Book Image

Blazor WebAssembly by Example, 2e - Second Edition

By : Toi B. Wright
5 (1)
Book Image

Blazor WebAssembly by Example, 2e - Second Edition

5 (1)
By: Toi B. Wright

Overview of this book

Blazor WebAssembly helps developers build web applications without the need for JavaScript, plugins, or add-ons. With its continued growth in popularity, getting started with Blazor now can open doors to new career paths and exciting projects – and Blazor WebAssembly by Example will make your first steps easier. This is a project-based guide that will teach you how to build single-page web applications with Blazor, focusing heavily on the practical over the theoretical by providing detailed step-by-step instructions for each project. The author also includes a video for each project showing her following the step-by-step instructions, so readers can use them if they're unsure about any particular step. In this updated edition, you'll start by building simple standalone web applications and gradually progress to developing more advanced hosted web applications with SQL Server backends. Each project will cover a different aspect of the Blazor WebAssembly ecosystem, such as Razor components, JavaScript interop, security, event handling, debugging on the client, application state, and dependency injection. The book’s projects get more challenging as you progress, but you don’t have to complete them in order, which makes this book a valuable resource for beginners as well as those who just want to dip into specific topics. By the end of this book, you will have experience and lots of know-how on how to build a wide variety of single-page web applications with .NET, Blazor WebAssembly, and C#.
Table of Contents (15 chapters)
13
Other Books You May Enjoy
14
Index

Using the OpenWeather One Call API

The data source for the project in this chapter is a free API provided by OpenWeather. It is called the OpenWeather One Call API (https://openweathermap.org/api/one-call-api). This API can return current, forecast, and historical weather data. We will be using it to access the local forecast for the next 5 days. This is the format of an API call using the OpenWeather One Call API:

https://api.openweathermap.org/data/2.5/onecall?lat={lat}&lon={lon}&appid={API key}

These are the parameters for the OpenWeather One Call API:

  • lat: Latitude. This parameter is required.
  • lon: Longitude. This parameter is required.
  • appid: API key. This parameter is required. After you create an account, you can manage your API keys from the API keys tab.
  • units: Units of measurement. This is set as Standard, Metric, or Imperial.
  • exclude: Excluded data. This is used to simplify data that is returned. Since we will only be using the daily forecast, we will exclude current...