyType instantiated!" );
   ilGenerator->Emit( OpCodes::Ret );
   typeBuilder->CreateType();
   assemblyBuilder->Save( "temp.dll" );
}

ref class Resolver
{
public:
   static Assembly^ MyResolver( Object^ sender, ResolveEventArgs^ args )
   {
      AppDomain^ domain = dynamic_cast<AppDomain^>(sender);
      
      // Once the files are generated, this call is
      // actually no longer necessary.
      EmitAssembly( domain );
      array<Byte>^rawAssembly = loadFile( "temp.dll" );
      array<Byte>^rawSymbolStore = loadFile( "temp.pdb" );
      Assembly^ assembly = domain->Load( rawAssembly, rawSymbolStore );
      return assembly;
   }

};

int main()
{
   AppDomain^ currentDomain = AppDomain::CurrentDomain;
   InstantiateMyType( currentDomain ); // Failed!
   currentDomain->AssemblyResolve += gcnew ResolveEventHandler( Resolver::MyResolver );
   InstantiateMyType( currentDomain ); // OK!
}

using System;
using System.IO;
using System.Reflection;
using System.Reflection.Emit;

class LoadRawSnippet {
   public static void Main() {
      AppDomain currentDomain = AppDomain.CurrentDomain;

      InstantiateMyType(currentDomain);   // Failed!

      currentDomain.AssemblyResolve += new ResolveEventHandler(MyResolver);

      InstantiateMyType(currentDomain);   // OK!
   }

   static void InstantiateMyType(AppDomain domain) {
      try {
     // You must supply a valid fully qualified assembly name here.
         domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType");
      } catch (Exception e) {
         Console.WriteLine(e.Message);
      }
   }

   // Loads the content of a file to a byte array.
   static byte[] loadFile(string filename) {
      FileStream fs = new FileStream(filename, FileMode.Open);
      byte[] buffer = new byte[(int) fs.Length];
      fs.Read(buffer, 0, buffer.Length);
      fs.Close();

      return buffer;
   }

   static Assembly MyResolver(object sender, ResolveEventArgs args) {
      AppDomain domain = (AppDomain) sender;

      // Once the files are generated, this call is
      // actually no longer necessary.
      EmitAssembly(domain);

      byte[] rawAssembly = loadFile("temp.dll");
      byte[] rawSymbolStore = loadFile("temp.pdb");
      Assembly assembly = domain.Load(rawAssembly, rawSymbolStore);

      return assembly;
   }

   // Creates a dynamic assembly with symbol information
   // and saves them to temp.dll and temp.pdb
   static void EmitAssembly(AppDomain domain) {
      AssemblyName assemblyName = new AssemblyName();
      assemblyName.Name = "MyAssembly";

      AssemblyBuilder assemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save);
      ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", true);
      TypeBuilder typeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public);

      ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, null);
      ILGenerator ilGenerator = constructorBuilder.GetILGenerator();
      ilGenerator.EmitWriteLine("MyType instantiated!");
      ilGenerator.Emit(OpCodes.Ret);

      typeBuilder.CreateType();

      assemblyBuilder.Save("temp.dll");
   }
}

open System
open System.IO
open System.Reflection
open System.Reflection.Emit

let instantiateMyType (domain: AppDomain) =
    try
        // You must supply a valid fully qualified assembly name here.
        domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType")
        |> ignore  
    with e ->
        printfn $"{e.Message}"

// Loads the content of a file to a byte array.
let loadFile filename =
    use fs = new FileStream(filename, FileMode.Open)
    let buffer = Array.zeroCreate<byte> (int fs.Length)
    fs.Read(buffer, 0, buffer.Length) |> ignore
    fs.Close()
    buffer

// Creates a dynamic assembly with symbol information
// and saves them to temp.dll and temp.pdb
let emitAssembly (domain: AppDomain) =
    let assemblyName = AssemblyName()
    assemblyName.Name <- "MyAssembly"

    let assemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save)
    let moduleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", true)
    let typeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public)

    let constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, null)
    let ilGenerator = constructorBuilder.GetILGenerator()
    ilGenerator.EmitWriteLine "MyType instantiated!"
    ilGenerator.Emit OpCodes.Ret

    typeBuilder.CreateType() |> ignore

    assemblyBuilder.Save "temp.dll"

let myResolver (sender: obj) (args: ResolveEventArgs) =
    let domain = sender :?> AppDomain

    // Once the files are generated, this call is
    // actually no longer necessary.
    emitAssembly domain

    let rawAssembly = loadFile "temp.dll"
    let rawSymbolStore = loadFile "temp.pdb"
    domain.Load(rawAssembly, rawSymbolStore)

let currentDomain = AppDomain.CurrentDomain

instantiateMyType currentDomain   // Failed!

currentDomain.add_AssemblyResolve (ResolveEventHandler myResolver)

instantiateMyType currentDomain   // OK!

Imports System.IO
Imports System.Reflection
Imports System.Reflection.Emit

Module Test
   
   Sub Main()
      Dim currentDomain As AppDomain = AppDomain.CurrentDomain
      
      InstantiateMyType(currentDomain)      ' Failed!

      AddHandler currentDomain.AssemblyResolve, AddressOf MyResolver
      
      InstantiateMyType(currentDomain)      ' OK!
   End Sub
   
   
   Sub InstantiateMyType(domain As AppDomain)
      Try
     ' You must supply a valid fully qualified assembly name here.
         domain.CreateInstance("Assembly text name, Version, Culture, PublicKeyToken", "MyType")
      Catch e As Exception
         Console.WriteLine(e.Message)
      End Try
   End Sub
   
   
   ' Loads the content of a file to a byte array. 
   Function loadFile(filename As String) As Byte()
      Dim fs As New FileStream(filename, FileMode.Open)
      Dim buffer(CInt(fs.Length - 1)) As Byte
      fs.Read(buffer, 0, buffer.Length)
      fs.Close()
      
      Return buffer
   End Function 'loadFile
   
   
   Function MyResolver(sender As Object, args As ResolveEventArgs) As System.Reflection.Assembly
      Dim domain As AppDomain = DirectCast(sender, AppDomain)
      
      ' Once the files are generated, this call is
      ' actually no longer necessary.
      EmitAssembly(domain)
      
      Dim rawAssembly As Byte() = loadFile("temp.dll")
      Dim rawSymbolStore As Byte() = loadFile("temp.pdb")
      Dim myAssembly As System.Reflection.Assembly = domain.Load(rawAssembly, rawSymbolStore)
      
      Return myAssembly
   End Function 'MyResolver
   
   
   ' Creates a dynamic assembly with symbol information
   ' and saves them to temp.dll and temp.pdb
   Sub EmitAssembly(domain As AppDomain)
      Dim assemblyName As New AssemblyName()
      assemblyName.Name = "MyAssembly"
      
      Dim assemblyBuilder As AssemblyBuilder = domain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Save)
      Dim moduleBuilder As ModuleBuilder = assemblyBuilder.DefineDynamicModule("MyModule", "temp.dll", True)
      Dim typeBuilder As TypeBuilder = moduleBuilder.DefineType("MyType", TypeAttributes.Public)
      
      Dim constructorBuilder As ConstructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, Nothing)
      Dim ilGenerator As ILGenerator = constructorBuilder.GetILGenerator()
      ilGenerator.EmitWriteLine("MyType instantiated!")
      ilGenerator.Emit(OpCodes.Ret)
      
      typeBuilder.CreateType()
      
      assemblyBuilder.Save("temp.dll")
   End Sub

End Module 'Test

Remarques

Pour plus d’informations communes à toutes les surcharges de cette méthode, consultez la surcharge de Load(AssemblyName) méthode.

À compter de .NET Framework 4, le niveau d’approbation d’un assembly chargé à l’aide de cette méthode est identique au niveau d’approbation du domaine d’application.