Asp.net core identity get user id

 public async Task<IActionResult> YourMethodName()
    {
        var userId =  User.FindFirstValue(ClaimTypes.NameIdentifier) // will give the user's userId
        var userName =  User.FindFirstValue(ClaimTypes.Name) // will give the user's userName

        ApplicationUser applicationUser = await _userManager.GetUserAsync(User);
        string userEmail = applicationUser?.Email; // will give the user's Email
    }

.net core identity get user id

public static class ClaimsPrincipalExtensions
{
    public static T GetLoggedInUserId<T>(this ClaimsPrincipal principal)
    {
        if (principal == null)
            throw new ArgumentNullException(nameof(principal));

        var loggedInUserId = principal.FindFirstValue(ClaimTypes.NameIdentifier);

        if (typeof(T) == typeof(string))
        {
            return (T)Convert.ChangeType(loggedInUserId, typeof(T));
        }
        else if (typeof(T) == typeof(int) || typeof(T) == typeof(long))
        {
            return loggedInUserId != null ? (T)Convert.ChangeType(loggedInUserId, typeof(T)) : (T)Convert.ChangeType(0, typeof(T));
        }
        else
        {
            throw new Exception("Invalid type provided");
        }
    }

    public static string GetLoggedInUserName(this ClaimsPrincipal principal)
    {
        if (principal == null)
            throw new ArgumentNullException(nameof(principal));

        return principal.FindFirstValue(ClaimTypes.Name);
    }

    public static string GetLoggedInUserEmail(this ClaimsPrincipal principal)
    {
        if (principal == null)
            throw new ArgumentNullException(nameof(principal));

        return principal.FindFirstValue(ClaimTypes.Email);
    }
}

Source: stackoverflow.com

Similar codes

0 vote338 views1 answer
C# if string in licbox
C#
0 vote335 views1 answer
C# list.except compare classes with IEqualityComparer
C#
9 votes340 views1 answer
The really long string variable is a string in which a very long string is stored
C#
0 vote342 views1 answer
Asp net mvc convert ienumerable to selectlistitem
C#
0 vote311 views1 answer
How to print a word in C#
C#
0 vote345 views1 answer
Drop down list razor example
C#
0 vote404 views1 answer
Unity3d gameobject follow path
C#Unity
0 vote321 views2 answers
Get last id ef
C#
1 vote349 views1 answer
Check if two linked lists merge. If so, where?
C#
1 vote335 views1 answer
C# System.Resources.MissingManifestResourceException error
C#