Asp net core to list the authors books on the page

ASP.NET is a widely used programming language for developing web . It provides a powerful framework for building dynamic and interactive websites. In this article, we will explore how to use ASP.NET to list the ' books on a web page.

To begin with, let's assume that we have a named “Authors” which contains information about different authors and their books. We want to display the list of books written by each author on a web page.

Firstly, we need to create a connection to the database and retrieve the required data. We can use the Entity Framework Core, a popular ORM (Object-Relational Mapping) tool, to simplify the database . Here's an example of how we can retrieve the list of authors and their books using ASP.NET Core:

Step 1: Create a Model

In order to represent the data from the “Authors” table, we need to create a model . Let's call it “Author”.


public class Author
{
    public int Id { get; set; }
    public  Name { get; set; }
    public List Books { get; set; }
}

The “Author” class has for the author's ID, name, and a list of books written by the author. We will also need to create another model class for the books. Let's call it “Book”.


public class Book
{
    public int Id { get; set; }
    public string Title { get; set; }
    public int AuthorId { get; set; }
}

The “Book” class has properties for the book's ID, title, and the ID of the author who wrote the book.

Step 2: Create a Database Context

Next, we need to create a database context class that will handle the communication with the database. Let's call it “AppDbContext”.


public class AppDbContext : DbContext
{
    public DbSet Authors { get; set; }
    public DbSet Books { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlServer("your_connection_string_here");
    }
}

The “AppDbContext” class inherits from the “DbContext” class provided by Entity Framework Core. It exposes properties for the “Authors” and “Books” tables in the database. We also override the “OnConfiguring” method to specify the connection string for the database.

Step 3: Retrieve Data from the Database

Now, we can use the database context to retrieve the list of authors and their books.


public List GetAuthorsWithBooks()
{
    using (var context = new AppDbContext())
    {
        return context.Authors.Include(a => a.Books).ToList();
    }
}

In the above code, we create an instance of the “AppDbContext” class and use the “Include” method to eagerly load the books for each author. Finally, we call the “ToList” method to retrieve the data as a list of authors.

Step 4: Display the Data on the Web Page

Finally, we can use the retrieved data to display the list of authors and their books on a web page.


@model List

Authors and Their Books

@foreach (var author in Model) {

@author.Name

    @foreach (var book in author.Books) {
  • @book.Title
  • }
}

In the above code, we define a model for the web page as a list of authors. We then iterate over each author and display their name followed by a list of their books.

Conclusion

In this article, we have explored how to use ASP.NET to list the authors' books on a web page. We have seen how to create models for representing the data, create a database context for communication with the database, retrieve the required data, and display it on a web page. By following steps, you can easily implement similar functionality in your ASP.NET applications.

ASP.NET provides a robust framework for building web applications, and with the help of tools like Entity Framework Core, database operations can be simplified. By leveraging the power of ASP.NET, you can create dynamic and interactive web pages that meet your specific requirements.

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