使用一个按钮就可查找出文件，是不是很方便，这样就快速帮我们找到它的具体位置

protected void Button1_Click(object sender, EventArgs e)    {        string path = "";        string physicsPath = Server.MapPath(Request.ApplicationPath); //将当前虚拟根路径转为实际物理路径        string toFindDirectoryName = "ss"; //要查找的文件夹名        FindDirectory(physicsPath + "\\", toFindDirectoryName, out path);//用递归的方式去查找文件夹        if (!string.IsNullOrEmpty(path)) //如果存在，返回该文件夹所在的物理路径        {            //将该物理路径转为虚拟路径            Response.Write(GetVirtualPath(path, Request.ApplicationPath));        }        else        {            //没有找到路径,创建新文件夹            Directory.CreateDirectory(physicsPath + "\\" + toFindDirectoryName);        }    }    /// 
    /// 将物理路径转为虚拟路径    /// 
    /// 物理路径    /// 虚拟根路径    /// 
        private string GetVirtualPath(string physicsPath, string virtualRootPath)    {        int index = physicsPath.IndexOf(virtualRootPath.Substring(1));        return "/" + physicsPath.Substring(index).Replace("\\", "/");    }    /// 
    /// 在指定目录下递归查找子文件夹    /// 
    /// 根文件夹路径    /// 要查找的文件夹名    private void FindDirectory(string bootPath, string directoryName, out string filePath)    {        //在指定目录下递归查找子文件夹        DirectoryInfo dir = new DirectoryInfo(bootPath);        filePath = "";        try        {            foreach (DirectoryInfo d in dir.GetDirectories()) //查找子文件夹            {                if (d.Name == directoryName) //找到,返回文件夹路径                {                    filePath = d.FullName;                    break;                }                FindDirectory(bootPath + d.Name + "\\", directoryName, out filePath); //否则继续查找            }        }        catch (Exception e)        {            Response.Write(e.Message);        }    }