TakeFive - what an extension 


public static class LinqExtensions
{
   public public static IQueryable<T> TakeFive(this IQueryable<T> query)
   {
      return query.Take(5);
   }
}

Comments

Post a Comment

Popular posts from this blog

IIS 7.5, HTTPS Bindings and ERR_CONNECTION_RESET

Having an website with HTTP and HTTPS bindings, running on my local IIS 7.5 server, I encountered this error with Chrome, Error 101 (net::ERR_CONNECTION_RESET) while trying to access it with HTTPS protocol. I checked the IIS and the bindings were fine, both protocols were set and self-signed certificate didn't expire yet. Since the website it wasn't accessible on the HTTPS protocol and everything seems ok at the IIS level, I suspected there was something which it can be fixed with the netsh command. The first thing to do was to list the SSL server certificate bindings: netsh http show sslcert As I expected, there was nothing shown. To "add a new SSL server certificate binding and corresponding client certificate policies for an IP address and port" (from help), netsh can be used with some basic parameters: ipport, certhash and appid. The certhash value can be read either from ISS Manager (Manage server\Server Certificates, select a certificate, click View in the ri
Read more

Verify ILogger calls with Moq.ILogger

Moq is by far the most used mocking library for .NET. It provides objects to either mimic real services implementations or to verify if they were called in a certain way by the Service Under Test. Often teams work hard to have meaningful logs in order to help with investigations, to have the possibility to define alarms based on the content of the logs, or even to help with instrumentation. If there is a log entry that resembles as an exception, then a notification might be sent to a Teams/Slack channel, an email, or even to randomly start the alarms on your team's members' cars (joking, don't do that, you know everyone ignores that Slack channel). There are many situations when an investigation ends up with no resolution, and with a promise to the client that the missing logging lines will soon be added. This it translates into development costs, reputation loss, and maybe most importantly having a missed opportunity to learn about the system's behavior in the p
Read more

Table Per Hierarchy Inheritance with Column Discriminator and Associations used in Derived Entity Types

Image
In this article I will show how to model a table per hierarchy, a bit more complex than I found in books or other articles. I'm sure this model is present in real lif,e but I really didn't have the luck to find an example on the web when I needed it most. The complexity of this model is given by the Foreign Keys ( the Associations) which need to be placed in the derived entities types and the fact the discriminator depends on more than one column. The first problem I could fix, but the next one, with the discriminator based on two or three nullable columns I couldn't do it, unless if I use a single discriminator column (ie ItemType or something). The database is very simple. It is designed for an eshop which sells products, services and also has some nice packages, that combines products and services and offers them for good prices compared with if they would be bought alone. The products and services are very different in terms of how data describes them, so the decision
Read more