How can i find the current user id logged in .Net Core

Question

I'm trying to get the current user id logged in so I can pull details down for this user as well assign details to the user e.g. booking events, seeing events they have booked, etc.

I have been trying to do like this

var USERID = User.Claims.FirstOrDefault(c => c.Type == "Id")

but I get an error when trying to assign to int.

I have my service method within my data project connecting to db then I pass these methods from the service into the controller, if that helps at all.

Any help would be great.

"I get an error..." What is the error then? It **never** helps to say "I have an error". Error messages are there for a reason. — Mohammad Dehghan, Apr 13 '20 at 07:58
"Cannot implicitly convert type "System.Security.Claims.Claim" to "int" — pabs095, Apr 13 '20 at 08:03
See here: [How to get the current logged in user Id in ASP.NET Core](https://stackoverflow.com/questions/30701006/how-to-get-the-current-logged-in-user-id-in-asp-net-core). Or: `var userId = Int.Parse(User.Claims.FirstOrDefault(c => c.Type == "Id").Value);`? I'm not sure if `c.Type == "Id"` is correct. — Mohammad Dehghan, Apr 13 '20 at 08:08
Maybe it helps you. follow this link : https://stackoverflow.com/questions/51765214/get-user-id-in-asp-net-core-2 — ssmmoo, Apr 13 '20 at 12:08

score 0 · Answer 1 · answered Apr 13 '20 at 12:52

0

The correct way to do this is via User.FindFirstValue(ClaimTypes.NameIdentifier).

answered Apr 13 '20 at 12:52

Chris Pratt

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score 0 · Accepted Answer · answered Apr 13 '20 at 15:12

You can use the IHttpContextAccessor to access to HttpContext and get Current UserId like this

public int GetCurrentUserId()
{
    var claimsIdentity = _contextAccessor.HttpContext.User.Identity as ClaimsIdentity;
    var userDataClaim = claimsIdentity?.FindFirst("Id");//or claimsIdentity?.FindFirst(ClaimTypes.NameIdentifier);
    var userId = userDataClaim?.Value;
    return string.IsNullOrWhiteSpace(userId) ? 0 : int.Parse(userId);
}

Or

int userId = Convert.ToInt32((User.Identity as ClaimsIdentity).FindFirst(ClaimTypes.Name).Value);

How can i find the current user id logged in .Net Core

2 Answers2