Moving a docker image from one registry to another one can be useful to migrate images between different environments, for instance between staging and production. In this post, I describe how to copy a docker image from one registry to another using buildx. An easy way would be to use the following commands: # ⚠️ Don't use this method if you have a multi-platform image docker pull… [read more]

Windows allows to list the OneDrive folders or folders from other cloud providers. This is done by using the StorageProviderSyncRootManager class. The StorageProviderSyncRootManager class provides a static method called GetCurrentSyncRoots that returns a list of StorageProviderSyncRoot objects, which correspond to the registered cloud folders. Before using the Windows SDK, you need to update the Target… [read more]

Diacritics are a way to add additional information to a character. They are used in many languages, such as French, Spanish, and German. A common usage of diacritics is to add an accent to a letter (e.g. é). In this post, I describe how to remove diacritics from a string in .NET. In the post , I already wrote about diacritics. But let give a quick reminder. A diacritic is a glyph added to a letter. For… [read more]

C# 13 adds support for a new attribute: [OverloadResolutionPriority]. This attribute is niche, so most of you won't use it. However, it's a nice addition to the language, and it's worth knowing about it if you are writing libraries. Let's consider this simple example: Sample.Test(); // Print: Test 1 static class Sample { public static void Test() => Console.WriteLine("Test 1"); } Now, you want to update… [read more]

Sometimes you need to allow ping requests for monitoring purposes. By default, it could be disabled on Windows machines. To enable it, you can use the following command: netsh advfirewall firewall add rule name="Allow Ping" protocol=icmpv4 dir=in action=allow [read more]

Http Strict Transport Security (HSTS) is a security mechanism that instructs the browser to automatically redirect http requests to https before sending a request to the server. When you are developing a web application, you should disable HSTS for localhost. This is because enabling HSTS on localhost has implications for other applications. For instance, some applications start a local web server and… [read more]

When you need to access a shared resource, you can use the lock statement or a synchronization primitive such as a Mutex to synchronize access to the resource. However, it's easy to forget it in complex code. When you need to synchronize access to a single resource, you can use a var obj = new object(); var value = 42; lock (obj) { // You need to ensure you use lock everywhere you access the shared… [read more]

ManualResetEventSlim represents a thread synchronization event that, when signaled, must be reset manually. This is a common synchronization primitive. However, it doesn't expose a method to wait asynchronously. Hopefully, it's not too complicated to create an extension method using ThreadPool.RegisterWaitForSingleObject and TaskCompletionSource. static class Extensions { public static Task WaitAsync(this… [read more]

Microsoft Graph is a REST API that allows you to interact with Microsoft 365 services. You can use it to automate tasks such as creating users, updating their properties, or exporting data. In this post, I'll show you how to export user email addresses and aliases from Microsoft Entra using PowerShell. First, you need to install the Microsoft.Graph module: Install-Module Microsoft.Graph -Scope CurrentUser… [read more]

Someone asked me why I write blog posts. So, let's write a blog post about why I write blog posts! Reason 1: I forget things As a developer, you learn lots of new things every day. But my memory has limited capacity, so I also forget a lot of things. One solution is to dump part of my knowledge into blog posts. Also, as my blog is public, I can then use my favorite search engine to find things when… [read more]