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c#asp.netactivator

How to create an instance of a type defined in a Web Site Project (App_Code) from another library

I'm trying to create an instance of type defined in a Web Site Project. The type name is configurable, so therefor known, but for the assembly name is not possible to tell the name at the configuration moment, since the Web Site Project is compiled by ASP .Net.

var typeName = ConfigurationManager.AppSettings["typeName"];
var assemblyName = '.. get the assembly name ..';

var instance = Activator.CreateInstance(assemblyName, typeName);
return (IUserCredentials)instance.Unwrap();

Is any easy way to use this CreateInstance overload or shall I search through all loaded types and find it by name?

This code is used in another library, which is referenced in the Web Site Project.

Solution

  • App_Code is the name assigned to the assembly that contains types residing in the App_Code directory types, so you should:

    string assemblyName = "App_Code";