//C#判斷作業系統是否為Windows98
    public static bool IsWindows98
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32Windows) && (Environment.OSVersion.Version.Minor == 10) && (Environment.OSVersion.Version.Revision.ToString() != "2222A");
        }
    }
    //C#判斷作業系統是否為Windows98第二版
    public static bool IsWindows98Second
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32Windows) && (Environment.OSVersion.Version.Minor == 10) && (Environment.OSVersion.Version.Revision.ToString() == "2222A");
        }
    }
    //C#判斷作業系統是否為Windows2000
    public static bool IsWindows2000
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major == 5) && (Environment.OSVersion.Version.Minor == 0);
        }
    }
    //C#判斷作業系統是否為WindowsXP
    public static bool IsWindowsXP
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major == 5) && (Environment.OSVersion.Version.Minor == 1);
        }
    }
    //C#判斷作業系統是否為Windows2003
    public static bool IsWindows2003
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major == 5) && (Environment.OSVersion.Version.Minor == 2);
        }
    }
    //C#判斷作業系統是否為WindowsVista
    public static bool IsWindowsVista
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major == 6) && (Environment.OSVersion.Version.Minor == 0);
        }
    }
    //C#判斷作業系統是否為Windows7
    public static bool IsWindows7
    {
        get
        {
            return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major == 6) && (Environment.OSVersion.Version.Minor == 1);
        }
    }
    //C#判斷作業系統是否為Unix
    public static bool IsUnix
    {
        get
        {
            return Environment.OSVersion.Platform == PlatformID.Unix;
        }
    }
 

Request.Browser.MajorVersion.ToString();//獲取客戶端瀏覽器的（主）版本號
Request.Browser.Version.ToString();//獲取客戶端瀏覽器的完整版本號   

Request.Browser.Platform.ToString();//獲取客戶端使用平臺的名字   
Request.UserHostAddress.ToString();     //獲取遠端客戶端主機IP

  HttpRequest.Url                       獲取有關當前請求的   URL   的資訊。     
  HttpRequest.UrlReferrer       獲取有關客戶端上次請求的   URL   的資訊，該請求連結到當前的   URL。     
  HttpRequest.UserAgent           獲取客戶端瀏覽器的原始使用者代理資訊。     
  HttpRequest.UserHostAddress   獲取遠端客戶端的   IP   主機地址。     
  HttpRequest.UserHostName         獲取遠端客戶端的   DNS   名稱。     
  HttpRequest.UserLanguages       獲取客戶端語言首選項的排序字串陣列。

 System.Text.StringBuilder strLabel = new System.Text.StringBuilder();
  HttpBrowserCapabilities bc = Request.Browser;
  strLabel.Append("您的瀏覽器的解析度為：");
  strLabel.Append("瀏覽器基本資訊：");
  strLabel.Append("Type = " + bc.Type + "");
  strLabel.Append("Name = " + bc.Browser + "");
  strLabel.Append("Version = " + bc.Version + "");
  strLabel.Append("Major Version = " + bc.MajorVersion + "");
  strLabel.Append("Minor Version = " + bc.MinorVersion + "");
  strLabel.Append("Platform = " + bc.Platform + "");
  strLabel.Append("Is Beta = " + bc.Beta + "");
  strLabel.Append("Is Crawler = " + bc.Crawler + "");
  strLabel.Append("Is AOL = " + bc.AOL + "");
  strLabel.Append("Is Win16 = " + bc.Win16 + "");
  strLabel.Append("Is Win32 = " + bc.Win32 + "");
  strLabel.Append("支援 Frames = " + bc.Frames + "");
  strLabel.Append("支援 Tables = " + bc.Tables + "");
  strLabel.Append("支援 Cookies = " + bc.Cookies + "");
  strLabel.Append("支援 VB Script = " + bc.VBScript + "");
  strLabel.Append("支援 JavaScript = " + bc.JavaScript + "");
  strLabel.Append("支援 Java Applets = " + bc.JavaApplets + "");
  strLabel.Append("支援 ActiveX Controls = " + bc.ActiveXControls + "");
  strLabel.Append("CDF = " + bc.CDF + "");
  strLabel.Append("W3CDomVersion = " + bc.W3CDomVersion.ToString() + "");
  strLabel.Append("UserAgent = " + Request.UserAgent + "");
  strLabel.Append("UserLanguages = " + Request.UserLanguages[0].ToString() + "");
  strLabel.Append("");
  strLabel.Append("客戶端計算機基本配置：");
  strLabel.Append("UserHostName = " + Request.UserHostName + "");
  strLabel.Append("UserHostAddress = " + Request.UserHostAddress + "");
  strLabel.Append("PDF 6.0 外掛是否安裝 = " + Request.Form["PDF"] + "");
  Label1.Text = strLabel.ToString();