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VB.NET ASP.NET MVC

ASP.NET MVC (Model-View-Controller) is a web development framework provided by Microsoft for building dynamic, scalable, and maintainable web applications. In this guide, we'll cover the syntax, examples, output, explanations, use cases, important points, and a summary of working with VB.NET in the context of ASP.NET MVC.

Syntax

Controller Action Method

Function ActionName() As ActionResult
    ' Code for the action
    Return View()
End Function

View

@ModelType YourModel
@Code
    ViewData("Title") = "Title of the View"
End Code

<h2>@ViewData("Title")</h2>

Example

Controller Action Method

Imports System.Web.Mvc

Public Class HomeController
    Inherits Controller

    Function Index() As ActionResult
        ViewData("Message") = "Welcome to ASP.NET MVC using VB.NET!"
        Return View()
    End Function
End Class

View

@ModelType String

@Code
    ViewData("Title") = "Home Page"
End Code

<h2>@ViewData("Title")</h2>
<p>@Model</p>

Output

The output will be an HTML page displaying the title and message.

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Home Page</title>
</head>
<body>
    <h2>Home Page</h2>
    <p>Welcome to ASP.NET MVC using VB.NET!</p>
</body>
</html>

Explanation

  • In the controller, an action method is defined to handle requests and return a view.
  • The view contains HTML markup along with placeholders for dynamic content.

Use

VB.NET in ASP.NET MVC is used for:

  • Developing web applications following the MVC architectural pattern.
  • Handling HTTP requests and defining actions that return views.
  • Integrating with databases, services, and other resources.

Important Points

  • Views are typically located in the "Views" folder, and controller names match the file names.
  • ASP.NET MVC promotes separation of concerns with distinct models, views, and controllers.

Summary

VB.NET in ASP.NET MVC allows developers to create powerful and modular web applications. Controllers handle incoming requests, models represent the application's data and business logic, and views present the user interface. Understanding the MVC pattern and conventions simplifies the development process, making it easier to build scalable and maintainable web applications with VB.NET.

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