Today IS Sunday

Web Application

1 WEB - Fibonnaci & Prime Number

2Create a registration form having text fields for accepting, Name, Age, Email,etc Perform validations

3Create a web application for user defined exception handling( DivideByZeroException and IndexOutOfRangeException exceptions using textbox and label control)

4Create Web Form to demonstrate use of User Control. Create a label with college name and use it in a webpage.

5Display the no. of visitors on a given web page.

6Create simple application to perform following operations (Pract 1d,2a) i. Finding factorial Value ii. Money Conversion iii. Cube of given number iv. Generate Fibonacci series

7Create Web Form to demonstrate use of Ad rotator Control with five advertisements. Also demonstrate how keyword filter works.

8write and read a cookie from a clients computer.

9Create a web application to demonstrate Form Security and Windows Security with proper Authentication and Authorization properties

10Master Page to maintain a consistent layout across multiple content pages.

11Calendar control Vaction Selection.

12Create a web application to demonstrate various states of ASP.NET Pages.

13Create a simple web page to show data in Tree view control and datalist using web. Sitemap file containing navigation information.

Display the no. of visitors on a given web page.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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 id="Head1" runat="server">
    <title>Fibonacci Series and Prime Checker</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Fibonacci Series Generator</h2>
            <label>Enter Number of Terms:</label>
            <asp:TextBox ID="txtFibonacci" runat="server"></asp:TextBox>
            <asp:Button ID="btnFibonacci" runat="server" Text="Generate Fibonacci" OnClick="btnFibonacci_Click" />
            <br /><br />
            <asp:Label ID="lblFibonacciResult" runat="server" Text=""></asp:Label>
        </div>

<hr />

<div>
            <h2>Prime Number Checker</h2>
            <label>Enter a Number:</label>
            <asp:TextBox ID="txtPrime" runat="server"></asp:TextBox>
            <asp:Button ID="btnPrime" runat="server" Text="Check Prime" OnClick="btnPrime_Click" />
            <br /><br />
            <asp:Label ID="lblPrimeResult" runat="server" Text=""></asp:Label>
        </div>
    </form>
</body>
</html>
    
//Yaha Se Csharp
using System;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        }

protected void btnFibonacci_Click(object sender, EventArgs e)
        {
        int terms;
        if (int.TryParse(txtFibonacci.Text, out terms) && terms > 0)
            {
            lblFibonacciResult.Text = "Fibonacci Series: " + string.Join(", ", GenerateFibonacci(terms));
            }
        else
            {
            lblFibonacciResult.Text = "Please enter a valid positive number.";
            }
        }

private int[] GenerateFibonacci(int terms)
        {
        int[] fibonacciSeries = new int[terms];
        fibonacciSeries[0] = 0;
        if (terms > 1)
            {
            fibonacciSeries[1] = 1;
            for (int i = 2; i < terms; i++)
                {
                fibonacciSeries[i] = fibonacciSeries[i - 1] + fibonacciSeries[i - 2];
                }
            }
        return fibonacciSeries;
        }

protected void btnPrime_Click(object sender, EventArgs e)
        {
        int number;
        if (int.TryParse(txtPrime.Text, out number) && number > 1)
            {
            if (IsPrime(number))
                {
                lblPrimeResult.Text = number + " is a Prime Number.";
                }
            else
                {
                lblPrimeResult.Text = number + " is not a Prime Number.";
                }
            }
        else
            {
            lblPrimeResult.Text = "Please enter a valid number greater than 1.";
            }
        }

private bool IsPrime(int number)
        {
        if (number <= 1) return false;
        for (int i = 2; i <= Math.Sqrt(number); i++)
            {
            if (number % i == 0) return false;
            }
        return true;
        }
    }

//Defualt.aspx
    
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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 id="Head1" runat="server">
    <title>Registration Form</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Registration Form</h2>
            <label for="txtName">Name:</label>
            <asp:TextBox ID="txtName" runat="server" required="required"></asp:TextBox>
            <asp:RegularExpressionValidator ID="revName" runat="server" 
                ControlToValidate="txtName" 
                ErrorMessage="Name must contain only alphabets." 
                ValidationExpression="^[a-zA-Z\s]+$" 
                ForeColor="Red" />
            <br />

<label for="txtEmail">Email:</label>
            <asp:TextBox ID="txtEmail" runat="server" required="required"></asp:TextBox>
            <asp:RegularExpressionValidator ID="revEmail" runat="server" 
                ControlToValidate="txtEmail" 
                ErrorMessage="Invalid email format." 
                ValidationExpression="^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$" 
                ForeColor="Red" />
            <br />

<label for="txtAddress">Address:</label>
            <asp:TextBox ID="txtAddress" runat="server" required="required"></asp:TextBox>
            <asp:RequiredFieldValidator ID="rfvAddress" runat="server" 
                ControlToValidate="txtAddress" 
                ErrorMessage="Address is required." 
                ForeColor="Red" />
            <br />

<label for="txtMobile">Mobile:</label>
            <asp:TextBox ID="txtMobile" runat="server" required="required"></asp:TextBox>
            <asp:RegularExpressionValidator ID="revMobile" runat="server" 
                ControlToValidate="txtMobile" 
                ErrorMessage="Mobile must be 10 digits." 
                ValidationExpression="^\d{10}$" 
                ForeColor="Red" />
            <br />

<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
            <asp:Button ID="btnCancel" runat="server" Text="Cancel" OnClick="btnCancel_Click" />
            <asp:ValidationSummary ID="vsSummary" runat="server" 
                HeaderText="Please correct the following errors:" 
                ForeColor="Red" />
        </div>
    </form>
</body>
</html>

//Defualt.aspx.cs

using System;
using System.Web.UI;

public partial class _Default : Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        }

protected void btnSubmit_Click(object sender, EventArgs e)
        {
        if (Page.IsValid) // Check if all fields are valid
            {
            // Store the registration data in Session variables
            Session["Name"] = txtName.Text;
            Session["Age"] = txtAge.Text;
            Session["Email"] = txtEmail.Text;
            Session["Address"] = txtAddress.Text;
            Session["Mobile"] = txtMobile.Text;

// Redirect to Default2.aspx
            Response.Redirect("Default2.aspx");
            }
        }

protected void btnCancel_Click(object sender, EventArgs e)
        {
        // Clear all fields
        txtName.Text = "";
        txtAge.Text = "";
        txtEmail.Text = "";
        txtAddress.Text = "";
        txtMobile.Text = "";
        }
    }

//Defualt2 .aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!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 id="Head1" runat="server">
    <title>Registration Success</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Registration Successful!</h2>
            <p>Thank you for registering.</p>
            <h3>Your Data:</h3>
            <ul>
                <li><strong>Name:</strong> <asp:Label ID="lblName" runat="server"></asp:Label></li>
                <li><strong>Age:</strong> <asp:Label ID="lblAge" runat="server"></asp:Label></li>
                <li><strong>Email:</strong> <asp:Label ID="lblEmail" runat="server"></asp:Label></li>
                <li><strong>Address:</strong> <asp:Label ID="lblAddress" runat="server"></asp:Label></li>
                <li><strong>Mobile:</strong> <asp:Label ID="lblMobile" runat="server"></asp:Label></li>
            </ul>
        </div>
    </form>
</body>
</html>

//Default2.aspx.cs

using System;
using System.Web.UI;

public partial class Default2 : Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        if (!IsPostBack)
            {
            // Retrieve the registration data from Session and display it
            lblName.Text = Session["Name"] as string;
            lblAge.Text = Session["Age"] as string;
            lblEmail.Text = Session["Email"] as string;
            lblAddress.Text = Session["Address"] as string;
            lblMobile.Text = Session["Mobile"] as string;
            }
        }
    }

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Exception Handling Example</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Divide By Zero Exception Handling</h2>
            <label for="txtNumerator">Numerator:</label>
            <asp:TextBox ID="txtNumerator" runat="server"></asp:TextBox>
            <br /><br />
            <label for="txtDenominator">Denominator:</label>
            <asp:TextBox ID="txtDenominator" runat="server"></asp:TextBox>
            <br /><br />
            <asp:Button ID="btnDivide" runat="server" Text="Divide" OnClick="btnDivide_Click" />
            <br /><br />
            <asp:Label ID="lblDivideResult" runat="server" Text=""></asp:Label>
        </div>

<hr />

<div>
            <h2>Index Out of Range Exception Handling</h2>
            <label for="txtIndex">Enter an Index (0-4):</label>
            <asp:TextBox ID="txtIndex" runat="server"></asp:TextBox>
            <br /><br />
            <asp:Button ID="btnGetElement" runat="server" Text="Get Element" OnClick="btnGetElement_Click" />
            <br /><br />
            <asp:Label ID="lblArrayResult" runat="server" Text=""></asp:Label>
        </div>
    </form>
</body>
</html>
//Csharp Here
using System;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        }

protected void btnDivide_Click(object sender, EventArgs e)
        {
        try
            {
            int numerator = int.Parse(txtNumerator.Text);
            int denominator = int.Parse(txtDenominator.Text);

int result = numerator / denominator;
            lblDivideResult.Text = "Result: " + result.ToString();
            }
        catch (DivideByZeroException)
            {
            lblDivideResult.Text = "Error: Division by zero is not allowed.";
            }
        catch (FormatException)
            {
            lblDivideResult.Text = "Error: Please enter valid numbers.";
            }
        catch (Exception ex)
            {
            lblDivideResult.Text = "Error: " + ex.Message;
            }
        }

protected void btnGetElement_Click(object sender, EventArgs e)
        {
        try
            {
         
            int[] numbers = { 10, 20, 30, 40, 50 };

int index = int.Parse(txtIndex.Text);

int element = numbers[index];
            lblArrayResult.Text = "Element at index " + index + ": " + element.ToString();
            }
        catch (IndexOutOfRangeException)
            {
            lblArrayResult.Text = "Error: Index out of range. Please enter an index between 0 and 4.";
            }
        catch (FormatException)
            {
            lblArrayResult.Text = "Error: Please enter a valid number for the index.";
            }
        catch (Exception ex)
            {
            lblArrayResult.Text = "Error: " + ex.Message;
            }
        }
    }

//web User Control
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="CollegeName" %>

<asp:Label ID="lblCollegeName" runat="server" Text="Smt. Devkiba College"></asp:Label>

//web user Control ascxs.cs
using System;

public partial class CollegeName : System.Web.UI.UserControl
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        lblCollegeName.Text = "Smt Devkiba MohanSinhji Chauhan College";
        }
    }

//defualt.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Src="CollegeName.ascx" TagName="CollegeName" TagPrefix="uc" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>College Name Example</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Welcome to our College Website</h2>

<uc:CollegeName ID="CollegeNameControl" runat="server" />

</div>
    </form>
</body>
</html>

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Visitor Counter</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Welcome to Our Website</h2>
            <asp:Label ID="lblVisitorCount" runat="server" Text="Loading visitor count..."></asp:Label>
        </div>
    </form>
</body>
</html>
//CSharp
using System;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        if (!IsPostBack)
            {
            
            if (Application["VisitorCount"] == null)
                {
                Application["VisitorCount"] = 1; 
                }
            else
                {
               
                Application["VisitorCount"] = (int)Application["VisitorCount"] + 1;
                }

lblVisitorCount.Text = "Number of visitors: " + Application["VisitorCount"].ToString();
            }
        }
    }

//Defualt.aspx
    
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Simple Operations App</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h1>Simple Operations Application</h1>

<h3>Factorial Calculation</h3>
            <label for="txtFactorial">Enter a Number:</label>
            <asp:TextBox ID="txtFactorial" runat="server"></asp:TextBox>
            <asp:Button ID="btnFactorial" Text="Calculate Factorial" runat="server" OnClick="btnFactorial_Click" />
            <asp:Label ID="lblFactorialResult" runat="server" Text=""></asp:Label>

<h3>Money Conversion (USD to INR)</h3>
            <label for="txtMoney">Enter USD Amount:</label>
            <asp:TextBox ID="txtMoney" runat="server"></asp:TextBox>
            <asp:Button ID="btnConvertMoney" Text="Convert to INR" runat="server" OnClick="btnConvertMoney_Click" />
            <asp:Label ID="lblMoneyResult" runat="server" Text=""></asp:Label>

<h3>Cube of a Number</h3>
            <label for="txtCube">Enter a Number:</label>
            <asp:TextBox ID="txtCube" runat="server"></asp:TextBox>
            <asp:Button ID="btnCube" Text="Calculate Cube" runat="server" OnClick="btnCube_Click" />
            <asp:Label ID="lblCubeResult" runat="server" Text=""></asp:Label>

<h3>Fibonacci Series</h3>
            <label for="txtFibonacci">Enter Number of Terms:</label>
            <asp:TextBox ID="txtFibonacci" runat="server"></asp:TextBox>
            <asp:Button ID="btnFibonacci" Text="Generate Fibonacci Series" runat="server" OnClick="btnFibonacci_Click" />
            <asp:Label ID="lblFibonacciResult" runat="server" Text=""></asp:Label>
        </div>
    </form>
</body>
</html>

//defualt.aspx.cs

using System;
using System.Text;
using System.Linq;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        }

protected void btnFactorial_Click(object sender, EventArgs e)
        {
        int num;
        if (int.TryParse(txtFactorial.Text, out num) && num >= 0)
            {
            lblFactorialResult.Text = "Factorial: " + Factorial(num).ToString();
            }
        else
            {
            lblFactorialResult.Text = "Please enter a valid non-negative integer.";
            }
        }

private int Factorial(int n)
        {
        if (n <= 1)
            return 1;
        else
            return n * Factorial(n - 1);
        }

protected void btnConvertMoney_Click(object sender, EventArgs e)
        {
        decimal usdAmount;
        const decimal conversionRate = 82.5m; 
        if (decimal.TryParse(txtMoney.Text, out usdAmount) && usdAmount >= 0)
            {
            lblMoneyResult.Text = "INR: " + (usdAmount * conversionRate).ToString("F2");
            }
        else
            {
            lblMoneyResult.Text = "Please enter a valid amount.";
            }
        }

protected void btnCube_Click(object sender, EventArgs e)
        {
        int num;
        if (int.TryParse(txtCube.Text, out num))
            {
            lblCubeResult.Text = "Cube: " + (num * num * num).ToString();
            }
        else
            {
            lblCubeResult.Text = "Please enter a valid integer.";
            }
        }

protected void btnFibonacci_Click(object sender, EventArgs e)
        {
        int terms;
        if (int.TryParse(txtFibonacci.Text, out terms) && terms > 0)
            {
            lblFibonacciResult.Text = "Fibonacci Series: " + string.Join(", ", Fibonacci(terms).Select(i => i.ToString()).ToArray());
            }
        else
            {
            lblFibonacciResult.Text = "Please enter a valid positive integer.";
            }
        }

private int[] Fibonacci(int n)
        {
        int[] series = new int[n];
        if (n >= 1) series[0] = 0;
        if (n >= 2) series[1] = 1;

for (int i = 2; i < n; i++)
            {
            series[i] = series[i - 1] + series[i - 2];
            }
        return series;
        }
    }

//Defualt.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:AdRotator ID="AdRotator1" runat="server" 
                AdvertisementFile="~/Ads.xml" 
                KeywordFilter="Technology" />
            
            <br />

<asp:Label ID="lblMessage" runat="server" Text="Currently filtered for Technology ads" />

</div>
    </form>
</body>
</html>

//Defualt.aspx.cs

using System;
using System.Web.UI;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            
            AdRotator1.KeywordFilter = "Technology";
            lblMessage.Text = "Current filtered for Technology ads";
        }
    }

protected void ChangeFilter(string keyword)
    {
        AdRotator1.KeywordFilter = keyword;
        lblMessage.Text = "Currently filtered for {keyword} ads";
    }
}

//Ads.xml

<?xml version="1.0" encoding="utf-8" ?>
<Advertisements>
  <Ad>
    <ImageUrl>~/Images/ad1.jpg</ImageUrl>
    <NavigateUrl>http://www.google.com</NavigateUrl>
    <AlternateText>Ad 1</AlternateText>
    <Keyword>Technology</Keyword>
    <Impressions>50</Impressions>
  </Ad>
  <Ad>
    <ImageUrl>~/Images/ad2.jpg</ImageUrl>
    <NavigateUrl>http://www.google.com</NavigateUrl>
    <AlternateText>Ad 2</AlternateText>
    <Keyword>Sports</Keyword>
    <Impressions>30</Impressions>
  </Ad>
  <Ad>
    <ImageUrl>~/Images/ad3.jpg</ImageUrl>
    <NavigateUrl>http://www.google.com</NavigateUrl>
    <AlternateText>Ad 3</AlternateText>
    <Keyword>Technology</Keyword>
    <Impressions>40</Impressions>
  </Ad>
  <Ad>
    <ImageUrl>~/Images/ad4.jpg</ImageUrl>
    <NavigateUrl>http://www.google.com</NavigateUrl>
    <AlternateText>Ad 4</AlternateText>
    <Keyword>Fashion</Keyword>
    <Impressions>20</Impressions>
  </Ad>
  <Ad>
    <ImageUrl>~/Images/ad5.jpg</ImageUrl>
    <NavigateUrl>http://www.google.com</NavigateUrl>
    <AlternateText>Ad 5</AlternateText>
    <Keyword>Sports</Keyword>
    <Impressions>10</Impressions>
  </Ad>
</Advertisements>

//Defualt.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Button ID="btnWriteCookie" runat="server" Text="Write Cookie" OnClick="btnWriteCookie_Click" />
            <asp:Button ID="btnReadCookie" runat="server" Text="Read Cookie" OnClick="btnReadCookie_Click" />

<asp:Label ID="lblResult" runat="server" Text=""></asp:Label>
        </div>
    </form>
</body>
</html>

//defualt.aspx.cs

using System;
using System.Web;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        }

protected void btnWriteCookie_Click(object sender, EventArgs e)
        {
        HttpCookie userCookie = new HttpCookie("UserInfo");
        userCookie["Username"] = "RahulYadav";
        userCookie["Email"] = "rahul.yadav@gmail.com";
        userCookie.Expires = DateTime.Now.AddDays(1);
        Response.Cookies.Add(userCookie);
        lblResult.Text = "cookie write ho gya !";
        }

protected void btnReadCookie_Click(object sender, EventArgs e)
        {
        if (Request.Cookies["UserInfo"] != null)
            {
            HttpCookie userCookie = Request.Cookies["UserInfo"];
            string username = userCookie["Username"];
            string email = userCookie["Email"];
            lblResult.Text = String.Format("Cookie Get: Username = {0}, Email = {1}", username, email);
            }
        else
            {
            lblResult.Text = "No cookie found!";
            }
        }
    }

//Defualt .aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Login Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Login Page</h2>
            <p>login through your login windows login data</p>
        </div>
    </form>
</body>
</html>

//Defualt.aspx.cs
using System;
using System.Web.UI;

public partial class _Default : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        if (User.Identity.IsAuthenticated)
            {
            Response.Redirect("Default2.aspx");
            }
        }
    }

//Defualt2.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="_Default2" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Home Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Welcome to the Application</h2>
            <p>This page is avialable for log users only</p>
        </div>
    </form>
</body>
</html>

//defualt.aspx.cs
using System;
using System.Web.UI;

public partial class _Default2 : System.Web.UI.Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        Response.Write("Welcome, " + User.Identity.Name);
        }
    }

//web.congig
<?xml version="1.0"?>
<configuration>
  <system.web>
    <authentication mode="Windows"/>
    <authorization>
      <deny users="?"/>
      <allow users="*"/>
    </authorization>
    <compilation debug="true"/>
  </system.web>

<system.webServer>
    <security>
      <authentication>
        <windowsAuthentication enabled="true"/>
        <anonymousAuthentication enabled="false"/>
      </authentication>
    </security>
  </system.webServer>
</configuration>

//MasterPage.master
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>

<!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>Master Page Demo </title>
    <asp:ContentPlaceHolder id="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <h1>Indian Events</h1>
    
    <ul>
   
     <li><a href="Default.aspx">Home</a></li>
     <li><a href="Default2.aspx">Diwali</a></li>
     <li><a href="Default3.aspx">Holi</a></li>
     </ul>
    <div>
        <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
        
        </asp:ContentPlaceHolder>
    </div>
    <h2>Footer</h2>
    </form>
</body>
</html>

//Defualt.aspx
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<h2>Welcome to Indian Cultural Events</h2>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
</asp:Content>

//default2.apsx
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>Happy Diwali</h2>
</asp:Content>

//defualt3.aspx
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>Happy Holi</h2>
</asp:Content>

//default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Vacation Planner</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Select Your Vacation Dates</h2>
            
            <h3>Start Date:</h3>
            <asp:Calendar ID="CalendarStart" runat="server" OnSelectionChanged="CalendarStart_SelectionChanged"></asp:Calendar>
            
            <h3>End Date:</h3>
            <asp:Calendar ID="CalendarEnd" runat="server" OnSelectionChanged="CalendarEnd_SelectionChanged"></asp:Calendar>

<h3>Vacation Summary:</h3>
            <p>Start Date: <asp:Label ID="lblStartDate" runat="server" Text="Not selected"></asp:Label></p>
            <p>End Date: <asp:Label ID="lblEndDate" runat="server" Text="Not selected"></asp:Label></p>
            <p>Total Vacation Days: <asp:Label ID="lblTotalDays" runat="server" Text="0"></asp:Label></p>

<asp:Button ID="btnCalculate" runat="server" Text="Calculate Vacation Days" OnClick="btnCalculate_Click" />
        </div>
    </form>
</body>
</html>

//Defualt.aspx.cs

using System;
using System.Web.UI;

public partial class _Default : Page
    {
    DateTime startDate;
    DateTime endDate;

protected void CalendarStart_SelectionChanged(object sender, EventArgs e)
        {
        startDate = CalendarStart.SelectedDate;
        lblStartDate.Text = startDate.ToString("D");
        }

protected void CalendarEnd_SelectionChanged(object sender, EventArgs e)
        {
        endDate = CalendarEnd.SelectedDate;
        lblEndDate.Text = endDate.ToString("D");
        }

protected void btnCalculate_Click(object sender, EventArgs e)
        {
        if (CalendarStart.SelectedDate != DateTime.MinValue && CalendarEnd.SelectedDate != DateTime.MinValue)
            {
            if (CalendarEnd.SelectedDate >= CalendarStart.SelectedDate)
                {
                int totalDays = (CalendarEnd.SelectedDate - CalendarStart.SelectedDate).Days + 1;
                lblTotalDays.Text = totalDays.ToString();
                }
            else
                {
                lblTotalDays.Text = "Invalid: End date must be after or the same as start date!";
                }
            }
        else
            {
            lblTotalDays.Text = "Please select both start and end dates.";
            }
        }
    }

//Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>ASP.NET Page States Demo</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>ASP.NET Page States Demo</h2>
            <h3>View State:</h3>
            <asp:TextBox ID="txtViewState" runat="server"></asp:TextBox>
            <asp:Button ID="btnSaveViewState" runat="server" Text="Save ViewState" OnClick="btnSaveViewState_Click" />
            <asp:Label ID="lblViewState" runat="server" Text=""></asp:Label>

<h3>Session State:</h3>
            <asp:TextBox ID="txtSessionState" runat="server"></asp:TextBox>
            <asp:Button ID="btnSaveSessionState" runat="server" Text="Save SessionState" OnClick="btnSaveSessionState_Click" />
            <asp:Label ID="lblSessionState" runat="server" Text=""></asp:Label>

<h3>Application State:</h3>
            <asp:TextBox ID="txtApplicationState" runat="server"></asp:TextBox>
            <asp:Button ID="btnSaveApplicationState" runat="server" Text="Save ApplicationState" OnClick="btnSaveApplicationState_Click" />
            <asp:Label ID="lblApplicationState" runat="server" Text=""></asp:Label>

<h3>Postback State:</h3>
            <asp:Label ID="lblPostback" runat="server" Text="Page loaded."></asp:Label>
            <asp:Button ID="btnPostback" runat="server" Text="Trigger Postback" OnClick="btnPostback_Click" />
        </div>
    </form>
</body>
</html>

//Defualt.aspx.cs

using System;
using System.Web.UI;

public partial class _Default : Page
    {
    protected void Page_Load(object sender, EventArgs e)
        {
        if (!IsPostBack)
            {
            lblPostback.Text = "This is the initial load.";
            }
        else
            {
            lblPostback.Text = "Postback occurred.";
            }
        }

protected void btnSaveViewState_Click(object sender, EventArgs e)
        {
        ViewState["UserInput"] = txtViewState.Text;
        lblViewState.Text = "ViewState saved: " + ViewState["UserInput"];
        }

protected void btnSaveSessionState_Click(object sender, EventArgs e)
        {
        Session["UserInput"] = txtSessionState.Text;
        lblSessionState.Text = "SessionState saved: " + Session["UserInput"];
        }

protected void btnSaveApplicationState_Click(object sender, EventArgs e)
        {
        Application["UserInput"] = txtApplicationState.Text;
        lblApplicationState.Text = "ApplicationState saved: " + Application["UserInput"];
        }

protected void btnPostback_Click(object sender, EventArgs e)
        {
        lblPostback.Text = "Postback triggered.";
        }
    }

//Web.sitemap
<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0">
  <siteMapNode url="~/Default.aspx" title="Home" >
    <siteMapNode url="~/Default2.aspx" title="Page 1" />
    <siteMapNode url="~/Default3.aspx" title="Page 2" />
  </siteMapNode>
</siteMap>

//Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
<%@ Register TagPrefix="asp" Namespace="System.Web.UI.WebControls" Assembly="System.Web" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>TreeView and DataList Example</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:TreeView ID="TreeView1" runat="server"></asp:TreeView>
            <asp:DataList ID="DataList1" runat="server" RepeatDirection="Horizontal">
                <ItemTemplate>
                    <div>
                        <h3><%# Eval("Title") %></h3>
                        <p><%# Eval("Description") %></p>
                    </div>
                </ItemTemplate>
            </asp:DataList>
        </div>
    </form>
</body>
</html>

//Defualt.aspx.cs
  
using System;
using System.Data;

public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            // Populate TreeView
            TreeNode rootNode = new TreeNode("Root Node");
            rootNode.ChildNodes.Add(new TreeNode("Child Node 1"));
            rootNode.ChildNodes.Add(new TreeNode("Child Node 2"));
            TreeView1.Nodes.Add(rootNode);

// Populate DataList
            DataTable dt = new DataTable();
            dt.Columns.Add("Title");
            dt.Columns.Add("Description");

dt.Rows.Add("Item 1", "Description for Item 1");
            dt.Rows.Add("Item 2", "Description for Item 2");

DataList1.DataSource = dt;
            DataList1.DataBind();
        }
    }
}

//web.config
  
<configuration>
  <system.web>
    <siteMap enabled="true" />
  </system.web>
</configuration>

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