ASP — ASP.NET Web Forms

Web Forms Page

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" %>
<html>
<body>
    <form runat="server">
        <asp:TextBox ID="txtName" runat="server" />
        <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
        <asp:Label ID="lblResult" runat="server" />
    </form>
</body>
</html>

Code Behind

public partial class Default : System.Web.UI.Page
{
    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        lblResult.Text = "Hello, " + txtName.Text;
    }
}

Server Controls

Control	Description
TextBox	Text input
Button	Click button
Label	Display text
DropDownList	Dropdown
GridView	Data display
Repeater	Repeat items

ViewState

// Store in ViewState
ViewState["counter"] = 0;

// Retrieve from ViewState
int counter = (int)ViewState["counter"];

Mini Practice

Create Web Forms page
Add server controls
Handle events
Use ViewState

Up Next

Continue with ASP.NET Razor — Razor pages.

Frequently Asked Questions about ASP.NET Web Forms

What is ASP.NET Web Forms in ASP?

ASP.NET Web Forms is a fundamental concept in ASP. This lesson explains it step by step with clear examples, making it easy for beginners to understand.

How do I learn ASP.NET Web Forms?

Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn ASP.NET Web Forms.

Why is ASP.NET Web Forms important in ASP?

ASP.NET Web Forms is essential for ASP development. Understanding this concept will help you write better code and solve real-world problems more effectively.