webform中 ajax调用后台方法(非webservice)
浏览数：87 /
时间：2015年06月09日
后台：
public partial class Ajax_ShoppingCart : System.Web.UI.Page { bookdbDataContext bdc = Connect.bookdb(); protected void Page_Load(object sender, EventArgs e) { if(!IsPostBack) { if(Request.Form["method"]!=null) { switch (Request.Form["method"].ToString()) { //添加商品至购物车 case "addToCart": Response.Write(addToCart()); break; //获得购物车 case "showCart": Response.Write(showCart()); break; //从购物车中删除商品 case "removeCart": Response.Write(removeCart()); break; //减少购物车中某一商品的数量 case "redCount": Response.Write(redCount()); break; //增加购物车中某一商品的数量 case "addCount": Response.Write(addCount()); break; default: break; } } } } protected string tid { get { if (Request.Form["tid"] != null) { return Request.Form["tid"].ToString(); } else { return ""; } } } /// <summary> /// 添加至购物车 /// </summary> /// <returns></returns> protected string addToCart() { int Count = 0; string message = string.Empty; if (Request.Form["count"] != null) { Int32.TryParse(Request.Form["count"].ToString(), out Count); } if (Count > 5 || Count < 1) { return JsonConvert.SerializeObject(new { status = 0, message = "书籍数量不对，不能超过5张哦" }); } var tic = bdc.Book.SingleOrDefault(obj => obj.ID == Convert.ToInt32(tid)); if (tic != null) { Common.Book t = new Common.Book(); t.ID = tid; t.Count = Count; t.Name = tic.Name; t.Price = tic.Price; int result = ShoppingCartHelper.addCart(t); switch (result) { case -2: return JsonConvert.SerializeObject(new { status = 0, message = "同一书籍不能购买超过5本哦！" }); case 1: return JsonConvert.SerializeObject(new { status = 1, cart = ShoppingCartHelper.getShoppingCart(), message = "成功加入购物车！" }); default: return null; } } else { return JsonConvert.SerializeObject(new { status = 0, message = "不存在此书籍，请您重新选择！" }); } } /// <summary> /// 获得购物车 /// </summary> /// <returns></returns> protected string showCart() { return JsonConvert.SerializeObject(new { cart = ShoppingCartHelper.getShoppingCart() }); } /// <summary> /// 从购物车中移除商品 /// </summary> /// <returns></returns> protected string removeCart() { int result = ShoppingCartHelper.removeCart(tid); switch (result) { case -1: return JsonConvert.SerializeObject(new { status = 0, message = "离开太久啦，购物车已经空空了，您重新购买吧" }); default: return JsonConvert.SerializeObject(new { status = 1, cart = ShoppingCartHelper.getShoppingCart() }); } } /// <summary> /// 减少购物车中某一件商品的数量 /// </summary> /// <returns></returns> protected string redCount() { int result = ShoppingCartHelper.reduceCart(tid); switch (result) { case -1: return JsonConvert.SerializeObject(new { status = 0, message = "离开太久啦，购物车已经空空了，您重新购买吧" }); default: return JsonConvert.SerializeObject(new { status = 1, cart = ShoppingCartHelper.getShoppingCart() }); } } /// <summary> /// 增加购物车中某一件商品的数量 /// </summary> /// <returns></returns> protected string addCount() { int result = ShoppingCartHelper.addCart(tid); switch (result) { case -1: return JsonConvert.SerializeObject(new { status = 0, message = "离开太久啦，购物车已经空空了，您重新购买吧" }); default: return JsonConvert.SerializeObject(new { status = 1, cart = ShoppingCartHelper.getShoppingCart() }); } } }
前台:
function ShowNewList(d,t) { var _url = "/Data_ajax/Ajax_ShoppingCart.aspx";//Data_ajax只是一个文件夹名字，随便怎么取，但是，该页面的aspx界面中，不能出现空格和内容，就是一个空的界面什么对没有 var obj = { method: "addToCart", Id: d //在后台可以用Reques.Form["Id"]获取参数值 }; jQuery.ajax({ type: "POST", url: _url, data: obj, dataType: "json", success: function (x) { ShowNewList1(x); } }); }
购物车类:
namespace Ipow.CMS.Helper { public static class ShoppingCartHelper { /// <summary> /// 获取购物车 /// </summary> /// <returns></returns> public static shoppingCart getShoppingCart() { shoppingCart cart = new shoppingCart(); if (HttpContext.Current.Session["cart"] != null) { cart = HttpContext.Current.Session["cart"] as shoppingCart; } return cart; } /// <summary> /// 加入购物车 /// </summary> /// <param name="tic">门票</param> /// <param name="CategoryID">门票类别</param> /// <returns></returns> public static int addCart(ticket tic, int CategoryID) { int result = 1; shoppingCart cart = getShoppingCart(); if (cart.CategoryID == 0) { cart.CategoryID = CategoryID; cart.TotalPrice = tic.ticketPrice * tic.ticketCount; List<ticket> list = new List<ticket>(); list.Add(tic); cart.tickets = list; } else { if (cart.CategoryID != CategoryID && cart.tickets.Count() != 0) { //不同园区门票不能加入同一个购物车 result = -1; } else { ticket t1 = cart.tickets.SingleOrDefault(obj => obj.ticketID == tic.ticketID); //如果已存在同样的门票，则增加门票数量 if (t1 != null) { if (t1.ticketCount + tic.ticketCount <= 5) { t1.ticketCount += tic.ticketCount; cart.TotalPrice += tic.ticketPrice * tic.ticketCount; cart.CategoryID = CategoryID; } else { //门票数量超过5张 result = -2; } } //不存在则添加 else { cart.TotalPrice += tic.ticketPrice * tic.ticketCount; cart.CategoryID = CategoryID; cart.tickets.Add(tic); } } } HttpContext.Current.Session["cart"] = cart; return result; } /// <summary> /// 从购物车中移除商品 /// </summary> /// <param name="tic">要移除的商品ID</param> /// <returns></returns> public static int removeCart(string tid) { shoppingCart cart = getShoppingCart(); if (cart.CategoryID == 0) { //离开太久啦，购物车已经空空了，您重新购买吧 return -1; } else { ticket t1 = cart.tickets.SingleOrDefault(obj => obj.ticketID == tid); if (t1 != null) { //重新计算总价 cart.TotalPrice -= t1.ticketPrice * t1.ticketCount; //从购物车中移除 cart.tickets.Remove(t1); } } HttpContext.Current.Session["cart"] = cart; return 1; } /// <summary> /// 减少购物车中某一商品的数量 /// </summary> /// <param name="tic">要减少数量的商品id</param> /// <returns></returns> public static int reduceCart(string tid) { shoppingCart cart = getShoppingCart(); if (cart.CategoryID == 0) { //离开太久啦，购物车已经空空了，您重新购买吧 return -1; } else { ticket t1 = cart.tickets.SingleOrDefault(obj => obj.ticketID == tid); if (t1 != null) { if (t1.ticketCount > 1) { //从购物车中减少某一商品的数量 t1.ticketCount--; //重新计算总价 cart.TotalPrice -= t1.ticketPrice; } } } HttpContext.Current.Session["cart"] = cart; return 1; } /// <summary> /// 增加购物车中某一商品的数量 /// </summary> /// <param name="tic">要减少数量的商品id</param> /// <returns></returns> public static int addCart(string tid) { shoppingCart cart = getShoppingCart(); if (cart.CategoryID == 0) { //离开太久啦，购物车已经空空了，您重新购买吧 return -1; } else { ticket t1 = cart.tickets.SingleOrDefault(obj => obj.ticketID == tid); if (t1 != null) { if (t1.ticketCount < 5) { //从购物车中减少某一商品的数量 t1.ticketCount++; //重新计算总价 cart.TotalPrice += t1.ticketPrice; } } } HttpContext.Current.Session["cart"] = cart; return 1; } } /// <summary> /// 购物车 /// </summary> public class shoppingCart { /// <summary> /// 门票类别ID /// </summary> public int CategoryID { get; set; } /// <summary> /// 总价 /// </summary> public decimal? TotalPrice { get; set; } /// <summary> /// 门票列表 /// </summary> public List<ticket> tickets { get; set; } } /// <summary> /// 门票 /// </summary> public class ticket { public string ticketID { get; set; } /// <summary> /// 门票名称 /// </summary> public string ticketName { get; set; } /// <summary> /// 门票数量 /// </summary> public int ticketCount { get; set; } /// <summary> /// 门票价格 /// </summary> public decimal? ticketPrice { get; set; } } }
郑重声明：本站内容如果来自互联网及其他传播媒体，其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享，并不代表本站赞同其观点和对其真实性负责，也不构成任何其他建议。
