IMAGE
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HTML
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HTML
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="cart.aspx.cs" Inherits="Shopping_cart_cart" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
Product:<br>
<asp:DropDownList ID="ddlProducts" runat="server">
<asp:ListItem Value="4.99">Socks</asp:ListItem>
<asp:ListItem Value="34.99">Pants</asp:ListItem>
<asp:ListItem Value="14.99">Shirt</asp:ListItem>
<asp:ListItem Value="12.99">Hat</asp:ListItem>
</asp:DropDownList>
<br>
Quantity:<br>
<asp:TextBox ID="txtQuantity" runat="server" /><br>
<br>
<asp:Button ID="btnAdd" runat="server" Text="Add To Cart" OnClick="AddToCart" /><br>
<br>
<asp:DataGrid ID="dg" runat="server" ondeletecommand="dg_DeleteCommand">
<Columns>
<asp:TemplateColumn>
<ItemTemplate >
<asp:Button ID="delete_btn" runat="server" Text="Delete" CommandName ="Delete"/>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
<br>
<br>
Total:
<asp:Label ID="lblTotal" runat="server" />
</form>
</body>
</html>
Code-Behind
-----------------
using System;
using System.Collections;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class Shopping_cart_cart : System.Web.UI.Page
{
DataTable objDT;
DataRow objDR;
public void Page_Load(object s, EventArgs e)
{
if (!IsPostBack)
{
makecart();
}
}
public void makecart()
{
objDT = new DataTable("Cart");
objDT.Columns.Add("ID", typeof(int));
objDT.Columns["ID"].AutoIncrement = true;
objDT.Columns["ID"].AutoIncrementSeed = 1;
objDT.Columns.Add("Quantity", typeof(int));
objDT.Columns.Add("Product", typeof(string));
objDT.Columns.Add("Cost", typeof(Decimal));
Session["Cart"] = objDT;
}
public void AddToCart(object s, EventArgs e)
{
objDT = (DataTable)Session["Cart"];
object Product = ddlProducts.SelectedItem.Text;
objDR = objDT.NewRow();
objDR["Quantity"] = txtQuantity.Text;
objDR["Product"] = ddlProducts.SelectedItem.Text;
objDR["Cost"] = Decimal.Parse(ddlProducts.SelectedItem.Value);
objDT.Rows.Add(objDR);
Session["Cart"] = objDT;
dg.DataSource = objDT;
dg.DataBind();
bool blnMatch = false;
foreach (DataRow dr in objDT.Rows)
{
if ((objDR["Product"] == Product))
{
objDR["Quantity"] = txtQuantity.Text;
blnMatch = true;
break;
}
}
if (!blnMatch)
{
objDR = objDT.NewRow();
objDR["Quantity"] = Int32.Parse(txtQuantity.Text);
objDR["Product"] = ddlProducts.SelectedItem.Text;
objDR["Cost"] = Decimal.Parse(ddlProducts.SelectedItem.Value);
objDT.Rows.Add(objDR);
}
lblTotal.Text = "RS " + GetItemTotal();
}
Decimal GetItemTotal()
{
int intCounter;
Decimal decRunningTotal = 0;
for (intCounter = 0; (intCounter <= (objDT.Rows.Count - 1)); intCounter++)
{
objDR = objDT.Rows[intCounter];
decRunningTotal += decimal.Parse(objDR["Cost"].ToString()) * decimal.Parse(objDR["Quantity"].ToString());
}
return decRunningTotal;
}
protected void dg_DeleteCommand(object source, DataGridCommandEventArgs e)
{
objDT = (DataTable)Session["Cart"];
objDT.Rows[e.Item.ItemIndex].Delete();
Session["Cart"] = objDT;
dg.DataSource = objDT;
dg.DataBind();
lblTotal.Text = ("RS" + GetItemTotal());
}
}
