PlatformID Enum

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Identifies the operating system, or platform, supported by an assembly.

public enum class PlatformID

public enum PlatformID

type PlatformID = 

Public Enum PlatformID

Inheritance

Object

ValueType

Enum

PlatformID

Fields

Name	Value	Description
Win32S	0	The operating system is Win32s. This value is no longer in use.
Win32Windows	1	The operating system is Windows 95 or Windows 98. This value is no longer in use.
Win32NT	2	The operating system is Windows NT or later.
WinCE	3	The operating system is Windows CE. This value is no longer in use.
Unix	4	The operating system is Unix.
Xbox	5	The development platform is Xbox 360. This value is no longer in use.
MacOSX	6	The operating system is Macintosh. This value was returned by Silverlight. On .NET Core, its replacement is Unix.
Other	7	Any other operating system. This includes Browser (WASM).

Examples

The following example demonstrates using the PlatformID class to identify the currently executing operating system:

// This example demonstrates the PlatformID enumeration.
using namespace System;
int main()
{
   String^ msg1 = L"This is a Windows operating system.";
   String^ msg2 = L"This is a Unix operating system.";
   String^ msg3 = L"ERROR: This platform identifier is invalid.";
   
   // Assume this example is run on a Windows operating system.
   OperatingSystem^ os = Environment::OSVersion;
   PlatformID pid = os->Platform;
   switch ( pid )
   {
      case PlatformID::Win32NT:
      case PlatformID::Win32S:
      case PlatformID::Win32Windows:
      case PlatformID::WinCE:
         Console::WriteLine( msg1 );
         break;

      case PlatformID::Unix:
         Console::WriteLine( msg2 );
         break;

      default:
         Console::WriteLine( msg3 );
         break;
   }
   return 1;
}

/*
This example produces the following results:

This is a Windows operating system.
*/

// This example demonstrates the PlatformID enumeration.
using System;

class Sample
{
    public static void Main()
    {
    string msg1 = "This is a Windows operating system.";
    string msg2 = "This is a Unix operating system.";
    string msg3 = "ERROR: This platform identifier is invalid.";

// Assume this example is run on a Windows operating system.

    OperatingSystem os = Environment.OSVersion;
    PlatformID     pid = os.Platform;
    switch (pid)
        {
        case PlatformID.Win32NT:
        case PlatformID.Win32S:
        case PlatformID.Win32Windows:
        case PlatformID.WinCE:
            Console.WriteLine(msg1);
            break;
        case PlatformID.Unix:
            Console.WriteLine(msg2);
            break;
        default:
            Console.WriteLine(msg3);
            break;
        }
    }
}
/*
This example produces the following results:

This is a Windows operating system.
*/

// This example demonstrates the PlatformID enumeration.
open System

let msg1 = "This is a Windows operating system."
let msg2 = "This is a Unix operating system."
let msg3 = "ERROR: This platform identifier is invalid."

// Assume this example is run on a Windows operating system.
let os = Environment.OSVersion
let pid = os.Platform
match pid with
| PlatformID.Win32NT
| PlatformID.Win32S
| PlatformID.Win32Windows
| PlatformID.WinCE ->
    printfn $"{msg1}"
| PlatformID.Unix ->
    printfn $"{msg2}"
| _ ->
    printfn $"{msg3}"
// This example produces the following results:
//     This is a Windows operating system.

' This example demonstrates the PlatformID enumeration.
Class Sample
   Public Shared Sub Main()
      Dim msg1 As String = "This is a Windows operating system."
      Dim msg2 As String = "This is a Unix operating system."
      Dim msg3 As String = "ERROR: This platform identifier is invalid."
      
      ' Assume this example is run on a Windows operating system.
      Dim os As OperatingSystem = Environment.OSVersion
      Dim pid As PlatformID = os.Platform
      Select Case pid
         Case PlatformID.Win32NT, PlatformID.Win32S, _
              PlatformID.Win32Windows, PlatformID.WinCE
            Console.WriteLine(msg1)
         Case PlatformID.Unix
            Console.WriteLine(msg2)
         Case Else
            Console.WriteLine(msg3)
      End Select
   End Sub
End Class
'
'This example produces the following results:
'
'This is a Windows operating system.
'

Remarks

Use the Environment.OSVersion and OperatingSystem.Platform properties to obtain the PlatformID enumeration for the currently executing operating system or development platform. Use the PlatformID enumeration to help determine whether the current operating system or development platform supports your application.

You can use the underlying integer value of each PlatformID enumeration member as the PlatformId argument for the SignTool.exe (Sign Tool) utility.