是不是你新建项目的步骤错了参考这个https://blog.csdn.net/u013171226/article/details/119892401?ops_request_misc=&request_id=&biz_id=102&utm_term=visual+studio%E6%96%B0%E5%BB%BAc++%E9%A1%B9%E7%9B%AE&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-0-119892401.142^v34^control,185^v2^tag_show&spm=1018.2226.3001.4187
