Creating a Student Class with Fields and Methods in C# WebForms

Introduction

Object-Oriented Programming (OOP) in C# allows us to model real-world entities as classes and objects.
In this example, we’ll create a Student class with fields, properties, and methods to store and display student details in an ASP.NET WebForms application.

Objective

Create a Student class with fields like Name, Age, and Course.
Add a method to display student details.
Access the class in a WebForm and show the details dynamically.

C# WebForms Real-Time Example

Step 1: ASPX Page (StudentDetails.aspx)

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="StudentDetails.aspx.cs" Inherits="WebApp.StudentDetails" %>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Student Class Example in C# WebForms</title>
</head>
<body>
    <form id="form1" runat="server">
        <div style="font-family: Arial; margin: 50px;">
            <h2>Student Details Example</h2>
            <asp:Label ID="Label1" runat="server" Text="Enter Name: "></asp:Label>
            <asp:TextBox ID="txtName" runat="server"></asp:TextBox><br /><br />

            <asp:Label ID="Label2" runat="server" Text="Enter Age: "></asp:Label>
            <asp:TextBox ID="txtAge" runat="server"></asp:TextBox><br /><br />

            <asp:Label ID="Label3" runat="server" Text="Enter Course: "></asp:Label>
            <asp:TextBox ID="txtCourse" runat="server"></asp:TextBox><br /><br />

            <asp:Button ID="btnDisplay" runat="server" Text="Show Details" OnClick="btnDisplay_Click" /><br /><br />

            <asp:Label ID="lblResult" runat="server" Font-Names="Consolas" Font-Size="Large"></asp:Label>
        </div>
    </form>
</body>
</html>

Step 2: Code-Behind (StudentDetails.aspx.cs)

using System;

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

        protected void btnDisplay_Click(object sender, EventArgs e)
        {
            // Create an object of Student class and assign values
            Student stud = new Student();

            stud.Name = txtName.Text;
            stud.Age = Convert.ToInt32(txtAge.Text);
            stud.Course = txtCourse.Text;

            // Display student details
            lblResult.Text = stud.DisplayDetails();
        }
    }

    // Step 3: Student class
    public class Student
    {
        // Fields (Encapsulated using Properties)
        public string Name { get; set; }
        public int Age { get; set; }
        public string Course { get; set; }

        // Method to display student details
        public string DisplayDetails()
        {
            return $"<b>Student Details:</b><br/>" +
                   $"Name: {Name}<br/>" +
                   $"Age: {Age}<br/>" +
                   $"Course: {Course}";
        }
    }
}

Explanation

Class Definition (Student)
- Contains fields (Name, Age, Course) and one method DisplayDetails().
- Demonstrates the concept of Encapsulation using Properties.
Object Creation (stud)
- A new object of Student is created inside the button click event.
- Values are taken from text boxes and assigned to object properties.
Method Invocation
- The method DisplayDetails() returns formatted student information.
- The result is displayed in the Label control.

Example Output

If you enter:

Name: Sandhiya
Age: 22
Course: BCA

Then output:

Student Details:
Name: Sandhiya
Age: 22
Course: BCA

Key Concepts Used

Concept	Description
Class	Blueprint for creating objects
Object	Instance of a class
Properties	Used for encapsulating data
Method	Defines behavior or operation
WebForm Controls	For user interaction (Textbox, Button, Label)

Real-Time Use Case

Such class-based designs are used in:

Student Management Systems
Employee Record Portals
Online Admission Systems
Data entry and display modules

Conclusion

This example demonstrates how to use C# classes and objects in an ASP.NET WebForms environment.

By creating a Student class and accessing it through the web interface, we achieve a clean, structured, and real-world-oriented approach to programming.