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ref structs in C# 7.2 - .NET Concept of the Week - Episode 16

In this episode we talk about 'ref structs', which was introduced in C# 7.2. You will learn what it is, where it is used in the framework and when you should use it in your own code.

Posted on August 03, 2018
Tags: C# , .NET , Performance , .NET Concept of the Week

AWS for .NET Developers - AWS Lambda, S3, Rekognition - .NET Concept of the Week - Episode 15

In this episode we create a "Not Hotdog" clone from Silicon Valley (HBO) called "SchnitzelOrNot" with .NET and AWS. For this we use AWS Lambda with .NET Core, S3, and Amazon Rekognition.

Posted on July 24, 2018
Tags: C# , .NET , Cloud , AWS , .NET Concept of the Week

New course: C# and .NET - Advanced topics

I published a new course on Udemy. In this post I write a little bit about the course itself and I also give a few “behind the scenes” details about how such a course is made.

Posted on July 06, 2018
Tags: C# , .NET , CLR , Udemy

C# Exception Filters - .NET Concept of the Week - Episode 14

In this episode we talk about exception filters in C#. We will take a look at the generated IL code and we will also discuss that entering a catch block always unwinds the stack, which makes debugging harder and also can hurt performance. With an exception filter we can avoid this!

Posted on May 25, 2018
Tags: C# , .NET , Performance , .NET Concept of the Week

Struct layout in C# - .NET Concept of the Week - Episode 13

In this episode I talk about struct layout in C#. You will learn how C# structs are represented in memory and you will also learn how you can influence this with StructLayoutAttribute.

Posted on May 11, 2018
Tags: Performance , C# , .NET , .NET Concept of the Week

WebAssembly and Blazor - .NET Concept of the Week - Episode 9

In this episode we take a look at WebAssembly and Blazor. You will learn what WebAssembly is, and we will write C# code that we will execute in the browser with Blazor on top of WebAssemply.

Posted on March 05, 2018
Tags: Web , C# , .NET , .NET Concept of the Week

How to organize a .NET Meetup – 9 Tips for meetup organizers

Yesterday we had our 4. .NET meetup in Linz. Since it seems to become a thing that people recognize as a "regular meetup in town" I thought it's time to write about it!

Posted on February 21, 2018
Tags: Community , Talk , .NET

F# in 15 minutes - .NET Concept of the Week - Episode 7

In this episode I show you a few very cool features in F#. This is an intro video intended for .NET programmers who want to learn about functional programming and wonder what F# can offer.

Posted on February 19, 2018
Tags: F# , Functional programming , .NET , .NET Concept of the Week

ASP.NET Core Authentication with Facebook and Twitter - .NET Concept of the week - Episode 6

In this episode you will see how you can outsource authentication to Facebook and Twitter in ASP.NET Core.

Posted on February 11, 2018
Tags: ASP.NET Core , C# , .NET , .NET Concept of the Week

BenchmarkDotNet - .NET Concept of the week - Episode 5

In this episode I talk about BenchmarkDotNet.

Posted on February 05, 2018
Tags: Performance , C# , .NET , .NET Concept of the Week

Covariance and Contravariance in C# - .NET Concept of the week - Episode 4

This time I explain what covariance and contravariance are. You will learn about covariance and contravariance with delegates, arrays, and generic interfaces.

Posted on January 28, 2018
Tags: C# , .NET , .NET Concept of the Week

C# 8 Nullable Reference Types - .NET Concept of the week - Episode 3

In this episode I show you the preview C# 8 compiler and we talk about a very interesting proposal for C# 8 called nullable reference types

Posted on January 22, 2018
Tags: C# , .NET , .NET Concept of the Week

WebSocket in .NET Standard with UWP and Xamarin - .NET Concept of the week - Episode 2

The second video form my new thing is out! In this short video I show you how you can use WebSocket in a .NET Standard library and then we will use this .NET Standard library in a UWP and in a Xamarin.iOS app.

Posted on January 14, 2018
Tags: .NET , Xamarin , C# , UWP , .NET Standard , .NET Concept of the Week

CancellationToken and Task Cancellation - .NET Concept of the week - Episode 1

I decided to start something new! I will create a video every week, where I explain a concept related to .NET programming. The first video is out! It’s about CancellationToken and task cancellation.

Posted on January 07, 2018
Tags: .NET , Async , C# , .NET Concept of the Week

Build 2017 Day 2

This post is a recap of the second day of Build 2017

Posted on May 11, 2017
Tags: UWP , .NET , Xamarin , Windows , MSBuild

Build 2017 Day 1

This post is a recap of the first day of Build 2017

Posted on May 10, 2017
Tags: C# , .NET , .NET Core , ASP.NET Core , Azure , MSBuild

myTrades.Analytics - a netstandard compatible .NET technical analysis library written in F#

While working on a side project I created a netstandard compatible F# library, which basically calculates different technical analysis indicators for input data. This is mostly useful for technical stock analysis. I decided to open-source the library. This post shows what the library can do and how you can use it.

Posted on December 09, 2016
Tags: .NET , F# , FinTech , Functional programming

.csproj settings in ASP.NET Core

This is an update of my project.json settings post, which describes the same settings in the new .csproj file

Posted on November 20, 2016
Tags: .NET , ASP.NET Core , cross platform

Hosting ASP.NET Core behind Apache on Ubuntu

The official documentation for hosting on Linux only describes how to host ASP.NET Core apps behind nginx. Here is a short summary about the same for Apache.

Posted on October 18, 2016
Tags: .NET , ASP.NET Core , cross platform

Moving the blog

Finally, I managed to move my blog! This post is just a short technical summary about it.

Posted on October 16, 2016
Tags: .NET , ASP.NET Core

Referencing an F# library from C# on .NET Core

Aaaand a post again, which will be deprecated at some point: currently using both F# and C# in a .net core solution is possible, but needs some workaround. Here I describe how you can do it

Posted on July 03, 2016
Tags: F# , C# , .NET , ASP.NET Core , Interoperability

Working with .net core - my summary after 6 months with ASP.NET Core on a side project

I have a side project which I started at the beginning of this year. One of the top goals of this project is to learn new things and i'm still at the beginning of this, but I already have many things working.

Posted on June 27, 2016
Tags: C# , F# , Interoperability , .NET , ASP.NET Core

Migrating from ASP.net core RC1 to RC2 - Entity Framework Core

Asp.net core RC2 was officially released a few hours ago. I have a side-project, which I did not update until this point, so I developed on RC1-Update1 basis. The solution is a little bit bigger, it has 8 src projects and 4 tests. Most of them are C# projects and there are also a few F# projects. I have one project for the data access with Entity Framework Core.

Posted on May 16, 2016
Tags: .NET , ASP.NET Core , Entity Framework Core

project.json settings in ASP.NET Core

Lately I work a lot with ASP.NET Core and .net core. This is I think the biggest fully open source project Microsoft ever did and between RC1 and RC2 they made huge changes in the execution environment, which successfully confused me in many ways. But all this is fine, since it was only an RC1, and none said that the same stuff will RTM. In this post I summarize the most important settings in project.json

Posted on May 08, 2016
Tags: ASP.NET Core , .NET

Talk: Monitoring with Application Insights

This weekend I co-presented a talk about monitoring Azure during the Global Azure Bootcamp in Linz. This post is the written form of my part from the talk.

Posted on April 16, 2016
Tags: APM , .NET , Azure , Talk

How the evil System.Xml.Serialization.XmlSerializer class can bring down a server with 32Gb ram

This week I worked on some interesting stuff and fortunately there was a cool learning outcome from it, which is worth a blogpost, so I summarize it here.

Posted on January 24, 2016
Tags: .NET , C# , Performance , APM

Talk: The Universal Windows Platform - One codebase for Mobile, Desktop, IoT, Xbox, Hololens, etc.

On the 14th of January I gave a talk at a local technology meetup in Linz called Technologieplauscherl about the Universal Windows Platform. This post is the written form of the talk, which was intended for people who do not know UWP, but have a strong background in software development (and it's even better if you have some knowledge about C#/XAML based development).

Posted on January 14, 2016
Tags: Talk , Windows Runtime , Windows10 , UWP , C# , .NET

Porting a Windows 8 Store app to the Universal Windows Platform

Back in 2012 I published a small Windows Store app called PassworWallet, which already had a few thousand downloads over the years and when Windows 10 came out the daily 5-10 downloads went up to 15-20, so I thought it's time to release an update, so the last days I updated it to UWP. This post summarizes the update process.

Posted on December 24, 2015
Tags: UWP , C# , .NET , App Development

Test In-App Purchases in Windows Universal Apps (UWP)

The Universal Windows Platform supports In-App Purchases (IAP). This feature was already available in Windows 8/8.1, but I have not used it before. In this post I explain how you can debug an IAP in a UWP app.

Posted on November 29, 2015
Tags: UWP , C# , .NET

GC Flavors in .NET

Since I have to look up these things at least twice a year I decided to write an extremely compressed summary about the GC types/settings in the .NET framework.

Posted on January 17, 2015
Tags: .NET

Asynchronous programming in C#

Two posts from me were published on the about:performance blog about the async capabilities of C#

Posted on November 09, 2014
Tags: C# , .NET , Async

Marshalling Jagged Arrays from CLR to Native

This week I was working on some stuff where I calculated some values in C# and I wanted to send it to a native C++ layer to use the values there. The data was originally stored in a Dictionary<int List<long>>. As soon as I realised that I want to work with this in C++ it was clear that the Dictinary and the List classes are not the best, so instead of the C# collections I used a C# jagged array and I hoped that the framework can marshal it automatically. Well I was naive…

Posted on August 02, 2014
Tags: C# , C++ , .NET , Interoperability

Classes with long initialization process implemented with Tasks in C#

When I work on Windows 8 Apps I often have the situation where I have a class which has a longer initialization process (e.g. deserialising some state from the file system, loading data over the network, make some complicated calculation, etc). One solution would be to write a public 'initialize' method and call it first to initialize the class. The problem with this is that it is…

Posted on July 09, 2014
Tags: .NET , C# , Async