public IActionResult Create(string Title)
 {
     var contest = new Contest
     {
         Begin = new DateTime(2099,1,1),
         End = new DateTime(2099,1,2),
         Title = Title
     };
     DB.Contests.Add(contest);
     DB.SaveChanges();
     return RedirectToAction("Edit", "Contest", new { id = contest.Id });
 }
 public IActionResult Edit(string id, Contest Model)
 {
     var ret = DB.Contests
         .Where(x => x.Id == id)
         .SingleOrDefault();
     if (ret == null)
         return Prompt(x =>
         {
             x.Title = "资源没有找到";
             x.Details = "您请求的资源没有找到,请返回重试!";
             x.StatusCode = 404;
         });
     ret.Description = Model.Description;
     ret.Begin = Model.Begin;
     ret.End = Model.End;
     ret.Title = Model.Title;
     DB.SaveChanges();
     return Prompt(x =>
     {
         x.Title = "修改成功";
         x.Details = "比赛信息已经修改成功!";
     });
 }