Core MVC Tutorial: Building a Simple Web Application323

Core MVC is a free and open-source web application framework developed by Microsoft. It is a powerful and flexible framework that allows developers to create dynamic and maintainable web applications. This tutorial will provide a step-by-step guide on how to build a simple Core MVC web application.

Prerequisites

Before you start, you will need the following prerequisites:* Visual Studio 2019 or later
* .NET Core SDK 3.1 or later
* A text editor (such as Notepad++ or Sublime Text)

Creating a New Core MVC Project

To create a new Core MVC project, open Visual Studio and select "File" -> "New" -> "Project". In the "New Project" dialog box, select the " Core Web Application" template and click "Next".

In the "Configure your new project" dialog box, enter a name for your project and select the " Core 3.1" target framework. Click "Create" to create the project.

Understanding the Project Structure

Once you have created a new Core MVC project, you will notice that the project structure is organized into several folders and files. Here is a brief overview of the most important folders and files:* Controllers: This folder contains the controller classes for your web application. Controllers handle user requests and return responses.
* Models: This folder contains the model classes for your web application. Models represent the data that is used by your web application.
* Views: This folder contains the view templates for your web application. Views are used to render the user interface for your web application.

Creating a New Controller

To create a new controller, right-click on the "Controllers" folder in the Solution Explorer and select "Add" -> "New Item". In the "Add New Item" dialog box, select the "Controller" template and click "Add".

In the "Add Controller" dialog box, enter a name for your controller and select the "MVC Controller with views, using Entity Framework" template. Click "Add" to create the controller.

Creating a New Model

To create a new model, right-click on the "Models" folder in the Solution Explorer and select "Add" -> "New Item". In the "Add New Item" dialog box, select the "Class" template and click "Add".

In the "Add New Item" dialog box, enter a name for your model and click "Add".

Creating a New View

To create a new view, right-click on the "Views" folder in the Solution Explorer and select "Add" -> "New Item". In the "Add New Item" dialog box, select the "View" template and click "Add".

In the "Add New Item" dialog box, enter a name for your view and click "Add".

Configuring the Routes

In Core MVC, the routes are used to define how URLs are mapped to controllers and actions. The routes are configured in the "" file. Here is an example of a route configuration:```csharp
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (())
{
();
}
();
(endpoints =>
{
(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
```

In this example, the "default" route maps URLs to the "Index" action of the "Home" controller. The "{controller}" and "{action}" placeholders represent the controller and action names, respectively. The "{id?}" placeholder represents an optional parameter.

Running the Application

To run the application, press F5 or click the "Run" button in the Visual Studio toolbar. The application will be launched in a web browser.

This was a brief overview of how to build a simple Core MVC web application. For more information, please refer to the official Core documentation.

2024-11-12

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