生成json格式数据

         <summary>
         生成json数据
         </summary>
         <param name="query"></param>
         <returns></returns>
        private string BuildJsonForOrganization(IQueryable<Organization> query)
        {
            StringBuilder Json = new StringBuilder();
            if (query.Count() > 0)
            {
                Json.Append("[");
                int index = 0;
                foreach (Organization org in query)
                {
                    Json.Append("{");
                    Json.Append("id:" + org.Id + ",");
                    Json.Append("pid:" + org.ParentId + ",");
                    Json.Append("name:\"" + org.OrgName + "\",");
                    Json.Append("smalltype:\"" + org.OrgSmallType + "\",");
                    Json.Append("code:\"" + org.Code + "\"");
                    if (org.ParentId == 0)
                    {
                        Json.Append(",expanded:true");
                    }
                    if (index < query.Count() - 1)
                    {
                        Json.Append("},");
                    }
                    else
                    {
                        Json.Append("}");
                    }
                    index++;
                }
                return Json.ToString() + "]";
            }
            return Json.ToString();
        }