private void DelData(HttpContext context, string btn)
        {
            if (btn != "btnDel")
            {
                context.Response.Write("{\"status\":\"0.2\",\"msg\":\"对不起,您没有操作权限!\"}");
                return;
            }



            BLL.System.sys_Attachment bll = new BLL.System.sys_Attachment();

            Model.System.sys_LoginUser loginUserModel = BaseWeb.GetLoginInfo();
            //string status = "0";
            string operaAction = "";
            string operaMemo   = "";

            try
            {
                UpLoad    upFiles = new UpLoad();
                DataTable dt      = bll.GetList("Source=1 and UseId=0").Tables[0];
                if (dt.Rows.Count > 0)
                {
                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        upFiles.fileDel(dt.Rows[i]["FilePath"].ToString());
                    }
                }
                bll.Delete("Source=1 and UseId=0");

                //status = "1";
                operaAction = Enums.ActionEnum.Delete.ToString();
                operaMemo   = "清理上传文件";

                //写入操作日志
                BaseWeb.AddOpera(loginUserModel, int.Parse(RequestHelper.GetQueryString("MenuId")), operaAction, operaMemo);

                context.Response.Write("{\"status\":\"1\",\"msg\":\"清理成功!\"}");
                return;
            }
            catch (Exception e)
            {
                context.Response.Write("{\"status\":\"0\",\"msg\":\"对不起,系统出错:" + Utils.HtmlEncode(e.Message) + "\"}");
                return;
            }
        }
        private void GetList(HttpContext context, string btn)
        {
            if (btn != "show")
            {
                context.Response.Write("{\"status\":\"0.2\",\"msg\":\"对不起,您没有操作权限!\"}");
                return;
            }
            string fileName  = RequestHelper.GetString("fileName");
            string fileUse   = RequestHelper.GetString("fileUse");
            string operaName = RequestHelper.GetString("operaName");
            string beginDate = RequestHelper.GetString("beginDate");
            string endDate   = RequestHelper.GetString("endDate");

            StringBuilder strWhere = new StringBuilder();

            strWhere.Append("Source=1 and ");
            List <SqlParameter> parameterList = new List <SqlParameter>();
            SqlParameter        tempParameter = new SqlParameter();

            if (fileName != "")
            {
                strWhere.Append("FileName like '%' + @FileName + '%' and ");
                tempParameter       = new SqlParameter("@FileName", SqlDbType.NVarChar);
                tempParameter.Value = fileName;
                parameterList.Add(tempParameter);
            }
            if (fileUse != "")
            {
                strWhere.Append("FilePath like '%' + @FilePath + '%' and ");
                tempParameter       = new SqlParameter("@FilePath", SqlDbType.NVarChar);
                tempParameter.Value = fileUse;
                parameterList.Add(tempParameter);
            }

            if (operaName != "")
            {
                strWhere.Append("OperaName like '%' + @OperaName + '%' and ");
                tempParameter       = new SqlParameter("@OperaName", SqlDbType.NVarChar);
                tempParameter.Value = operaName;
                parameterList.Add(tempParameter);
            }
            if (beginDate != "")
            {
                strWhere.Append("OperaTime >= @BeginOperTime and ");
                tempParameter       = new SqlParameter("@BeginOperTime", SqlDbType.DateTime);
                tempParameter.Value = DateTime.Parse(beginDate);
                parameterList.Add(tempParameter);
            }
            if (endDate != "")
            {
                strWhere.Append("OperaTime <= @EndOperTime and ");
                tempParameter       = new SqlParameter("@EndOperTime", SqlDbType.DateTime);
                tempParameter.Value = DateTime.Parse(endDate + " 23:59:59");
                parameterList.Add(tempParameter);
            }

            BLL.System.sys_Attachment bll = new BLL.System.sys_Attachment();
            try
            {
                DataTable     dt      = bll.GetList(Utils.DelLastChar(strWhere.ToString(), " and "), parameterList).Tables[0];
                string        rowsStr = Utils.ToJson(dt);
                StringBuilder jsonStr = new StringBuilder();
                jsonStr.Append("{\"status\":\"1\",\"msg\":\"数据获取成功!\",\"info\":");
                jsonStr.Append("{\"total\":" + dt.Rows.Count + ",\"rows\":");
                jsonStr.Append(rowsStr);
                jsonStr.Append("}}");
                context.Response.Write(jsonStr);
            }
            catch (Exception e)
            {
                context.Response.Write("{\"status\":\"0\",\"msg\":\"对不起,系统出错:" + Utils.HtmlEncode(e.Message) + "\"}");
                return;
            }
        }