basket.aspx.cs

来自「一个网上购物系统」· CS 代码 · 共 94 行

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Basket : System.Web.UI.Page
{
    ShoppingCart cart;
    void Page_Load(object sender, EventArgs e)
    {

        if (!Page.IsPostBack)
        {
            cart = ShoppingCartManager.GetCart();
            BindCart();
        }
        else
        {
            UpdateQuantities();
        }

    }
    void BindCart()
    {
        if(cart.ItemCount>0){
            dgBasket.DataSource = cart.Items;
            dgBasket.DataBind();

        }else{
            pnlCheckout.Visible=false;

        }
    }
    protected void UpdateQuantities()
    {
        TextBox t = null;
        string sProductID="";
        int newQuantity = 0;
        int productID=0;
        //start with the second row, which is not the header
      
        for (int i = 0; i < dgBasket.Rows.Count; i++)
        {
            //get the quantities from the grid
            sProductID = dgBasket.Rows[i].Cells[0].Text;
            productID = int.Parse(sProductID);
            t = (TextBox)dgBasket.Rows[i].Cells[4].FindControl("txtQuantity");
            newQuantity = int.Parse(t.Text);

            if (newQuantity == 0)
            {
                //remove the item
                ShoppingCartManager.RemoveItem(productID);
            }
            else
            {
                //update the profile
                ShoppingCartManager.AdjustQuantity(productID, newQuantity);

            }
        }
        //redirect to current page to refresh the basket
        //and disable refresh problem
        Response.Redirect("Basket.aspx");
    }
    protected void Remove_Item(object sender, GridViewDeleteEventArgs e)
    {
        //the productID is the first column, get the value and delete the item
        //from the basket
        string sProductID = dgBasket.Rows[e.RowIndex].Cells[0].Text;
        int productID = int.Parse(sProductID);
        ShoppingCartManager.RemoveItem(productID);

        //redirect to current page to refresh the basket
        //and disable refresh problem
        Response.Redirect("basket.aspx");
    }


    protected void DoCommand(object sender, GridViewCommandEventArgs e)
    {
    }
    protected void dgBasket_SelectedIndexChanged(object sender, EventArgs e)
    {

    }
}