CannotUnloadAppDomainException クラスとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

CannotUnloadAppDomainException クラス

アプリケーションドメインをアンロードしようとして失敗した場合にスローされる例外。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Class CannotUnloadAppDomainException
    Inherits SystemException

Visual Basic (使用法)

Dim instance As CannotUnloadAppDomainException

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public class CannotUnloadAppDomainException
 : SystemException

C++

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public ref class CannotUnloadAppDomainException
 : public SystemException

/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public class CannotUnloadAppDomainException
 extends SystemException

JScript

SerializableAttribute 
ComVisibleAttribute(true) 
public class CannotUnloadAppDomainException
 extends SystemException

解説

CannotUnloadAppDomainException は、次のアプリケーションドメインをアンロードしようとした場合にスローされます。

アプリケーションの有効期間中は読み込まれた状態でなければならない既定のアプリケーションドメイン。
すぐには停止できない実行中のスレッドがあるアプリケーションドメイン。
既にアンロードされているアプリケーションドメイン。

CannotUnloadAppDomainException は、値 0x80131015 を保持する HRESULT COR_E_CANNOTUNLOADAPPDOMAIN を使用します。

CannotUnloadAppDomainException のインスタンスの初期プロパティ値の一覧については、CannotUnloadAppDomainException コンストラクタのトピックを参照してください。

使用例

Visual Basic

Imports System
Imports System.Reflection
Imports System.Security.Policy
'Imports System.Data
 'for evidence object

Class ADMultiDomain
   
   ' The following attribute indicates to loader that multiple application
 
   ' domains are used in this application.
   <LoaderOptimizationAttribute(LoaderOptimization.MultiDomainHost)>  _
   Public Shared Sub Main()
      ' Create application domain setup information for new application
 domain.
      Dim domaininfo As New
 AppDomainSetup()
      domaininfo.ApplicationBase = System.Environment.CurrentDirectory
      domaininfo.ApplicationName = "MyMultiDomain Application"
      
      'Create evidence for the new appdomain from evidence of current
 application domain.
      Dim adevidence As Evidence = AppDomain.CurrentDomain.Evidence
      
      ' Create appdomain.
      Dim newDomain As AppDomain = AppDomain.CreateDomain("MyMultiDomain",
 adevidence, domaininfo)
      
      'Load an assembly into the new application domain.
      Dim w As Worker = CType( _
         newDomain.CreateInstanceAndUnwrap( _
            [Assembly].GetExecutingAssembly().GetName().Name, _
            "Worker"), _
         Worker) 
      w.TestLoad()
      
      'Unload the application domain, which also unloads the assembly.
      AppDomain.Unload(newDomain)
      
   End Sub 'Main
End Class 'ADMultiDomain

Class Worker
   Inherits MarshalByRefObject

   Friend Sub TestLoad()
      ' You must supply a valid assembly display name here.
      [Assembly].Load("Text assembly name, Culture, PublicKeyToken,
 Version")

      For Each assem As
 [Assembly] In AppDomain.CurrentDomain.GetAssemblies()
         Console.WriteLine(assem.FullName)
      Next
   End Sub
End Class

using System;
using System.Reflection;
using System.Security.Policy;  //for evidence object

class ADMultiDomain
{
   // The following attribute indicates to loader that multiple application
 
   // domains are used in this application.
   [LoaderOptimizationAttribute( LoaderOptimization.MultiDomainHost)]
   public static void Main()
   {
      // Create application domain setup information for new application
 domain.
      AppDomainSetup domaininfo = new AppDomainSetup();
      domaininfo.ApplicationBase = System.Environment.CurrentDirectory;
      domaininfo.ApplicationName = "MyMultiDomain Application";

      //Create evidence for the new appdomain from evidence of current
 application domain.
      Evidence adevidence = AppDomain.CurrentDomain.Evidence;

      // Create appdomain.
      AppDomain newDomain = AppDomain.CreateDomain("MyMultiDomain", adevidence,
 domaininfo);

      // Load an assembly into the new application domain.
      Worker w = (Worker) newDomain.CreateInstanceAndUnwrap( 
         Assembly.GetExecutingAssembly().GetName().Name,
         "Worker"
      );
      w.TestLoad();

      //Unload the application domain, which also unloads the assembly.
      AppDomain.Unload(newDomain);
   }
}

class Worker : MarshalByRefObject
{
   internal void TestLoad()
   {
      // You must supply a valid fully qualified assembly name here.
      Assembly.Load("Text assembly name, Culture, PublicKeyToken, Version");
      foreach (Assembly assem in AppDomain.CurrentDomain.GetAssemblies())
         Console.WriteLine(assem.FullName);
   }
}

C++

using namespace System;
using namespace System::Reflection;
using namespace System::Security::Policy;

ref class Worker : MarshalByRefObject
{
public:
   void TestLoad()
   {
      // You must supply a valid fully qualified assembly name here.
      Assembly::Load("Text assembly name, Culture, PublicKeyToken, Version");
      for each (Assembly^ assem in AppDomain::CurrentDomain->GetAssemblies())
         Console::WriteLine(assem->FullName);
   }
};

//for evidence Object*
// The following attribute indicates to loader that multiple application
// domains are used in this application.

[LoaderOptimizationAttribute(LoaderOptimization::MultiDomainHost)]
int main()
{
   
   // Create application domain setup information for new application
 domain.
   AppDomainSetup^ domaininfo = gcnew AppDomainSetup;
   domaininfo->ApplicationBase = System::Environment::CurrentDirectory;
   domaininfo->ApplicationName = "MyMultiDomain Application";
   
   //Create evidence for the new appdomain from evidence of current
 application domain.
   Evidence^ adevidence = AppDomain::CurrentDomain->Evidence;
   
   // Create appdomain.
   AppDomain^ newDomain = AppDomain::CreateDomain( "MyMultiDomain", adevidence,
 domaininfo );
   
   // Load an assembly into the new application domain.
   Worker^ w = (Worker^) newDomain->CreateInstanceAndUnwrap(
      Assembly::GetExecutingAssembly()->GetName()->Name,
      "Worker"
   );
   w->TestLoad();

   //Unload the application domain, which also unloads the assembly.
   AppDomain::Unload(newDomain);
}