Environment.SystemDirectory Property

An example of the value returned is the string "C:\WinNT\System32".

The following example displays the system directory of the computer that runs the code example. (The system directory is omitted from the example output for security reasons.)

// Sample for the Environment.SystemDirectory property 
using System;

class Sample 
{
    public static void Main() 
    {
    Console.WriteLine();
//  <-- Keep this information secure! -->
    Console.WriteLine("SystemDirectory: {0}", Environment.SystemDirectory);
    }
}
/*
This example produces the following results:

SystemDirectory: C:\WINNT\System32
*/

.NET Framework

.NET Framework Client Profile

• FileIOPermission 

  for access to the information in the path itself. Associated enumeration: FileIOPermissionAccess.PathDiscovery

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference