Environment.UserName Property (System)

UserName Property

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.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

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

You can use the UserName property to identify the user on the current thread, to the system and application for security or access purposes. It can also be used to customize a particular application for each user.

The domain account credentials for a user are formatted as the user's domain name, the '\' character, and user name. Use the UserDomainName property to obtain the user's domain name and the UserName property to obtain the user name. A user name is typically an abbreviated combination of the user's first and last names.

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

// 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

EnvironmentPermission
for read access to the USERNAME environment variable. Associated enumeration: EnvironmentPermissionAccess..::.Read

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

Reference

Environment Class

Environment Members

System Namespace