A year has passed since the official announcement of C#9, and finally came the moment when we actually decided to update it on our Xamarin project! This post is not about C#9 features, but about the upgrade process. To learn more about the features, refer to the official announcement: What's new in C# 9.0 - C# Guide C# 9.0 adds the following features and enhancements to the C# language: C# 9.0 is supported on .NET 5. For more…docs.microsoft.com

Have you noticed that the more complex the UI is, the more repetitive code appears in the ViewModel? And especially, the code related to “live” properties is duplicated. Despite the fact that refactoring is always challenging, you can start a ViewModel’s code clean-up by involving the PropertyChanged weaving library based…

Today, you will learn how to implement a pop-up dialog validation for Xamarin cross-platform apps. This post is based on a previous article about custom pop-up implementation, so be sure to check it out first: How to create a custom pop-up in Xamarin with MvvmCross in the right way Implement a custom pop-up window for Xamarin.iOS and Xamarin.Android in 15 minutesprin53.medium.com We already have a sample authorization screen. To make this sample user-friendly, we need to…

I was prompted to write this post about a universal storyboard layout in Xamarin.iOS by the issue at the MvvmCross repository. It turned out there was a question about displaying different Storyboards bound to one ViewModel, so I decided to describe my experience in solving this problem. Apple’s recommended way…

Developers often create a [Dialog/Alert/Interaction]Service to display pop-ups in Xamarin cross-platform apps. This way is suitable and clean if we need to show an info message or ask the user simple questions with positive and negative answers. But what if we need some complicated UX like a login experience? Of…

In my previous post about logging in Xamarin, I outlined what things need to be logged and how to log them in your mobile app. The next important step is to ensure that the logging infrastructure follows the “Don’t repeat yourself” (DRY) and “Separation of concerns” (SoC) principles. You can…

When the app is published, there is always a chance that unexpected issues will happen. In most cases, users will not be able to help, as they don’t know what details are important for developers and cannot explain what exactly happened with the app. Moreover, users rarely tell developers that…

Date and time is a significant thing. It appears everywhere, from sorting a library of photos to managing a schedule and selecting flights. Not all developers take this into account when working on their applications. Have you ever encountered problems when your application displays the wrong date for some users…