You need to know the fundamentals of C#, including the following:

• How to create variables and reference them, including arrays and objects
• How to create classes and use them
• How to create conditional statements with the if and else keywords

You need to know the basics of JavaScript, including the following:

• How to create variables and reference them, including arrays and objects
• How to create functions and call them
• How to create conditional statements with the if and else keywords

You need to know the basics of HTML, including the following:

• Basic HTML tags, such as div, ul, p, a, h1, and h2, and how to compose them together to create a web page
• How to reference a CSS class to style an HTML element

You need to have an understanding of basic CSS, including the following:

• How to size elements and include margins and padding
• How to position elements
• How to color elements

An understanding of basic SQL is helpful, but not essential.

You will need the following technologies installed on your computer:

• Google Chrome: This can be installed at https://www.google.com/chrome/.
• Visual Studio 2019: This can be download and installed from https://visualstudio.microsoft.com/vs/.
• .NET Core 3: This can be downloaded and installed from https://dotnet.microsoft.com/download/dotnet-core.
• Visual Studio Code: This can be downloaded and installed from https://code.visualstudio.com/.
• Node.js and npm: This can be download and installed from https://nodejs.org/. If you already have these installed, make sure that Node.js is at least version 8.2 and that npm is at least version 5.2.
• SQL Server 2017 Express Edition: This can be downloaded and installed from https://www.microsoft.com/en-gb/sql-server/sql-server-editions-express.
• SQL Server Management Studio: This can be downloaded and installed from https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-2017.

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the Support tab.
3. Click on Code Downloads.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/ASP.NET-Core-3-and-React-17. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://static.packt-cdn.com/downloads/9781789950229_ColorImages.pdf.

Visit the following link to check out videos of the code being run:

http://bit.ly/2sZjjlp

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Let's create a file called .eslintrc.json in the frontend folder with the following code."

A block of code is set as follows:

{
  "extends": "react-app"
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

const App: React.FC = () => {
  const unused = 'something';
  return (
    ...
  );
};

Any command-line input or output is written as follows:

> cd frontend
> npm start

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Click on the Install button to install the extension and then the Reload button to complete the installation."