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My new book ASP.NET Core in Action, Third Edition is available now! It supports .NET 7.0, and is available as an eBook or paperback.

Introduction to the ApiExplorer in ASP.NET Core
In this post I'll show a quick example of the ApiExplorer MVC feature, and how you can use it to expose metadata about your application.…

How to format response data as XML or JSON, based on the request URL in ASP.NET Core
In this post I'll show how to use the FormatFilter, so that you can specify the output format for an action using a URL suffix, e.g. /api/values.xml as XML.…

Customising ASP.NET Core Identity EF Core naming conventions for PostgreSQL
In this post I'll describe how to configure EF Core to use snake_case for database object names instead of Camel Case, so they work better with PostgreSQL.…

Building ASP.NET Core 2.0 preview 2 packages on AppVeyor
In this post, I'll show how to update your appveyor.yml file so you can build .NET Core preview libraries on AppVeyor by installing the SDK on each build.…

Creating a validator to check for common passwords in ASP.NET Core Identity
In this post, I introduce a package for ASP.NET Core Identity that lets you validate a user hasn't used one of the most common 100,000 passwords.…

Creating custom password validators for ASP.NET Core Identity
In this post, I describe the password validation settings for ASP.NET Core Identity, how to customise them, and how to write a custom password validator.…

