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我試圖通過我的進程中新的AppDomain實例啓動應用程序。這本身工作正常,但我無法卸載AppDomain,如果我開始一個WPF應用程序(CannotUnloadAppDomainException拋出,如果嘗試它)。執行控制檯應用程序或WinForm應用程序,然後卸載AppDomain工作正常。在運行wpf應用程序後無法卸載AppDomain
這是我使用來設置類「InternalExecutableChecker」的應用程序域和觸發代碼的代碼:
var manager = new AppDomainManager();
var setup = new AppDomainSetup
{
ApplicationBase = Path.GetDirectoryName(executablePath),
LoaderOptimization = LoaderOptimization.MultiDomainHost
};
AppDomain domain = manager.CreateDomain(Path.GetFileNameWithoutExtension(executablePath), null, setup);
try
{
domain.Load(Assembly.GetExecutingAssembly().FullName);
var checker = (InternalExecutableChecker)domain.CreateInstanceAndUnwrap(Assembly.GetExecutingAssembly().FullName, typeof(InternalExecutableChecker).FullName);
Logger.Info(checker.Check(executablePath));
}
finally
{
AppDomain.Unload(domain);
}
這是其他域內所執行的InternalExecutableChecker類的代碼(設定和啓動加載要執行的程序集的STA線程,將其設置爲該域的入口程序集,然後調用入口方法)。
public class InternalExecutableChecker : MarshalByRefObject
{
private readonly object _lock = new object();
private string _result;
public string Check(string executablePath)
{
var thread = new Thread(() => InternalCheck(executablePath)) { Name = AppDomain.CurrentDomain.FriendlyName };
thread.SetApartmentState(ApartmentState.STA);
lock (_lock)
{
thread.Start();
Monitor.Wait(_lock);
}
return _result;
}
private void InternalCheck(string executablePath)
{
try
{
Assembly assembly;
try
{
assembly = Assembly.LoadFrom(executablePath);
}
catch (BadImageFormatException)
{
_result = "No 32 bit .NET application";
return;
}
try
{
ModifyEntryAssembly(assembly);
assembly.EntryPoint.Invoke(null, new object[] { });
}
catch (Exception e)
{
_result = e.Message;
}
if (_result == null)
{
_result = "OK";
}
}
finally
{
lock (_lock)
{
Monitor.Pulse(_lock);
}
}
}
private void ModifyEntryAssembly(Assembly assembly)
{
AppDomainManager manager = new AppDomainManager();
FieldInfo entryAssemblyfield = manager.GetType().GetField("m_entryAssembly", BindingFlags.Instance | BindingFlags.NonPublic);
if (entryAssemblyfield == null)
{
throw new Exception("Could not retrieve entryAssemblyField.");
}
entryAssemblyfield.SetValue(manager, assembly);
AppDomain domain = AppDomain.CurrentDomain;
FieldInfo domainManagerField = domain.GetType().GetField("_domainManager", BindingFlags.Instance | BindingFlags.NonPublic);
if (domainManagerField == null)
{
throw new Exception("Could not retrieve domainManagerField.");
}
domainManagerField.SetValue(domain, manager);
}
}