This documentation is archived and is not being maintained.

AppDomain.SetShadowCopyFiles Method

NOTE: This API is now obsolete. The non-obsolete alternative is ShadowCopyFiles.

Turns on shadow copying.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[ObsoleteAttribute("AppDomain.SetShadowCopyFiles has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyFiles instead.")]
[SecurityPermissionAttribute(SecurityAction.LinkDemand, ControlAppDomain = true)]
public void SetShadowCopyFiles()


The operation is attempted on an unloaded application domain.

For more information on shadow copying, see Shadow Copying Assemblies.

This method is now obsolete, and should not be used for new development.

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.
			// MyOtherAssembly.dll and MyThirdAssembly.dll are located in the 
			// MoreAssemblies subdirectory.
			// 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.
			// Save shadow copies to C:\Cache
			// Shadow copy only the assemblies in the Assemblies directory.
			domain.SetShadowCopyPath(domain.BaseDirectory + "Assemblies");
			// Turn shadow copying on.
			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.
			// 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.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 1.1, 1.0
Obsolete (compiler warning) in 3.5
Obsolete (compiler warning) in 3.5 SP1
Obsolete (compiler warning) in 3.0
Obsolete (compiler warning) in 3.0 SP1
Obsolete (compiler warning) in 3.0 SP2
Obsolete (compiler warning) in 2.0
Obsolete (compiler warning) in 2.0 SP1
Obsolete (compiler warning) in 2.0 SP2