Environment.UserName Environment.UserName Environment.UserName Environment.UserName Property

Definition

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

public:
 static property System::String ^ UserName { System::String ^ get(); };
public static string UserName { get; }
member this.UserName : string
Public Shared ReadOnly Property UserName As String
Property Value

The user name of the person who is logged on to the operating system.

Examples

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

// Sample for the Environment::UserName property
using namespace System;
int main()
{
   Console::WriteLine();

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

// 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);
    }
}
' 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

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.

On Windows the UserName property wraps a call to the Windows GetUserName function. 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.

On Unix platforms the UserName property wraps a call to the getpwuid_r function.

If an ASP.NET application runs in a development environment, the UserName property returns the name of the current user. In a published ASP.NET application, this property returns the name of the application pool account (such as Default AppPool).

Security

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

Applies to

See Also