Getting started with Blazor
https://www.jerriepelser.com/blog/getting-started-with-blazor

Extract text from PDF is one of a common data processing task. In this article, we’ll look at the example of how to extract text from whole PDF document using the Aspose.PDF for .NET.
https://medium.com/@andruhovski/extract-text-from-pdf-in-net-standard-2-0-cf6a6bc7f7c6

Migrate existing ASP.Net Core 2.0 application to ASP.Net Core 2.1

Virendra Dugar lays out the steps to migrate an existing ASP.NET Core 2.0 application to 2.1 preview 1.
http://www.talkingdotnet.com/migrate-existing-aspnet-core-2-application-aspnet-core-2-1/

Creating a .NET Core global CLI tool for squashing images with the TinyPNG API

In this post I describe a .NET Core CLI global tool I created that can be used to compress images using the TinyPNG developer API

https://andrewlock.net/creating-a-net-core-global-cli-tool-for-squashing-images-with-the-tinypng-api/

Scaffolding ASP.NET Core API Controllers

Matt Millican walks through quickly creating API controllers to jump start your project.

https://mattmillican.com/blog/aspnetcore-controller-scaffolding

The mother of all demo apps - Exemplary fullstack Medium.com clone

Tor Hovland shares how a full stack Medium.com clone can be built using any of the supported front ends and back ends, including ASP.NET Core, React, Angular, Node, Django, and many more.

https://github.com/torhovland/realworld

Working with attachments in PDF using C#
https://medium.com/@andruhovski/working-with-attachments-in-pdf-using-c-c21e2c42e0c2

Migrating to ASP.NET Core Tag Helpers

Ed Charbeneau explores the common patterns used for ASP.NET Core Tag Helpers and covers what's needed to migrate from HTML Helpers to Tag Helpers.

https://www.telerik.com/blogs/migrating-to-asp-dotnet-core-tag-helpers

How to extract text from PDF with C# and Aspose.Cloud REST API.
https://www.reddit.com/r/aspose_pdf_for_cloud/comments/8gr5km/how_to_extract_text_from_pdf_in_c/

ASP.NET Core Unit Testing For Security Attributes

David Pine writes a unit test to check that the AuthorizeAttribute is set on various controller classes or even controller actions for his ASP.NET Core Web API endpoints.

https://davidpine.net/blog/asp-net-core-security-unit-testing/

C# 7.1, 7.2 and 7.3 - New Features (Updated)

C# 7 has added a number of new features to the language. This tutorial looks at the new features added to the minor versions of C# i.e. C# 7.1, 7.2 and and 7.3.

http://www.dotnetcurry.com/ShowArticle.aspx?ID=1437

C# ALGORITHMS
This repository is not directly related to Asp.net core, but seem to be useful in web apps.
https://github.com/aalhour/C-Sharp-Algorithms

Article: Default Interface Methods in C# 8

Default interface methods are included in a new feature proposal for C# 8, which will allow developers to use the traits programming technique. Based on an existing language feature found in Java, traits are an OOP technology that promotes the reuse of methods between unrelated classes.
By Bassam Alugili

http://www.infoq.com/articles/default-interface-methods-cs8?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=.NET

In today’s article, we will see how to perform simple CRUD operations in ASP.NET Core Web API using ADO.NET. https://www.c-sharpcorner.com/article/crud-operations-in-asp-net-core-web-api-using-ado-net/