asked on

Load assembly from a file into app domain

How do I load assembly from a file into app domain? I need to load into a non-current app domain so I could unload the domain (and the loaded assembly in it) and then load another version of the assembly.

Here's what I have so far:

AppDomainSetup appDomainSetup = new AppDomainSetup( );
AppDomainSetup appDomainSetup.ShadowCopyFiles = "true";
AppDomainSetup appDomainSetup.ApplicationBase = @"c:\Documents and Settings\user\Local Settings\Temp";

AppDomain appDomain = AppDomain.CreateDomain( "Test", null, appDomainSetup );
string filePath = @"C:\Documents and Settings\user\Local Settings\Temp\Test.dll";
string typeName = "Test.TestAssembly";
object o = appDomain.CreateInstanceFromAndUnwrap( filePath, typeName );

The latest error I'm getting is "Type is not resolved for member 'Test.TestAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'".

Thanks

gbzhhu

Your classs TestAssembly needs to inherit from MarshalByRefObject for this to work. Cross appdomain calls are marshalled by the .NET Remoting

gromul

ASKER

What if the TestAssembly class already inherits from another class over which I don't have control? Can interfaces be used as an alternative? I tried implementing ISerializable but that didn't work.

Thanks

ASKER CERTIFIED SOLUTION

gbzhhu

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