将类名放在字符串中并不足以创建其实例.事实上，您需要包含类名的完整命名空间来创建对象.

Having the class name in string is not enough to be able to create its instance. As a matter of fact you will need full namespace including class name to create an object.

假设您有以下内容:

string className = "MyClass";
string namespaceName = "MyNamespace.MyInternalNamespace";

您可以使用以下任一技术创建该类的实例，即 MyNamespace.MyInternalNamespace.MyClass 类的对象:

Than you you can create an instance of that class, the object of class MyNamespace.MyInternalNamespace.MyClass using either of the following techniques:

var myObj = Activator.CreateInstance(namespaceName, className);

或者这个:

var myObj = Activator.CreateInstance(Type.GetType(namespaceName + "." + className));

希望有帮助，如果没有，请告诉我.

Hope this helps, please let me know if not.