Asp.net Core Get User by User Id

asp.net-core asp.net-core-identity entity-framework-core

Question

Using Asp.net Core Identity and entity framework core, how can I get an asp.net user object by it's UserId property? I know it's possible to get the current logged in user from the HttpContext.User object using:

UserManager.GetUserAsync(HttpContext.User)

However when an admin is logged in, I want them to be able to access/modify any user's data in order to update user Emails and PhoneNumbers, which by default are part of the asp.net user object.

Ideally I'd like to be able to do something like:

var userRecord = _userManager.GetUserById(model.userId);
//update user record
userRecord.Email = model.Email;
userRecord.PhoneNumber = model.PhoneNumber;

var newRecord = await _userManager.UpdateAsync(userRecord);

but obvisously, the UserManager.GetUserById() method does not currently exist.

1
12
12/27/2016 7:10:58 PM

Accepted Answer

You can use FindByIdAsync for that:

var user = await _userManager.FindByIdAsync(model.userId);
21
12/27/2016 7:26:45 PM

Popular Answer

You can get the current user one of this ways:

// Get the current user ID from the user claims (no DB hit)    
int currentUserId = int.Parse(User.FindFirst(Claims.UserId).Value);

And then retrieve the current user entity:

// Either via DB context:
var currentUser = _context.Users.FirstOrDefault(u => u.Id == currentUserId);

// or via Usermanager:
var sameUser = UserManager.Users.FirstOrDefault(u => u.Id == currentUserId);

Or just this way:

var currentUser = UserManager.Users.FirstOrDefault(u => u.UserName == User.Identity.Name);


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