c# - 如何替换 Entity Framework FirstOrDefaultAsync

使用ASP.NET身份并使用这样的实体框架将UserStore定制为我自己的数据库表集时

public Task<MyUser> FindByNameAsync(string userName)
{
   var context = new CompanyDbContext();

   Task<MyUser> task = context.MyUsers.Where(u => u.UserName == userName)
                                      .FirstOrDefaultAsync();

   return task;
}

并像这样调用它可以正常工作：

MyUser user = await userManager.FindAsync(context.UserName, context.Password);

现在，我想用如下的硬编码用户列表代替它：

public Task<MyUser> FindByNameAsync(string userName)
{
   var myusers = new List<MyUser>
   {
       new MyUser() { Id="1", UserName = "tom", Password = "secret" },
       new MyUser() { Id="2", UserName = "mary", Password = "supersecret" }
   };

   Task<MyUser> task = new Task<MyUser>(() => myusers.SingleOrDefault(
                                                  u => u.UserName == userName));

   return task;
}

但这行不通，因为它挂在这条线上

MyUser user = await userManager.FindAsync(context.UserName, context.Password);

任何建议，将不胜感激。

最佳答案

尝试这个...

public Task<MyUser> FindByNameAsync(string userName)
{
   var myusers = new List<MyUser>
   {
       new MyUser() { Id="1", UserName = "tom", Password = "secret" },
       new MyUser() { Id="2", UserName = "mary", Password = "supersecret" }
   };

   var task = Task.FromResult(myusers.SingleOrDefault(u => u.UserName == userName));

   return task;
}

关于c# - 如何替换 Entity Framework FirstOrDefaultAsync，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21560758/