获取站点路径方法

/**//// <summary>
        /// 保存程序失败及错误信息到日志
        /// </summary>
        /// <param name="opLog">错误信息</param>
        public void SaveErrorLog(string message)
        {
            string filePath = System.Web.HttpContext.Current.Server.MapPath("~//LogFile//Test.txt");
            System.IO.StreamWriter srWriteLine = System.IO.File.CreateText(filePath); 
            srWriteLine.WriteLine(message); 
            srWriteLine.Close(); 
        }

当前站点是：http://localhost/App/Web

        /**//// <summary>
        /// 保存程序失败及错误信息到日志
        /// </summary>
        /// <param name="opLog">错误信息</param>
        public void SaveErrorLog(string message)
        {
            string fileName = System.DateTime.Today.Year.ToString() + "-" + System.DateTime.Today.Month.ToString() + "-" + System.DateTime.Today.Day.ToString() + ".txt";
            string filePath = System.Web.HttpContext.Current.Server.MapPath("~//LogFile//"+fileName);
            if (!System.IO.File.Exists(filePath))
            {
                System.IO.StreamWriter srWriteLine = System.IO.File.CreateText(filePath); 
                srWriteLine.WriteLine(message); 
                srWriteLine.Close(); 
            }            
            else
            {
                FileStream fsMyfile = new FileStream(filePath,FileMode.Append, FileAccess.Write);
                StreamWriter swMyfile = new StreamWriter(fsMyfile); 
                swMyfile.WriteLine(message); 
                swMyfile.Flush(); 
                swMyfile.Close(); 
                fsMyfile.Close(); 
            }
        }