如何使用ASP.NET和C#从服务器端确定浏览器类型？

Question

我想在ASP.NET页面上使用C#确定代码隐藏文件中的浏览器类型.

如果是IE 6.0,我必须执行某些代码行.

如何确定浏览器类型？

Answer 1

您可以使用Request.Browser来识别浏览器信息.这些MSDN 1和2文章提供了更多信息.

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.EcmaScriptVersion.ToString() + "\n"
    + "Supports Java Applets = "   + browser.JavaApplets + "\n"
    + "Supports ActiveX Controls = " + browser.ActiveXControls 
          + "\n";

Answer 2

您可能还想查看:Request.ServerVariables.

我用过:

string UserAgent = Request.ServerVariables["HTTP_USER_AGENT"];
Response.Write("User: " + UserAgent);
if(UserAgent.Contains("MSIE")) {
   //do something
} 

向我展示正在使用的浏览器.这可以给你一个类似于IE的响应:

User: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.21022; Tablet PC 2.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.1.4322)

取决于您的IE或其他浏览器的版本.Firefox给了我:

User: Mozilla/5.0 (Windows NT 6.0; rv:11.0) Gecko/20100101 Firefox/11.0

重要的是要注意: 我会使用ServerVariables而不是浏览器功能,因为在Chrome上使用BrowserCapabilities目前会返回"桌面",当我在Mac上查看它时,它似乎与Safari相同.