WEBSERVICE测试窗体如何使用自定义类型作为参数的方法。

Question

[WebMethod]
    public bool InsertBulletin(Bullein pObj)
    {
        using (SqlConnection sCnn = new SqlConnection(ConnStr))
        {
            try
            {
                sCnn.Open();
                SqlInsert sSqlInsert = new SqlInsert("bulletin", "bulletin_title,bulletin_class,bulletin_flag,send_flag,bulletin_content,imgUrl,update_time,bulletin_visited_times,publish_time,is_active", 1);
                sSqlInsert.Add(0, "bulletin_title", DbType.String, pObj.bulletin_title);
                sSqlInsert.Add(0, "bulletin_class", DbType.String, pObj.bulletin_class);
                sSqlInsert.Add(0, "bulletin_flag", DbType.String, pObj.bulletin_flag);
                sSqlInsert.Add(0, "send_flag", DbType.String, pObj.send_flag);
                sSqlInsert.Add(0, "bulletin_content", DbType.String, pObj.bulletin_content);
                sSqlInsert.Add(0, "imgUrl", DbType.String, pObj.imgUrl);
                sSqlInsert.Add(0, "bulletin_visited_times", DbType.Int32, pObj.bulletin_visited_times);
                sSqlInsert.Add(0, "publish_time", DbType.DateTime, pObj.publish_time);
                sSqlInsert.Add(0, "is_active", DbType.String, pObj.is_active);
               
                sSqlInsert.ExeSql(sCnn);
                return true;
              
            }
            catch (Exception E)
            {
                LogServer.SynLog(E.ToString(), "插入公告");
                return false;
            }
        }
    }WEBSERICE中我定义了如上方法,如何调用测试窗体?