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HttpCapabilitiesBase.Platform Property

Gets the name of the platform that the client uses, if it is known.

Namespace:  System.Web.Configuration
Assembly:  System.Web (in System.Web.dll)

public string Platform { get; }

Property Value

Type: System.String
The operating system that the client uses, if it is known, otherwise the value is set to Unknown.

Some of the possible values for the Platform property are as follows:

  • Unknown

  • Win95

  • Win98

  • Windows NT 5.0 (Windows 2000)

  • Windows NT 5.1 (Windows XP)

  • WinNT (all other versions of Windows NT)

  • Win16

  • WinCE

  • Mac68K

  • MacPPC

  • UNIX

  • WebTV

The following code example shows how to determine whether the browser is running on the Windows NT platform.

<%@ page language="C#"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<script runat="server">
    void Page_Load(Object Sender, EventArgs e)

    void CheckBrowserCaps()
        String labelText = "";
        System.Web.HttpBrowserCapabilities myBrowserCaps = Request.Browser;
        if (((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).Platform.Equals("WinNT"))
            labelText = "Platform is Windows NT.";
            labelText = "Platform is not Windows NT.";

        Label1.Text = labelText;

<html xmlns="" >
    <title>Browser Capabilities Sample</title>
    <form runat="server" id="form1">
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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