Problem Statement
This lab involves creating a basic web application in Visual Studio, exploring deployment options, and testing a blank web form. You will learn to design, code, and manage web applications using Visual Basic or C#, and understand the structure of a web project in Visual Studio.
Important Options
- Location: File System, HTTP, FTP
- Language: Visual Basic, Visual C#
- Web Application Project Options: File System, Local IIS, FTP Site, Remote Site
Testing the Web Form
The application will be tested using an integrated web server, accessible via the URL: http://localhost:4325/OnlineBank/Default.aspx.
Solution Explorer
The Solution Explorer provides a high-level view of your project, including the ability to add web forms, services, and images. You will work with both Design and Code windows in Visual Studio to manage your web application components.
Coding Models
In this lab, you will explore different coding models, such as separating HTML and code-behind files or using a single file with both HTML and code. You will focus on performance, functionality, and maintenance best practices.
Demonstration of ASP.NET Page Processing
In this section, you will develop a page to demonstrate the various events raised and handled during ASP.NET page processing. Once the page object is created, it goes through a series of steps that trigger different events, each of which can be handled by the developer. Below is a short story illustrating the page processing lifecycle:
The Journey of an ASP.NET Page
Imagine you are the developer of a dynamic web page, and your page is ready to embark on a journey through the ASP.NET page processing lifecycle. It all begins when a request arrives at the server to fetch the page. Here's how the page experiences its journey:
- Page Request: It all begins when a request for the page is sent to the server. The page object is created, marking the beginning of the page's lifecycle.
- Initialization: The page starts to initialize, where all controls are created. This is where the page gathers the necessary components to handle user interactions.
- Load: The page is now loaded with data from the server. The page is ready to be populated with content based on the user’s request.
- Postback Handling: The page checks if it's a postback. If it is, it processes any data that was previously submitted, such as form data, and updates the page accordingly.
- Event Handling: At this point, any events triggered by the user (like button clicks or dropdown selections) are handled. These events allow the page to respond dynamically to user input.
- Rendering: The page is now ready to be displayed. It creates the HTML output, which is sent to the browser for rendering.
- Unload: Once the page is rendered, the page is unloaded from memory, and all resources are cleaned up.
Throughout this journey, the page raises various events such as Init, Load, PreRender, and Unload, which can be handled by the developer to customize the page's behavior. Understanding this lifecycle is crucial for building dynamic and interactive web applications.