AppDomain.ClearShadowCopyPath 方法

注意：此方法现在已过时。

将包含影像复制的程序集的目录列表重置为空字符串 ("")。

**命名空间:**System
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
<ObsoleteAttribute("AppDomain.ClearShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. https://go.microsoft.com/fwlink/?linkid=14202")> _
Public Sub ClearShadowCopyPath
用法
Dim instance As AppDomain

instance.ClearShadowCopyPath

[ObsoleteAttribute("AppDomain.ClearShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. https://go.microsoft.com/fwlink/?linkid=14202")] 
public void ClearShadowCopyPath ()

[ObsoleteAttribute(L"AppDomain.ClearShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. https://go.microsoft.com/fwlink/?linkid=14202")] 
public:
virtual void ClearShadowCopyPath () sealed

/** @attribute ObsoleteAttribute("AppDomain.ClearShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. https://go.microsoft.com/fwlink/?linkid=14202") */ 
public final void ClearShadowCopyPath ()

ObsoleteAttribute("AppDomain.ClearShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. https://go.microsoft.com/fwlink/?linkid=14202") 
public final function ClearShadowCopyPath ()

异常

异常类型	条件
AppDomainUnloadedException	试图对已卸载的应用程序域进行操作。

备注

影像副本路径是目录列表，在这些目录中存储影像复制的程序集。

有关更多信息，请参见 AppDomainSetup.ShadowCopyDirectories。

示例

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

Class ADShadowCopy
   
   'Entry point which delegates to C-style main Private Function
   ' Public Overloads Shared Sub Main()
    '  Main(System.Environment.GetCommandLineArgs())
   ' End Sub
   
   Public Overloads Shared Sub Main(args() As String)
      
      Dim setup As New AppDomainSetup()
      ' Shadow copying will not work unless the application has a name.
      setup.ApplicationName = "MyApplication"
      
      'Create evidence for the new application domain from evidence of
      ' current application domain.
      Dim adevidence As Evidence = AppDomain.CurrentDomain.Evidence
      
      ' Create a new application domain.
      Dim domain As AppDomain = AppDomain.CreateDomain("MyDomain", adevidence, setup)
      
      ' MyAssembly.dll is located in the Assemblies subdirectory.
      domain.AppendPrivatePath("Assemblies")
      ' MyOtherAssembly.dll and MyThirdAssembly.dll are located in the
      ' MoreAssemblies subdirectory.
      domain.AppendPrivatePath("MoreAssemblies")
      ' Display the relative search path.
      Console.WriteLine(("RelativeSearchPath: " + domain.RelativeSearchPath))
      ' Because Load returns an Assembly object, the assemblies must be
      ' loaded into the current domain as well. This will fail unless the
      ' current domain also has these directories in its search path.
      AppDomain.CurrentDomain.AppendPrivatePath("Assemblies")
      AppDomain.CurrentDomain.AppendPrivatePath("MoreAssemblies")
      
      ' Save shadow copies to C:\Cache
      domain.SetCachePath("C:\Cache")
      ' Shadow copy only the assemblies in the Assemblies directory.
      domain.SetShadowCopyPath((domain.BaseDirectory + "Assemblies"))
      ' Turn shadow copying on.
      domain.SetShadowCopyFiles()
      
      ' This will be copied.
      ' You must supply a valid fully qualified assembly name here. 
      domain.Load("Assembly1 text name, Version, Culture, PublicKeyToken")
      ' This will not be copied.
      ' You must supply a valid fully qualified assembly name here. 
      domain.Load("Assembly2 text name, Version, Culture, PublicKeyToken")
      
      ' When the shadow copy path is cleared, the CLR will make shadow copies
      ' of all private assemblies.
      domain.ClearShadowCopyPath()
      ' MoreAssemblies\MyThirdAssembly.dll should be shadow copied this time.
      ' You must supply a valid fully qualified assembly name here.
      domain.Load("Assembly3 text name, Version, Culture, PublicKeyToken")
      
      ' Unload the domain.
      AppDomain.Unload(domain)
   End Sub 'Main
End Class 'ADShadowCopy

using System;
using System.Security.Policy;  //for evidence object
namespace AppDomainSnippets
{
    class ADShadowCopy
    {
        static void Main(string[] args)
        {

            AppDomainSetup setup = new AppDomainSetup();
            // Shadow copying will not work unless the application has a name.
            setup.ApplicationName = "MyApplication";

            //Create evidence for the new application domain from evidence of
            // current application domain.
            Evidence adevidence = AppDomain.CurrentDomain.Evidence;
            
            // Create a new application domain.
            AppDomain domain = AppDomain.CreateDomain("MyDomain", adevidence, setup);
            
            // MyAssembly.dll is located in the Assemblies subdirectory.
            domain.AppendPrivatePath("Assemblies");
            // MyOtherAssembly.dll and MyThirdAssembly.dll are located in the
            // MoreAssemblies subdirectory.
            domain.AppendPrivatePath("MoreAssemblies");
            // Display the relative search path.
            Console.WriteLine("RelativeSearchPath: " + domain.RelativeSearchPath);
            // Because Load returns an Assembly object, the assemblies must be
            // loaded into the current domain as well. This will fail unless the
            // current domain also has these directories in its search path.
            AppDomain.CurrentDomain.AppendPrivatePath("Assemblies");
            AppDomain.CurrentDomain.AppendPrivatePath("MoreAssemblies");
            
            // Save shadow copies to C:\Cache
            domain.SetCachePath("C:\\Cache");
            // Shadow copy only the assemblies in the Assemblies directory.
            domain.SetShadowCopyPath(domain.BaseDirectory + "Assemblies");
            // Turn shadow copying on.
            domain.SetShadowCopyFiles();
            
            // This will be copied.
            // You must supply a valid fully qualified assembly name here. 
            domain.Load("Assembly1 text name, Version, Culture, PublicKeyToken");
            // This will not be copied.
            // You must supply a valid fully qualified assembly name here. 
            domain.Load("Assembly2 text name, Version, Culture, PublicKeyToken");
            
            // When the shadow copy path is cleared, the CLR will make shadow copies
            // of all private assemblies.
            domain.ClearShadowCopyPath();
            // MoreAssemblies\MyThirdAssembly.dll should be shadow copied this time.
            // You must supply a valid fully qualified assembly name here.
            domain.Load("Assembly3 text name, Version, Culture, PublicKeyToken");
            
            // Unload the domain.
            AppDomain.Unload(domain);
        }
    }
}

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

//for evidence Object*
int main()
{
   AppDomainSetup^ setup = gcnew AppDomainSetup;
   
   // Shadow copying will not work unless the application has a name.
   setup->ApplicationName = "MyApplication";
   
   //Create evidence for the new application domain from evidence of
   // current application domain.
   Evidence^ adevidence = AppDomain::CurrentDomain->Evidence;
   
   // Create a new application domain.
   AppDomain^ domain = AppDomain::CreateDomain( "MyDomain", adevidence, setup );
   
   // MyAssembly.dll is located in the Assemblies subdirectory.
   domain->AppendPrivatePath( "Assemblies" );
   
   // MyOtherAssembly.dll and MyThirdAssembly.dll are located in the
   // MoreAssemblies subdirectory.
   domain->AppendPrivatePath( "MoreAssemblies" );
   
   // Display the relative search path.
   Console::WriteLine( "RelativeSearchPath: {0}", domain->RelativeSearchPath );
   
   // Because Load returns an Assembly Object*, the assemblies must be
   // loaded into the current domain as well. This will fail unless the
   // current domain also has these directories in its search path.
   AppDomain::CurrentDomain->AppendPrivatePath( "Assemblies" );
   AppDomain::CurrentDomain->AppendPrivatePath( "MoreAssemblies" );
   
   // Save shadow copies to C:\Cache
   domain->SetCachePath( "C:\\Cache" );
   
   // Shadow copy only the assemblies in the Assemblies directory.
   domain->SetShadowCopyPath( String::Concat( domain->BaseDirectory, "Assemblies" ) );
   
   // Turn shadow copying on.
   domain->SetShadowCopyFiles();
   
   // This will be copied.
   // You must supply a valid fully qualified assembly name here.
   domain->Load( "Assembly1 text name, Version, Culture, PublicKeyToken" );
   
   // This will not be copied.
   // You must supply a valid fully qualified assembly name here.
   domain->Load( "Assembly2 text name, Version, Culture, PublicKeyToken" );
   
   // When the shadow copy path is cleared, the CLR will make shadow copies
   // of all private assemblies.
   domain->ClearShadowCopyPath();
   
   // MoreAssemblies\MyThirdAssembly.dll should be shadow copied this time.
   // You must supply a valid fully qualified assembly name here.
   domain->Load( "Assembly3 text name, Version, Culture, PublicKeyToken" );
   
   // Unload the domain.
   AppDomain::Unload( domain );
}

.NET Framework 安全性

• SecurityPermission  表示创建和操作应用程序域的能力。关联的枚举：SecurityPermissionFlag.ControlAppDomain。

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：1.0、1.1
在 2.0 中过时（编译器警告）

请参见

参考

AppDomain 类
AppDomain 成员
System 命名空间
String.Empty