/// <summary>
/// 向购物车中添加商品信息。
/// </summary>
protected void AddCart()
{
if (!string.IsNullOrEmpty(Request.QueryString["id"]))
{
int bookId = 0;
if (!int.TryParse(Request.QueryString["id"], out bookId))
{
Response.Redirect("/showinfo.aspx?msg=" + Server.UrlEncode("参数错误") + "&url=BookList.aspx" + "&txt=" + Server.UrlEncode("返回图书列表"));
}
else
{
BLL.BookManager bll = new BookShop.BLL.BookManager();
Model.Book model = bll.GetModel(bookId);//根据传递过来的书的编号查找该书.
if (model != null)
{
BLL.CartManager cartBll = new BookShop.BLL.CartManager();
int userId = ((Model.User)Session["user"]).Id; //得到了当前登录用户的编号.
Model.Cart cartModel = cartBll.GetModel(model.Id, userId); //根据用户的编号，与书的编号，找出购物车中的商品项.
if (cartModel == null) //如果该条件成立，向购物车表中插入一条记录
{
Model.Cart ModelCart = new BookShop.Model.Cart();
ModelCart.User = (Model.User)Session["user"];
ModelCart.Book = model;
ModelCart.Count = 1;
cartBll.Add(ModelCart);
}
else//更新该商品项的数量
{
cartModel.Count = cartModel.Count + 1;
cartBll.Update(cartModel);
}
}
else
{
Response.Redirect("/showinfo.aspx?msg=" + Server.UrlEncode("该书不存在") + "&url=BookList.aspx" + "&txt=" + Server.UrlEncode("返回图书列表"));
}
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(Request.QueryString["id"]))
{
int id = 0;
if (!int.TryParse(Request.QueryString["id"], out id))
{
Response.Redirect("BookList2.aspx");
}
else
{
BLL.BookManager bll = new BookShop.BLL.BookManager();
Model.Book model = bll.GetModel(id);//根据书的编号，查找该书.
if (model != null)
{
StringBuilder builder = new StringBuilder();
builder.Append("<table border='1' >");
builder.Append("<tr><th width='30px'>书名:</th><td>" + model.Title + "</td></tr>");
builder.Append("<tr><th>封面:</th><td><img src=/Images/BookCovers/" + model.ISBN + ".jpg/></td></tr>");
builder.Append("<tr><th>作者:</th><td>" + model.Author + "</td></tr>");
builder.Append("<tr><th>出版日期::</th><td>" + model.PublishDate.ToShortDateString() + "</td></tr>");
builder.Append("<tr><th>单价:</th><td>¥" + model.UnitPrice.ToString("0.00") + "<a href='cart.aspx?id=" + model.Id + "'><img src='/Images/sale.gif' border='0'/></a></td></tr>");
builder.Append("<tr><th>简介:</th><td>" + model.ContentDescription + "</td></tr>");
builder.Append("<tr><th>目录::</th><td>" + model.TOC + "</td></tr>");
builder.Append("</table>");
strHtml = builder.ToString();
}
else
{
Response.Redirect("/showinfo.aspx?msg=" + Server.UrlEncode("图书部存在") + "&url=/BookList2.aspx" + "&txt=" + Server.UrlEncode("图书列表页面"));
}
}
}
else
{
Response.Redirect("BookList2.aspx");
}
}
public void ProcessRequest(HttpContext context)
{
if (!string.IsNullOrEmpty(context.Request.Form["action"]))
{
string action = context.Request.Form["action"];
if (action == "change")//更新商品数量
{
int pk, bookId, count;
if (!int.TryParse(context.Request.Form["pk"], out pk))
{
context.Response.Write("no-参数错误!");
return;
}
if (!int.TryParse(context.Request.Form["count"], out count))
{
context.Response.Write("no-参数错误!");
return;
}
if (!int.TryParse(context.Request.Form["bookId"], out bookId))
{
context.Response.Write("no-参数错误!");
return;
}
BLL.BookManager bookBll = new BookShop.BLL.BookManager();
Model.Book modelBook = bookBll.GetModel(bookId);
if (modelBook != null)//看一下该书是否存在
{
BLL.CartManager cartBll = new BookShop.BLL.CartManager();
Model.Cart cartModel = cartBll.GetModel(pk);
if (cartModel != null)//根据主键查找该购物车中商品项
{
cartModel.Count = count;
cartBll.Update(cartModel);//完成数量的更新
context.Response.Write("yes");
}
else
{
context.Response.Write("no");
return;
}
}
else
{
context.Response.Write("no");
}
}
//删除一条记录
else if (action == "delete")
{
if (!string.IsNullOrEmpty(context.Request.Form["pk"]))
{
int pkId = 0;
if (!int.TryParse(context.Request.Form["pk"], out pkId))
{
context.Response.Write("no");
return;
}
BLL.CartManager bllCart = new BookShop.BLL.CartManager();
bllCart.Delete(pkId);
context.Response.Write("yes");
}
}
}
}