我上传的文件怎么存不了数据库?(已解决)

我上传的文件,可以上传到服务器,可怎么存不了数据库呢?
老是说file附近有错.帮我看看哦.   
 protected void okBtn_Click(object sender, EventArgs e)
    {
        string file_path = FileUpload1.PostedFile.FileName.ToLower();
        string filename= ""; // 上传文件的文件名(原名)
        int size = FileUpload1.PostedFile.ContentLength;//上传文件的大小
        // 从web.config文件中读取文件上传的路径;
        string root = System.Configuration.ConfigurationSettings.AppSettings["upload"];
        if (file_path.Equals(""))
        {
            Response.Write("<script>alert('请选择文件！')</script>");
            return;
        }

        if (size == 0)
        {
            Response.Write("<script>alert('找不到文件！')</script>");
            return;
        }
        // 对文件名进行处理，使该文件名是唯一的，这里的做法是加入文件上传的时间;
        int position = file_path.LastIndexOf("\\");
        string uptime = DateTime.Now.ToString("yyyy-MM-dd-hh-mm-ss");
        filename = file_path.Substring(position + 1);   
        string uploadfile = uptime + filename;
        // 判断upload目录是否存在，如果不存在就创建该目录;
        if (!Directory.Exists(root))
        {
            Directory.CreateDirectory(root);
        }
        
        // 指明上传的路径
        string destination = root + uptime + filename;
        // 在服务器保存文件;
            FileUpload1.PostedFile.SaveAs(destination);
            SqlConnection meteor = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["meteor"]);
            meteor.Open();
            SqlCommand cmd = new SqlCommand("insert into file(uploadfile,filename) values ('" + uploadfile + "','" + filename + "')", meteor);
            cmd.ExecuteNonQuery();
            meteor.Close();
             Response.Write("<script>alert('上传成功！')</script>");  
    }

[[it] 本帖最后由 meteor86 于 2008-4-23 23:46 编辑 [/it]]