Posts

If you recognize the error from the title of this post, you can jump to the solution. The problem I have a ASP.NET 5 solution with two projects, a web application project and a class library project.

When adding a class library to an ASP.NET 5 application you might get an error like “The following projects are not supported as references: - The project ClassLibrary1 has a target framework that is incompatible or has a version higher than the current project and cannot be referenced”

Full source code here. One of the very nice features of Entity Framework is the navigational properties. But it is easy to set them up in a less that optimal way.

Introduction If you read my post on Entity Framework migrations, you might be saying, “that’s amazing, but that’s all very well for new projects, but we’ve got eighty tables in place already and that code first migration ship has sailed”.

For many reasons you might want to know where a running assembly is located on your filesystem. I had to do this once when I was compiling classes at runtime and had a dependency on EntityFramework.

Full source code is provided. Overview This post gives a quick overview of how to use Entity Framework migrations and a detailed example of how to handle the addition of a new non null foreign keyed column to an existing table with data in it.

Full source code is available here. Below is an example of how to use RabbitMQ with Mass Transit service bus. See here for instructions on how to install Rabbit MQ.

Full source code is available here. A common problem is validating an object using a complicated set of rules. I started using the Fluent Validation package some time back, it is commonly used with MVC and Web API applications but can be used with in any scenario that requires validation.

Download full source code. Storing configuration preferences in the database is not a hard task. It usually involves storing the name of the preference, the value and the type in the database.

In September 2018 I wrote a new post explaining how to store enums as ints or strings with Entity Framework Core. It is a nicer solution than the one presented here.