How do I get the current username in NET using C

Question

How do I get the current username in  NET using C

User · Answer

Use System Windows Forms SystemInformation UserName for the actually logged in user as     Environment UserName still returns the account being used by the current process

User · Answer

For a Windows Forms app that was to be distributed to several users  many of which log in over vpn  I had tried several ways which all worked for my local machine testing but not for others  I came across a Microsoft article that I adapted and works   using System  using System Security Principal   namespace ManageExclusion       public static class UserIdentity                   concept borrowed from             https   msdn microsoft com en-us library system security principal windowsidentity v vs 110  aspx          public static string GetUser                         IntPtr accountToken   WindowsIdentity GetCurrent   Token              WindowsIdentity windowsIdentity   new WindowsIdentity accountToken               return windowsIdentity Name

User · Answer

The documentation for Environment UserName seems to be a bit conflicting   Environment UserName Property  On the same page it says      Gets the user name of the person who is currently logged on to the Windows operating system    AND     displays the user name of the person who started the current thread   If you test Environment UserName using RunAs  it will give you the RunAs user account name  not the user originally logged on to Windows

User · Answer

string userName   System Security Principal WindowsIdentity GetCurrent   Name

User · Answer

I tried several combinations from existing answers  but they were giving me   DefaultAppPool IIS APPPOOL IIS APPPOOL DefaultAppPool   I ended up using   string vUserName   User Identity Name    Which gave me the actual users domain username only

User · Answer

Just in case someone is looking for user Display Name as opposed to User Name  like me   Here s the treat       System DirectoryServices AccountManagement UserPrincipal Current DisplayName   Add Reference to System DirectoryServices AccountManagement in your project

User · Answer

You may also want to try using   Environment UserName    Like this      string j    Your WindowsXP Account Name is      Environment UserName    Hope this has been helpful

User · Answer

I ve tried all the previous answers and found the answer on MSDN after none of these worked for me  See  UserName4  for the correct one for me   I m after the Logged in User  as displayed by    lt asp LoginName ID  LoginName1  runat  server    gt    Here s a little function I wrote to try them all  My result is in the comments after each row   protected string GetLoggedInUsername         string UserName   System Security Principal WindowsIdentity GetCurrent   Name     Gives NT AUTHORITY SYSTEM     String UserName2   Request LogonUserIdentity Name     Gives NT AUTHORITY SYSTEM     String UserName3   Environment UserName     Gives SYSTEM     string UserName4   HttpContext Current User Identity Name     Gives actual user logged on  as seen in  lt ASP Login   gt       string UserName5   System Windows Forms SystemInformation UserName     Gives SYSTEM     return UserName4      Calling this function returns the logged in username by return   Update  I would like to point out that running this code on my Local server instance shows me that Username4 returns     an empty string   but UserName3 and UserName5 return the logged in User  Just something to beware of

User · Answer

Get the current Windows username   using System   class Sample       public static void Main                 Console WriteLine                  lt -- Keep this information secure  -- gt          Console WriteLine  UserName   0    Environment UserName

User · Answer

Here is the code  but not in C     Private m CurUser As String  Public ReadOnly Property CurrentUser As String     Get         If String IsNullOrEmpty m CurUser  Then             Dim who As System Security Principal IIdentity   System Security Principal WindowsIdentity GetCurrent                If who Is Nothing Then                 m CurUser   Environment UserDomainName  amp       amp  Environment UserName             Else                 m CurUser   who Name             End If         End If         Return m CurUser     End Get End Property   Here is the code  now also in C     private string m CurUser   public string CurrentUser       get               if string IsNullOrEmpty m CurUser                         var who   System Security Principal WindowsIdentity GetCurrent                if  who    null                  m CurUser   System Environment UserDomainName          System Environment UserName              else                 m CurUser   who Name                    return m CurUser

User · Answer

Use   System Security Principal WindowsIdentity GetCurrent   Name   That will be the logon name

User · Answer

I went over most of the answers here and none of them gave me the right user name     In my case I wanted to get the logged in user name  while running my app from a different user  like when shift right click on a file and  Run as a different user      The answers I tried gave me the  other  username     This blog post supplies a way to get the logged in user name  which works even in my scenario  https   smbadiwe github io post track-activities-windows-service     It uses Wtsapi

User · Answer

If you are in a network of users  then the username will be different   Environment UserName - Will Display format    Username    rather than  System Security Principal WindowsIdentity GetCurrent   Name - Will Display format    NetworkName Username    Choose the format you want

User · Answer

try this  ManagementObjectSearcher searcher   new ManagementObjectSearcher  SELECT UserName FROM Win32 ComputerSystem    ManagementObjectCollection collection   searcher Get    string username    string collection Cast lt ManagementBaseObject gt    First    UserName      now it looks better

User · Answer

I totally second the other answers  but I would like to highlight one more method which says  String UserName   Request LogonUserIdentity Name    The above method returned me the username in the format  DomainName UserName  For example  EUROPE UserName  Which is different from   String UserName   Environment UserName    Which displayed in the format  UserName  And finally   String UserName   System Security Principal WindowsIdentity GetCurrent   Name    which gave  NT AUTHORITY IUSR  while running the application on IIS server  and DomainName UserName  while running the application on a local server

User · Answer

String myUserName   Environment UserName   This will give you output - your user name

User · Answer

In case it s helpful to others  when I upgraded an app from c  net 3 5 app to Visual Studio 2017 this line of code User Identity Name Substring 4   threw this error  startIndex cannot be larger than length of string   it didn t baulk before    It was happy when I changed it to System Security Principal WindowsIdentity GetCurrent   Name however I ended up using Environment UserName  to get the logged in Windows user and without the domain portion

User · Answer

Try the property  Environment UserName

[c#] How do I get the current username in .NET using C#?

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