Articles

One of the common task in a web application is to call web API’s, it could be either external API’s or internal API’s i.e. Web tier calling the APP tier.

One of the most common requirements in a web application is to generate the PDF document either for an invoice, reporting, or any other purpose. As developers are familiar with HTML it would make sense to convert HTML to PDF instead of learning the framework specific language. The open-source solution for it is using the NuGet package DinkToPdf which is a .NET Core wrapper for wkhtmltopdf. As most often the PDF documents are generated in the backend service i.e. Web API, we will explore how to implement it in the most structured way. The source code for this demo is in the GitHub CorePdfDemo repository.

When I was designing my portfolio page, I want to bring little life to the page by adding some animation when some elements are visible in the timeline, there are several libraries that could be used to achieve it like AOC, ScrollReveal, etc. But I want something that is native so I can customize it to my choice. Then I came across the Javascript inbuilt functionality “Intersection Observer API” which could easily achieve my requirement and it is quite a useful API to use in some of my future requirements. Let’s dive into this API.

Below is the tech stack for developing a web application which is free and open-source.

Web framework

.NET Core is a cross-platform (Windows, Linux and macOS) framework for developing web application, API and many more types of applications.

For web application with UI using Razor Pages template would simplify the design.

OpenId Connect is an identity protocol that allows users to sign into multiple websites with a single account. It is an Identity layer on top of OAuth 2.0 specification and its API friendly using REST and JSON message flow.