System.Diagnostics.SymbolStore.CreateSymClass.CreateClass C# (CSharp) Method

        static public IntPtr CreateClass(Guid rclsid, Guid riid)
        {
            IntPtr classFactory;
            IntPtr objCreatedObject;

            COMException Exception;
            // Create a local copy so that we can pass it's reference
            Guid IClassFactory = IID_IClassFactory;
            int hr;
            hr = DllGetClassObject(ref rclsid, ref IClassFactory, out classFactory);
            try
            {
                if (hr < 0)
                {
                    Exception = new COMException("Call to DllGetClassObject failed.", hr);
                    throw Exception;
                }
                hr = ClassFactory_CreateInstance(classFactory, ref riid, out objCreatedObject);
                if (hr < 0)
                {
                    Exception = new COMException("Call to CreateInstance failed.", hr);
                    throw Exception;
                }
            }
            finally
            {
                ClassFactory_Release(classFactory);
            }

            return objCreatedObject;
        }
    }