如何获取Web应用程序根目录？

Question

我正在使用它来获取应用程序root并且想知道这是否是更新的更好的方法呢？

string root = HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Authority) + HttpContext.Current.Request.ApplicationPath.TrimEnd('/');

Answer 1

它可能似乎过分但这是我使用的帮助程序。我还没有遇到任何麻烦。

public class UrlHelper
{
    public static string ApplicationBaseUrl()
    {
        string port = HttpContext.Current.Request.ServerVariables["SERVER_PORT"];

        if (port == null || port == "80" || port == "443")
            port = "";
        else
            port = ":" + port;

        string protocol = HttpContext.Current.Request.ServerVariables["SERVER_PORT_SECURE"];

        if (protocol == null || protocol == "0")
            protocol = "http://";
        else
            protocol = "https://";

        return protocol + HttpContext.Current.Request.ServerVariables["SERVER_NAME"] + port +
               HttpContext.Current.Request.ApplicationPath;
    }
}