Creating an instance from a class name

问题

I'm trying to create an instance of a class at run time. The classes I'm trying to create all inherit from a base class, ConfigMgrObj, and are named ConfigMgr_xxxxxx e.g. ConfigMgr_Collection. They all take a special object that I'm calling oController and a string as arguments.

This is the line I'm using to do it, where ClassToGet is a string that contains the name of the class e.g. ConfigMgr_Collection.

object oNewObject = System.Activator.CreateInstance(null, "StackOverflowNamespace." + ClassToGet, new object[] { oController, ClassToGet });

This throws a TypeLoadException exception. What's up with it?

回答1:

Are the types you're trying to instantiate actually declared within the same assembly? Passing null as the first parameter is telling Activator that the types live in the current assembly.

回答2:

Looks like it did not find the the class named "StackOverflowNamespace."+ClassToGet in the current assembly.

来源：https://stackoverflow.com/questions/177154/creating-an-instance-from-a-class-name