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.NET Development
.NET Framework 3.5
System Namespace
Environment Class
 OSVersion 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..::.OSVersion Property

Gets an OperatingSystem object that contains the current platform identifier and version number.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
Visual Basic (Declaration)
Public Shared ReadOnly Property OSVersion As OperatingSystem
Visual Basic (Usage)
Dim value As OperatingSystem

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

Property Value

Type: System..::.OperatingSystem
An OperatingSystem object.
ExceptionCondition
InvalidOperationException

This property was unable to obtain the system version.

-or-

The obtained platform identifier is not a member of PlatformID.

The following code example displays the platform identifier and version number of the computer that runs the code example.

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

Class Sample
   Public Shared Sub Main()
      Console.WriteLine()
      Console.WriteLine("OSVersion: {0}", Environment.OSVersion.ToString())
   End Sub 'Main
End Class 'Sample
'
'This example produces the following results:
'
'OSVersion: Microsoft Windows NT 5.1.2600.0
'

C#
// Sample for the Environment.OSVersion property
using System;

class Sample 
{
    public static void Main() 
    {
    Console.WriteLine();
    Console.WriteLine("OSVersion: {0}", Environment.OSVersion.ToString());
    }
}
/*
This example produces the following results:

OSVersion: Microsoft Windows NT 5.1.2600.0
*/

Visual C++
// Sample for the Environment::OSVersion property
using namespace System;
int main()
{
   Console::WriteLine();
   Console::WriteLine( "OSVersion: {0}", Environment::OSVersion );
}

/*
This example produces the following results:

OSVersion: Microsoft Windows NT 5.1.2600.0
*/

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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.

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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