C# (pronounced see sharp, like the musical note ) is a general-purpose, multi-paradigm programming language encompassing strong typing, lexically scoped, declarative, imperative, functional, generic, object-oriented, and component-oriented programming disciplines. It was introduced in 2000 by Microsoft as part of its .NET initiative, and later approved as an international standard by Ecma (ECMA-334) and ISO (ISO/IEC 23270:2018).
Feature is not available in C# 10.0. Please use language version 11.0 or later. There are two ways to approach this: Language version is greyed out and cannot be modified The Language version cannot be changed from the Properties window of the project. The version is linked to the target .NET framework version of your…
.NET 6 introduced a few new helper methods to deal with throwing exceptions, and one of them is ThrowIfNull. The usage is simple: The method will throw a ArgumentNullException when myParam is null. It will do nothing otherwise. ThrowIfNull can take in two parameters: Note: paramName uses CallerArgumentExpressionAttribute to retrieve the name of your parameter…
In order to retrieve an embedded resource in .NET Core, we first need to understand how the resource name is composed. It’s got 3 elements, all joined by dots (.): Let’s take a concrete example. We have a project (assembly) with a root namespace MyApp.Core. Inside our project we’ve got a folder + subfolder like…
There are two key differences compared to ASP.NET: To get started, add an appsettings.json file in your shared project. Make sure you set it’s Build Action to Embeded Resource. Add some keys + value in the file that we can use for testing. For example: Next, we need to get hold of the resource stream….
When dealing with mobile clients, it’s not always easy to get them on the same network as your development machine and even when you do, localhost will have a different meaning so you need to use IPs and change bindings and disable SSL or trust self-signed certificates, in short it’s a pain. Say hello to…
Ever wished you’d declare something which gets disposed automatically when it’s enclosing scope finishes executing without adding yet another set of curly braces and indentation to your code? You are not alone. Say hello to C# 8 using declarations 🥰. With using var you can now do: instead of: No more unecesary curly brackets, no…
The operator enables you to assign the right-hand operand value to the left-hand operand only if the left-hand operand value evaluates to null. Let’s take a very basic example: In the example above we declare a nullable int variable i and then make two null-coalescing assignments on it. During the first assignment i will evaluate…
I’ve started playing with animations in Xamarin Forms only recently and created a cool background animation for one of my apps (Charades for Dota 2) which I thought I would share. So without any extra introduction, this is the final result: The GIF is a bit jittery but that’s just because by PC can’t handle…
This is a question that came after during discussion with a colleague over some company worth over 20 trillion dollars – and we just couldn’t imagine how that much money would look like in cash. Just to get an idea of it, we calculated how many hundred dollar bills it would take to circle the…
To add speech recognition to our app we will be using the newly released version of the Windows Phone toolkit (release June 2013) – which adds a nice new control called SpeechTextBox (that does exactly what you think). You can get the latest build using NuGet or you can download the source from CodePlex. Once you’ve…
I’ve covered in a previous post how to create wide tiles for your Windows Phone 7 application. Now it’s time to bring them to life. The easiest way to do so is by using a ScheduledTaskAgent. To create one go ahead and add a new project to your solution and from the project templates list…
I’ve recently come across an article in the Nokia Developer Wiki about creating live tiles (including wide tile) for both Windows Phone 7 and Windows Phone 8 by writing a single piece of code that works in both versions of the OS. To do this you will need to use the MangoPollo library which you…