public int   huifu()
    {
        string str;
        str = "insert into youke (huifuneirong) values (@huifuneirong)";
        OleDbConnection cn = new OleDbConnection(System.Configuration.ConfigurationManager.AppSettings["SQLConnString"].ToString());
        cn.Open();
        OleDbCommand cmd = new OleDbCommand(str, cn);
        int ret = cmd.ExecuteNonQuery();
        cn.Open();
        return ret;
    }