.NET Framework Class Library
Environment..::.UserName Property

Gets the user name of the person who is currently logged on to the Windows operating system.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
Syntax

Visual Basic (Declaration)
Public Shared ReadOnly Property UserName As String
Visual Basic (Usage)
Dim value As String

value = Environment.UserName
C#
public static string UserName { get; }
Visual C++
public:
static property String^ UserName {
    String^ get ();
}
JScript
public static function get UserName () : String

Property Value

Type: System..::.String
The user name of the person who is logged on to Windows.
Remarks

The UserName property provides part of the credentials associated with computer domain names, as returned by the UserDomainName property. This information is typically represented as DOMAIN\username.

This property can be used to identify the current user to the system and application for security or access purposes. It can also be used to customize a particular application for each user.

Examples

The following code example displays the user name of the person who started the current thread.

Visual Basic
' Sample for the Environment.UserName property
Imports System

Class Sample
   Public Shared Sub Main()
      Console.WriteLine()
      '  <-- Keep this information secure! -->
      Console.WriteLine("UserName: {0}", Environment.UserName)
   End Sub 'Main
End Class
C#
// Sample for the Environment.UserName property
using System;

class Sample
{
    public static void Main()
    {
    Console.WriteLine();
//  <-- Keep this information secure! -->
    Console.WriteLine("UserName: {0}", Environment.UserName);
    }
}
Visual C++
// Sample for the Environment::UserName property
using namespace System;
int main()
{
   Console::WriteLine();

   //  <-- Keep this information secure! -->
   Console::WriteLine( "UserName: {0}", Environment::UserName );
}

.NET Framework Security

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
See Also

Reference

Tags :


Community Content

Tatworth
Documentation bug

This function returns the user name of the user associated with the current thread.


Bruce Hamilton - MSFT
Confused?

"The UserName property provides part of the credentials associated with computer domain names, as returned by the UserDomainName property. This information is typically represented as DOMAIN\username."

In English. A logged in user is defined as DOMAIN\USERNAME. This property returns the USERNAME portion only. For the DOMAIN portion use the UserDomainName property.


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