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AppDomain.SetShadowCopyFiles Method

Turns on shadow copying.

[Visual Basic]
Public Sub SetShadowCopyFiles()
[C#]
public void SetShadowCopyFiles();
[C++]
public: void SetShadowCopyFiles();
[JScript]
public function SetShadowCopyFiles();

Exceptions

Exception Type Condition
AppDomainUnloadedException Operations are attempted on an unloaded application domain.
SecurityException The caller does not have the correct permissions. See the requirements section.

Example

[Visual Basic] 
Imports System
Imports System.Security.Policy
 'for evidence object

Class ADProperties
    
    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()
        Console.WriteLine("ShadowCopyFiles turned on: " & domain.ShadowCopyFiles)
        
        ' 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 'ADProperties

[C#] 
using System;
using System.Security.Policy;  //for evidence object
namespace AppDomainSnippets
{
    class ADProperties
    {
        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();
            Console.WriteLine("ShadowCopyFiles turned on: " + domain.ShadowCopyFiles);

            // 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);
        }
    }
}

[C++] 
#using <mscorlib.dll>
using namespace System;
using namespace System::Security::Policy;  //for evidence object

int main()
{

   AppDomainSetup* setup = new AppDomainSetup();
   // Shadow copying will not work unless the application has a name.
   setup->ApplicationName = S"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(S"MyDomain", adevidence, setup);

   // MyAssembly.dll is located in the Assemblies subdirectory.
   domain->AppendPrivatePath(S"Assemblies");
   // MyOtherAssembly.dll and MyThirdAssembly.dll are located in the
   // MoreAssemblies subdirectory.
   domain->AppendPrivatePath(S"MoreAssemblies");
   // Display the relative search path.
   Console::WriteLine(S"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(S"Assemblies");
   AppDomain::CurrentDomain->AppendPrivatePath(S"MoreAssemblies");

   // Save shadow copies to C:\Cache
   domain->SetCachePath(S"C:\\Cache");
   // Shadow copy only the assemblies in the Assemblies directory.
   domain->SetShadowCopyPath(String::Concat( domain->BaseDirectory, S"Assemblies" ));
   // Turn shadow copying on.
   domain->SetShadowCopyFiles();
   Console::WriteLine(S"ShadowCopyFiles turned on: {0}", __box(domain->ShadowCopyFiles));

   // This will be copied.
   // You must supply a valid fully qualified assembly name here. 
   domain->Load(S"Assembly1 text name, Version, Culture, PublicKeyToken");
   // This will not be copied.
   // You must supply a valid fully qualified assembly name here. 
   domain->Load(S"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(S"Assembly3 text name, Version, Culture, PublicKeyToken");

   // Unload the domain.
   AppDomain::Unload(domain);
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

.NET Framework Security: 

See Also

AppDomain Class | AppDomain Members | System Namespace

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