How to get the GUID of the current user?

Asked Nov 05 '15 at 10:38

Active Nov 05 '15 at 10:46

Viewed 1,877 times

I want to get the Guid of the current user. Here is my code:

System.Security.Principal.IPrincipal User = System.Web.HttpContext.Current.User;
String username = User.Identity.Name.ToString();
System.IO.File.AppendAllText(Server.MapPath("~/logtext.txt"), "username " +   username + Environment.NewLine);
if (username != "")
{
    if (User.Identity.IsAuthenticated)
    {
         MembershipUser user = Membership.GetUser(User.Identity.Name);
         if (user != null) 
         {
              //get the GUID
              Guid guid = (Guid)user.ProviderUserKey;
              System.IO.File.AppendAllText(Server.MapPath("~/logtext.txt"), "Authenticated: " + User.Identity.Name + Environment.NewLine);
         }
    }
}

The MembershipUser return null although the user is authenticated. I also tried to use:

DirectoryEntry entry = new DirectoryEntry();
//entry.Username = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
entry.Username = User.Identity.Name.ToString();
DirectorySearcher searcher = new DirectorySearcher(entry);
searcher.Filter = "(objectclass=user)";

But it does not work without entry.Password (I don't have it).

edited Nov 05 '15 at 10:46

Salah Akbari

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asked Nov 05 '15 at 10:38

o_s

1

Can't you use `User.Identity.GetUserId()`? – Patrick Nov 05 '15 at 10:40
What's this entry.Password you are talking about? It's not in your code, and you state that it does not work without it? – Patrick Nov 05 '15 at 10:42
2

Possible duplicate of [Getting the GUID of the current user?](http://stackoverflow.com/questions/4769313/getting-the-guid-of-the-current-user) – MusicLovingIndianGirl Nov 05 '15 at 10:43
I can't see User.Identity.GetUserId(). – o_s Nov 05 '15 at 11:30
The entry.Password is the password of the user – o_s Nov 05 '15 at 11:31
@o_s it is an extension method, so you need the right using directyive. – Richard Nov 05 '15 at 13:36
insert [`using Microsoft.AspNet.Identity`](https://msdn.microsoft.com/en-us/library/microsoft.aspnet.identity.identityextensions.getuserid%28v=vs.108%29.aspx) in the top of your file. – Patrick Nov 05 '15 at 14:06
@Patrick the name space does not exist – o_s Nov 05 '15 at 15:25
I copied it verbatim from msdn, so it most definitely exists. Maybe you haven't included the correct dll (or nuget package) in your project. – Patrick Nov 05 '15 at 21:18

How to get the GUID of the current user?

0 Answers0