2. Slip-1 Problem Statement
Q. Write a C#.Net program to accept and display ‘n’ customer’s details such as customer_no, Name, address, item_no, quantity, and price. Display the total price of all items. 25 Marks
Answer:
Default.aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="YourNamespace._Default" %>
<!DOCTYPE html>
<html>
<head runat="server">
<title>Store</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2>Welcome to the Store</h2>
<label for="lstItems">Select an item:</label>
<asp:ListBox ID="lstItems" runat="server" AutoPostBack="True" OnSelectedIndexChanged="lstItems_SelectedIndexChanged">
<asp:ListItem Text="Laptop" Value="1" />
<asp:ListItem Text="Smartphone" Value="2" />
<asp:ListItem Text="Headphones" Value="3" />
</asp:ListBox>
<br />
<asp:Image ID="imgProduct" runat="server" Width="200px" Height="200px" />
<br />
<asp:Button ID="btnShowCost" runat="server" Text="Show Cost" OnClick="btnShowCost_Click" />
<br />
<asp:Label ID="lblCost" runat="server" ForeColor="Blue"></asp:Label>
</div>
</form>
</body>
</html>
Default.aspx.cs:
using System;
namespace YourNamespace
{
public partial class _Default : System.Web.UI.Page
{
private readonly Dictionary<string, (string imageUrl, double cost)> storeItems = new Dictionary<string, (string, double)>
{
{ "Laptop", ("~/Images/laptop.jpg", 999.99) },
{ "Smartphone", ("~/Images/smartphone.jpg", 499.99) },
{ "Headphones", ("~/Images/headphones.jpg", 199.99) }
};
protected void Page_Load(object sender, EventArgs e)
{
}
protected void lstItems_SelectedIndexChanged(object sender, EventArgs e)
{
string selectedItem = lstItems.SelectedItem.Text;
if (storeItems.ContainsKey(selectedItem))
{
imgProduct.ImageUrl = storeItems[selectedItem].imageUrl;
}
}
protected void btnShowCost_Click(object sender, EventArgs e)
{
string selectedItem = lstItems.SelectedItem?.Text;
if (!string.IsNullOrEmpty(selectedItem) && storeItems.ContainsKey(selectedItem))
{
double cost = storeItems[selectedItem].cost;
lblCost.Text = $"The cost of {selectedItem} is ${cost:F2}.";
}
else
{
lblCost.Text = "Please select an item.";
}
}
}
}