.NET C# Java Javascript Exception

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HowTo: Run a Docker container using Azure Container Instances

Azure Container Instances There are (at least) 3 diffent ways how to run a Docker Container on Azure: Using the Web App for Containers Using Azure Kubernetes Service (AKS) Using Azure Container Instances In this blogpost we will take a small look how to run a Docker Container on this service. The “Azure Container...
13.11.2018 | 25 0 | Code-Inside Blog


This post is a result of some pretty strange SSL errors that I encountered last weekend. The scenario: I tried to setup a development environment for a website that uses a self signed SSL cert. The problem occured right after the start - especially Chrome displayed those wonderful error messages...
01.11.2018 | 51 3 | Code-Inside Blog

Be afraid of varchar(max) with async EF or ADO.NET

Last month we had changed our WCF APIs to async implementations, because we wanted all those glorious scalability improvements in our codebase. The implementation was quite easy, because our service layer did most of the time just some simple EntityFramework 6 queries. The field test went horribly wrong After we...
27.09.2018 | 60 1 | Code-Inside Blog

Migrate a .NET library to .NET Core / .NET Standard 2.0

I have a small spare time project called Sloader and I recently moved the code base to .NET Standard 2.0. This blogpost covers how I moved this library to .NET Standard. Uhmmm… wait… what is .NET Standard? If you have been living under a rock in the past year: .NET Standard is a kind of “contract” that allows the...
31.08.2018 | 118 0 | Code-Inside Blog

Improving Code

Improving code TL;DR; Things I learned: long one-liners are hard to read and understand split up your code into small, easy to understand functions less “plumping” (read infrastructure code) is the better get indentation right “Make it correct, make it clear, make it concise, make it fast. In that order.” Wes Dyer...
03.08.2018 | 87 0 | Code-Inside Blog

Easy way to copy a SQL database with Microsoft SQL Server Management Studio (SSMS)

How to copy a database on the same SQL server The scenario is pretty simple: We just want a copy of our database, with all the data and the complete scheme and permissions. 1. step: Make a back up of your source database Click on the desired database and choose “Backup” under tasks. 2. step: Use copy only or use a...
01.08.2018 | 122 1 | Code-Inside Blog

DbProviderFactories & ODP.NET: When even Oracle can be tamed

Oracle and .NET: Tales from the dark ages Each time when I tried to load data from an Oracle database it was a pretty terrible experience. I remember that I struggle to find the right Oracle driver and even when everything was installed the strange TNS ora config file popped up and nothing worked. It can be simple...
01.06.2018 | 416 1 | Code-Inside Blog

CultureInfo.GetCultureInfo() vs. new CultureInfo() - what's the difference?

The problem The problem started with a simple code: double.TryParse("1'000", NumberStyles.Any, culture, out _) Be aware that the given culture was “DE-CH” and the Swiss use the ‘ for the separator for numbers. Unfortunately the Swiss authorities have abandoned the ‘ for currencies, but it is widly used in the...
29.05.2018 | 490 0 | Code-Inside Blog

.editorconfig: Sharing a common coding style in a team

Sharing Coding Styles & Conventions In a team it is really important to set coding conventions and to use a specific coding style, because it helps to maintain the code - a lot. Of course has each developer his own “style”, but some rules should be set, otherwise it will end in a mess. Typical examples for such...
01.05.2018 | 604 0 | Code-Inside Blog

How to test your web API with .NET Core

It’s so important to test your software automatically. Unit Tests are really great for testing small, atomic parts. But you have to ensure that your complete systems works as expected. This is where web API tests comes into play. First, some words about the motivation behind this article: A lot of people don’t want...
25.04.2018 | 621 0 | Norbert Eder

Web API und Datenbankzugriff mit Go

Go aka golang wurde hauptsächlich entwickelt, um Concurrency optimal zu unterstüzten. Daher bietet sich an, eine Web API mit Go zu entwickeln. Dieser Beitrag zeigt, was dafür notwendig ist und dass dafür nicht sonderlich viel Aufwand eingesetzt werden muss. Folgendes möchte der Beitrag zeigen: Web API mit...
11.04.2018 | 256 0 | Norbert Eder

Did you know that you can run ASP.NET Core 2 under the full framework?

This post might be obvious for some, but I really struggled a couple of month ago and I’m not sure if a Visual Studio Update fixed the problem for me or if I was just blind… The default way: Running .NET Core AFAIK the framework dropdown in the normal Visual Studio project template selector (the first window) is not...
01.04.2018 | 674 0 | Code-Inside Blog

Windows Fall Creators Update 1709 and Docker Windows Containers

Who shrunk my Windows Docker image? We started to package our ASP.NET/WCF/Full-.NET Framework based web app into Windows Containers, which we then publish to the Docker Hub. Someday we discovered that one of our new build machines produced Windows Containers only half the size: Instead of a 8GB Docker image we only...
28.02.2018 | 162 0 | Code-Inside Blog

VERLIEBT in MS SQL – eXperts gesucht!

Auch in 2018 warten jede Menge attraktive Projekte auf die eXperts! Um diese stemmen zu können, benötigen wir dringend neue Kollegen. Innovation. Community. Erfolg. Als Technologiepartner realisieren wir mit Professionalität und Leidenschaft moderne, attraktive Software auf Basis erstklassiger Architekturen und...
12.02.2018 | 228 0 | SDX Flurfunk

WCF Global Fault Contracts

If you are still using WCF you might have stumbled upon this problem: WCF allows you to throw certain Faults in your operation, but unfortunatly it is a bit awkward to configure if you want “Global Fault Contracts”. With this solution here it should be pretty easy to get “Global Faults”: Define the Fault on the...
01.02.2018 | 187 0 | Code-Inside Blog

First steps to enable login with Microsoft or Azure AD account for your application

It is quite common these days to “Login with Facebook/Google/Twitter”. Of course Microsoft has something similar. If I remember it correctly the first version was called “Live SDK” with the possibility to login with your personal Microsoft Account. With Office 365 and the introduction of Azure AD we were able to...
31.12.2017 | 191 0 | Code-Inside Blog

VERMISST: Full-Stack Web-Entwickler (m/w) Frankfurt/München

Auch im neuen Jahr warten schon viele interessante Enterprise-Projekte auf uns, die wir ohne neue Kollegen nicht werden stemmen können. Deshalb suchen wir dringend nach Full-Stack Web-Entwickler (m/w) Angular, TypeScript, .NET, C# für Frankfurt und München. Bei SDX findest Du ein starkes eXpert-Team auf Augenhöhe...
08.12.2017 | 364 0 | SDX Flurfunk

Signing with SignTool.exe - don't forget the timestamp!

If you currently not touching signtool.exe at all or have nothing to do with “signing” you can just pass this blogpost, because this is more or less a stupid “Today I learned I did a mistake”-blogpost. Signing? We use authenticode code signing for our software just to prove that the installer is from us and “safe to...
02.12.2017 | 725 0 | Code-Inside Blog

Signing with SignTool.exe - don't forget the timestamp!

If you currently not touching signtool.exe at all or have nothing to do with “signing” you can just pass this blogpost, because this is more or less a stupid “Today I learned I did a mistake”-blogpost. Signing? We use authenticode code signing for our software just to prove that the installer is from us and “safe to...
01.12.2017 | 178 0 | Code-Inside Blog

Introducing Electron.NET - building Electron Desktop Apps with ASP.NET Core

The last couple of weeks I worked with my buddy Gregor Biswanger on a new project called “Electron.NET“. As you might already guess: It is some sort of bridge between the well known Electron and .NET. If you don’t know what Electron is: It helps to build desktop apps written in HTML/CSS/Javascript The idea Gregor...
01.11.2017 | 940 0 | Code-Inside Blog

dnSpy - a OSS IL decompiler and debugger

My colleague was fighting against a nasty bug, that only occures on one machine. Unfortunatly this machine was not a development machine (no VS installed) and we didn’t want to mess with VS remote debugging, because (AFAIK) his would need some additional setup but we were not allowed to install anything. Soooo… he...
01.10.2017 | 549 2 | Code-Inside Blog

IdentityServer3 with WindowsAuthentication with ASP.NET WebApi & ASP.NET & WPF App

Please note: In my sample and in this blogpost I cover IdentityServer 3, because last year when I was working on the sample and our real implementation IdentityServer4 (a rewrite of IdentityServer 3) was in beta. My guess is, that most stuff should still apply even if you are using IdentityServer4, but I didn’t test...
31.08.2017 | 482 0 | Code-Inside Blog

How to convert .crt & .key files to a .pfx

The requirements are simple: You will need the .cer with the corresponding .key file and need to download OpenSSL. If you are using Windows without the awesome Linux Subsystem, take the latest pre-compiled version for Windows from this or this site. Otherwise with Bash on Windows you can just use OpenSSL via its...
01.08.2017 | 942 2 | Code-Inside Blog

Non-cryptographic hash functions for .NET

Creating hashs is quite common to check if content X has changed without looking at the whole content of X. Git for example uses SHA1-hashs for each commit. SHA1 itself is a pretty old cryptographic hash function, but in the case of Git there might have been better alternatives available, because the “to-be-hashed”...
30.06.2017 | 272 0 | Code-Inside Blog

Digitale Transformation mit Microservices – Technical Council

Hallo liebe Software-Architekten, -Entwickler und Projektleiter, herzlich lade ich Euch zum Technical Council „Digitale Transformation mit Microservices“ nach Frankfurt (27.06.) oder München (September 2017) ein. Digitale Transformation stellt Unternehmen vor die Herausforderung, Geschäftsprozesse flexibel und...
19.06.2017 | 224 0 | SDX Flurfunk
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