Tag Archives: Delegates

Dynamic certificate validation when calling Web services

There are situations when you’ll want to call Web services from C/AL, and those Web services might be protected by certificate that your local machine cannot validate directly. Web service might be secured with a self-signed certificate, or by a certificate obtained from an authority that is not globally trusted.

In all those situations, you might need to have a facility to validate certificates yourself. That’s something that’s at the fingertips of all C# developers through the ServerCertificateValidationCallback delegate. However, in C/AL, delegates are unfortunately not (yet) supported.

A friend of mine had this specific problem today, so I remembered that a short while ago I made a “how do I” video on this specific topic. Thanks, Mathias, for giving me a prod, and reminding me of a quick blog topic.

Here’s the link: https://youtu.be/NW_ZiW6J790

Top 10 things I miss in .NET Interoperability in NAV 2013

If you ask me what the top addition to the NAV technology stack over the past few years is – it’s .NET interoperability. A lot of folks, maybe you as well, would disagree, and say it’s Web services. They are important. But if you are a NAV developer, Web services don’t make your life any easier. You are programming for Web services when your requirements tell you so, but that’s it. You don’t experience those moments of truth, when it dawns on you, when you go eureka, slap your forehead and say: now this is something I solve with Web services! Not quite.

But with .NET interoperability, it’s a different story. If you know how to harness its power, there is no single project you’ll ever want to go without using .NET. It opens the door to the most powerful development framework for Windows, and it makes many impossible things possible, in pure C/AL.

There are two kinds of things in this world. Those that .NET Interoperability can do, and those it can’t. Microsoft has been steadily improving it since the initial release in 2009 R2. However, there is still much to be desired. Those small things that you cut in C# in seconds, and twist your brain inside out for hours before you realize you can’t do it in C/AL. Some of them may be in a backlog somewhere in Vedbæk, but I don’t know that, so I decided to compile a list of top 10 things I believe C/SIDE should support, and it doesn’t.

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