下载
下面是程序的main函数：
namespace Microsoft.Samples.Application
{
static class Program
{
static void Main()
{
//Create new appDomain
AppDomain domain = AppDomain.CreateDomain("NewAppDomain");
// Create remote object in new appDomain via shared interface
// to avoid loading the implementation library into this appDomain
IHelloWorld proxy =
(IHelloWorld)domain.CreateInstanceAndUnwrap(
"ImplementationLibrary",
"Microsoft.Samples.ImplementationLibrary.HelloWorld");
// Output results of the call
Console.WriteLine("\nReturn:\n\t{0}", proxy.Echo("Hello"));
Console.WriteLine();
Console.WriteLine("Non-GAC assemblies loaded in {0} appDomain:", AppDomain.CurrentDomain.FriendlyName);
foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
{
if (!assembly.GlobalAssemblyCache)
{
Console.WriteLine("\t" + assembly.GetName().Name);
}
}
Console.WriteLine("\nImplementationLibrary should not be loaded.");
Console.ReadLine();
}
}
}
下面是被load进新创建的Domain的dll：
namespace Microsoft.Samples.ImplementationLibrary
{
internal class HelloWorld : MarshalByRefObject, IHelloWorld
{
#region IHelloWorld Members
string IHelloWorld.Echo(string input)
{
ConsoleColor originalColor = Console.BackgroundColor;
Console.BackgroundColor = ConsoleColor.Blue;
string currentAppDomainName = AppDomain.CurrentDomain.FriendlyName;
Console.WriteLine("AppDomain: {0}", currentAppDomainName);
Console.WriteLine("Echo Input: {0}", input);
Console.WriteLine();
Console.WriteLine("Non-GAC assemblies loaded in {0} appDomain:", AppDomain.CurrentDomain.FriendlyName);
foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
{
if (!assembly.GlobalAssemblyCache)
{
Console.WriteLine("\t" + assembly.GetName().Name);
}
}
Console.BackgroundColor = originalColor;
return input + " from AppDomain: " + currentAppDomainName;
}
#endregion
}
}
程序的输出结果是：
AppDomain: NewAppDomain
Echo Input: Hello
Non-GAC assemblies loaded in NewAppDomain appDomain:
ImplementationLibrary
SharedInterface
Return:
Hello from AppDomain: NewAppDomain
Non-GAC assemblies loaded in Application.vshost.exe appDomain:
vshost
Application
SharedInterface
ImplementationLibrary should not be loaded.
另外解释一下Unwarp()函数的作用，例如ObjectHandleAssembly有一个MyType的类：
// Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
ObjectHandle obj = domain.CreateInstance("ObjectHandleAssembly", "MyType");
// Unwrapps the proxy to the MyType object created in the other AppDomain.
MyType testObj = (MyType)obj.Unwrap();