Ajax实现前台传值到后台

实现功能：通过Json格式将值由前台传入后台

1.前台JS代码

<script type="text/javascript" src="../Common/Javascript/jquery-1.4.2.js"></script>
<script type="text/javascript" language="javascript">
//实现编辑功能
 function editCarsInfo(Eid) {
               var Up_CompanyName = $("#txtCompanyName"),
                   Up_CarLicence = $("#txtCarLicence"),
                   Up_LinkMan = $("#txtLinkMan"),
                   Up_Phone = $("#txtPhone"),
                   Up_Transport_type = $("#drpTransport_type"),
                   Up_isDelCar = $("#isDelCar");
              var parm = "addCarsInfo";
                    
                 jQuery.ajax({
                     type: "get",
                     url: "AddTransCarManager.aspx?method=" + parm,//页面地址和传递的URL参数                     
                     contentType: "application/json; charset=UTF-8",
                     dataType: "jsonp",

                     data: { id: Eid,
                             CompanyName: escape(Up_CompanyName.val()),//要向后台传的值-escape对传值进行编码
                             CarLicence: escape(Up_CarLicence.val()),
                             LinkMan: escape(Up_LinkMan.val()),
                             Phone: escape(Up_Phone.val()),
                             Transport_type: escape(Up_Transport_type.val()),
                             isDelCar: escape(Up_isDelCar.val())
                            },
                           success: msg()
                       });
                       function msg() {
                           alert('修改汽车运输信息成功');
                           $("#txtCompanyName").val('');
                           $("#txtCarLicence").val('');
                           $("#txtLinkMan").val('');
                           $("#txtPhone").val('');
                           window.location.reload();
                       }
                   };
    //删除功能
    function delBackFillInfo(Delid) {
                           var parm = "delCarsInfo";
                           $.messager.confirm('系统提示', '您确定要删除该信息吗?', function(r) {
                               if (r) {
                                   jQuery.ajax({
                                       type: "get",
                                       url: "AddTransCarManager.aspx?method=" + parm,
                                       r: Math.random(),
                                       contentType: "application/json; charset=UTF-8",
                                       dataType: "jsonp",
                                       data: {
                                           id: Delid
                                       },
                                       success: msg()
                                   });
                                   function msg() {
                                       $("#txtCompanyName").val('');
                                       $("#txtCarLicence").val('');
                                       $("#txtLinkMan").val('');
                                       $("#txtPhone").val('');
                                       window.location.reload();
                                   }
                               }
                           });
                       }
</script>

2.C#后台代码

 protected void Page_Load(object sender, EventArgs e)
        {
            this.Pager1.CurrentDataGrid = this.DataGrid1;
            this.Pager1.DataSourceMethod = new GetDataSourceMethod(GetDataSet);
            this.Pager1.IsAllItem = true;

            string method = Request.QueryString["method"];
            if (method == null)
            {
                return;
            }
            switch (method)
            { 
                case "addCarsInfo"://编辑

                    if (!string.IsNullOrEmpty(Request.QueryString["CompanyName"].ToString()))
                    {
                         string CompanyName = Server.UrlDecode(Request.QueryString["CompanyName"].ToString().Trim());
                         string CID= TransCar.GetComID(CompanyName);
                         if (!string.IsNullOrEmpty(CID))
                         {
                             car.CompanyId = CID;
                         }
                    }

                    #region "车辆信息"
                   if (Request.QueryString["id"]!=null)
                   {
                    //if (!string.IsNullOrEmpty(Request.QueryString["id"].ToString()) && Convert.ToInt32(Request.QueryString["id"].ToString())!=0)
                    //{
                        car.Zt_car_Id = Convert.ToInt32(Request.QueryString["id"].ToString());
                    }
                    else
                    {
                        car.Zt_car_Id = 0;
                    }
                    if (!string.IsNullOrEmpty(Request["CarLicence"].ToString()))
                    {
                        car.CarLicence = Server.UrlDecode(Request["CarLicence"].ToString().Trim());
                    }
                    else
                    {
                        car.CarLicence = "";
                    }
                    if (!string.IsNullOrEmpty(Request["LinkMan"].ToString()))
                    {
                        car.LinkMan = Server.UrlDecode(Request["LinkMan"].ToString().Trim());
                    }
                    else
                    {
                        car.LinkMan = "";
                    }
                    if (!string.IsNullOrEmpty(Request["Phone"].ToString()))
                    {
                        car.Phone = Server.UrlDecode(Request["Phone"].ToString().Trim());
                    }
                    else
                    {
                        car.Phone = "";
                    }
                    if (!string.IsNullOrEmpty(Request["Transport_type"].ToString()))
                    {
                        car.Transport_type = Server.UrlDecode(Request["Transport_type"].ToString().Trim());
                    }
                    else
                    {
                        car.Transport_type = "";
                    }
                    if (!string.IsNullOrEmpty(Request["isDelCar"].ToString()))
                    {
                        car.IsDel = Convert.ToInt32(Request["isDelCar"].ToString());
                    }
                    car.Cid = "";
                    #endregion

                    count_car = bf.AddCarInfo(car);

                    if (count_car > 0)
                    {
                        Page.RegisterStartupScript("message", "<script>alert('保存成功!');</script>");
                    }
                    break;

                case "delCarsInfo"://删除
                    if (Request.QueryString["id"] != null)
                    {
                        car.Zt_car_Id = Convert.ToInt32(Request.QueryString["id"].ToString());
                        count_car = bf.DelCarsInfo(car.Zt_car_Id);
                    }
                    break;
                default:
                    return;
            }
        }