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AppDomain::AssemblyLoad Event

Occurs when an assembly is loaded.

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

virtual  event AssemblyLoadEventHandler^ AssemblyLoad {
	void add (AssemblyLoadEventHandler^ value);
	void remove (AssemblyLoadEventHandler^ value);



The AssemblyLoadEventHandler delegate for this event indicates what assembly was loaded.

To register an event handler for this event, you must have the required permissions, or a SecurityException is thrown.

For more information about handling events, see Consuming Events.

The following sample demonstrates the AssemblyLoad event.

For this code example to run, you must provide the fully qualified assembly name. For information about how to obtain the fully qualified assembly name, see Assembly Names.

using namespace System;
using namespace System::Reflection;
ref class Test
   static void MyAssemblyLoadEventHandler( Object^ sender, AssemblyLoadEventArgs^ args )
      Console::WriteLine( "ASSEMBLY LOADED: {0}", args->LoadedAssembly->FullName );


void PrintLoadedAssemblies( AppDomain^ domain )
   Console::WriteLine( "LOADED ASSEMBLIES:" );
   System::Collections::IEnumerator^ myEnum = domain->GetAssemblies()->GetEnumerator();
   while ( myEnum->MoveNext() )
      Assembly^ a = safe_cast<Assembly^>(myEnum->Current);
      Console::WriteLine( a->FullName );


int main()
   AppDomain^ currentDomain = AppDomain::CurrentDomain;
   currentDomain->AssemblyLoad += gcnew AssemblyLoadEventHandler( Test::MyAssemblyLoadEventHandler );
   PrintLoadedAssemblies( currentDomain );

   // Lists mscorlib and this assembly
   // You must supply a valid fully qualified assembly name here.
   currentDomain->CreateInstance( "System.Windows.Forms, Version, Culture, PublicKeyToken", "System.Windows.Forms.TextBox" );

   // Loads System, System::Drawing, System::Windows::Forms
   PrintLoadedAssemblies( currentDomain );

   // Lists all five assemblies

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

  • SecurityCriticalAttribute 

    Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.