Asp.net中获取应用程序完整Url路径的方法

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/// <summary>/// Gets the absolute root/// </summary>public static Uri AbsoluteWebRoot{    get    {        var context = HttpContext.Current;        UriBuilder uri = new UriBuilder();        uri.Host = context.Request.Url.Host;        if (!context.Request.Url.IsDefaultPort)        {            uri.Port = context.Request.Url.Port;        }        uri.Path = VirtualPathUtility.ToAbsolute("~/");        Uri absoluteWebRoot = uri.Uri;        return absoluteWebRoot;    }}