Assembly asm = Assembly.LoadFile("程序集路径");
            foreach (Type t in asm.GetTypes())
            {
                foreach (MethodInfo mi in t.GetMethods(BindingFlags.Static | BindingFlags.Public))
                {
                    foreach (object obj in mi.GetCustomAttributes(false))
                    {
                        if (obj is DllImportAttribute)
                            Console.WriteLine(((DllImportAttribute)obj).Value);
                    }
                }
            }