C# 获取客户端信息 /asp.net/WebService/WebForm
Request.Browser.MajorVersion.ToString();//获取客户端浏览器的（主）版本号
Request.Browser.Version.ToString(); //获取客户端浏览器的完整版本号
Request.Browser.Platform.ToString(); //获取客户端使用平台的名字
Request.UserHostAddress.ToString(); //获取远程客户端主机IP
HttpRequest.Url.ToString(); //获取有关当前请求的URL的信息。
HttpRequest.UrlReferrer.ToString(); //获取有关客户端上次请求的URL的信息，该请求链接到当前的 URL。
HttpRequest.UserAgent.ToString(); //获取客户端浏览器的原始用户代理信息。
HttpRequest.UserHostAddress.ToString(); //获取远程客户端的IP主机地址。
HttpRequest.UserHostName.ToString(); //获取远程客户端的DNS名称。
HttpRequest.UserLanguages.ToString(); //获取客户端语言首选项的排序字符串数组。
System.Web.HttpBrowserCapabilities browser = Request.Browser;
string s = "Browser Capabilities\n"
+ "Type = " + browser.Type + "\n"
+ "Name = " + browser.Browser + "\n"
+ "Version = " + browser.Version + "\n"
+ "Major Version = " + browser.MajorVersion + "\n"
+ "Minor Version = " + browser.MinorVersion + "\n"
+ "Platform = " + browser.Platform + "\n"
+ "Is Beta = " + browser.Beta + "\n"
+ "Is Crawler = " + browser.Crawler + "\n"
+ "Is AOL = " + browser.AOL + "\n"
+ "Is Win16 = " + browser.Win16 + "\n"
+ "Is Win32 = " + browser.Win32 + "\n"
+ "Supports Frames = " + browser.Frames + "\n"
+ "Supports Tables = " + browser.Tables + "\n"
+ "Supports Cookies = " + browser.Cookies + "\n"
+ "Supports VBScript = " + browser.VBScript + "\n"
+ "Supports JavaScript = " + browser.JavaScript + "\n"
+ "Supports Java Applets = " + browser.JavaApplets + "\n"
+ "Supports ActiveX Controls = " + browser.ActiveXControls + "\n";
TextBox1.Text = s;
//////////////////////////////////////////////////////////////////////////////////////
在.NET中，WebService和WebForm页面
Web Service使用(通过HttpContext对象调用Request对象)：
HttpContext.Current.Request.UserHostAddress
HttpContext.Current.Request.ServerVariables.GetValues("REMOTE_ADDR")[0]
Web Form使用（可直接使用Request对象）：
Request.ServerVariables.GetValues("REMOTE_ADDR")[0]
HttpContext.Current.Request.UserHostAddress
