Get UserName by UserId and display in View

问题

In an ASP.NET MVC 5 application how would I go about getting a Username from a given UserId and display it in a View?

Note - I do not need the Username of the current User.

回答1:

Based on your comment, you are using ASP.Net Identity. I assume you already have ApplicationUserManager. For example,

private ApplicationUserManager _userManager;
protected ApplicationUserManager UserManager
{
    get { return _userManager ?? (_userManager = 
     HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>()); }
}

Then you can call FindById method.

var user = UserManager.FindById(id);
string username = user.UserName;

来源：https://stackoverflow.com/questions/32828744/get-username-by-userid-and-display-in-view