Avalonia | Develop Desktop , Embedded , Mobile and WebAssembly

 by   AvaloniaUI C# Version: 11.0.0-rc1.1 License: MIT

kandi X-RAY | Avalonia Summary

kandi X-RAY | Avalonia Summary

Avalonia is a C# library typically used in User Interface applications. Avalonia has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Avalonia is a cross-platform UI framework for dotnet, providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, MacOs. Avalonia is mature and production ready. We also have in beta release support for iOS, Android and in early stages support for browser via WASM.

            kandi-support Support

              Avalonia has a medium active ecosystem.
              It has 18252 star(s) with 1555 fork(s). There are 447 watchers for this library.
              There were 8 major release(s) in the last 12 months.
              There are 1242 open issues and 4066 have been closed. On average issues are closed in 339 days. There are 41 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of Avalonia is 11.0.0-rc1.1

            kandi-Quality Quality

              Avalonia has 0 bugs and 0 code smells.

            kandi-Security Security

              Avalonia has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              Avalonia code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              Avalonia is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              Avalonia releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.
              Avalonia saves you 23 person hours of effort in developing the same functionality from scratch.
              It has 252 lines of code, 0 functions and 2387 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Avalonia
            Get all kandi verified functions for this library.

            Avalonia Key Features

            No Key Features are available at this moment for Avalonia.

            Avalonia Examples and Code Snippets

            No Code Snippets are available at this moment for Avalonia.

            Community Discussions


            Boost::process hide console on linux
            Asked 2022-Mar-28 at 06:35

            According to this question : Boost::process hide console on windows

            How can I achieve the same but on Linux platform using boost::process ? (prevent console window creation on the newly spawn child process)

            My use case is as followed:

            I'm trying to call a cross-platform GUI app built from .NET 5.0 AvaloniaUI (C#). And I'm calling that from another GUI app built from gtkmm (c++). It does create black console along with GUI window.

            This symptom doesn't occur when I tried calling the same mentioned Avalonia app with another cross-platform Avalonia app. It doesn't create any console, only the GUI window as intended. (Using System.Diagnostics.Process from .NET C#).

            So maybe there is some detail behind that make these api behave differently? (boost::process / System.Diagnostics.Process)

            Basically I'm looking for the api to do the same thing with System.Diagnostics.Process (C#) on c++



            Answered 2022-Mar-27 at 13:26

            On linux a new console isn't created anyways. So, the only thing you might want to do is prevent the child process from sharing the parent's, like so:

            Source https://stackoverflow.com/questions/71636592


            Program.cs(18, 44): [CS1061] 'AppBuilder' does not contain a definition for 'UsePlatformDetect' and no accessible extension method 'UsePlatformDetect'
            Asked 2022-Mar-25 at 11:09
              Program.cs(18, 44): [CS1061] 'AppBuilder' does not contain a definition for 'UsePlatformDetect' and no accessible extension method 'UsePlatformDetect' accepting a first argument of type 'AppBuilder' could be found (are you missing a using directive or an assembly reference?)


            Answered 2022-Mar-25 at 11:09

            The UsePlatformDetect extension has its definition in the Avalonia.Desktop assembly, so you have to add a reference to it in your .csproj

            Source https://stackoverflow.com/questions/71610786


            Display ImageSharp Image in Avalonia UI
            Asked 2022-Mar-22 at 06:04

            As the title says. It seems that Avalonia Bitmap requires file path, so the only solution that comes to my mind is saving image, and then displaying it. But it's not exactly what I want to do, I would want to directly display the image from memory.



            Answered 2022-Mar-22 at 06:04

            You can save the Image's data into a memory stream and pass it in to Avalonia's Bitmap.

            Source https://stackoverflow.com/questions/71423835


            How can we change the default shutdown mode of an Avalonia application
            Asked 2022-Mar-21 at 09:02

            Iam trying to build an cross platform desktop application using avalonia(.net 6). Actually Iam new to avalonia. I want to shutdown my application explicitly. The default shutdown mode OnLastWindowClose , I want to change it to OnExplicitShutdown. I got a hint that it want to configure in the Application Lifetime at App axaml.cs . But I don't know how to do it. Anyone please help me. Please give me a detailed description about each and every step to configure it.



            Answered 2022-Mar-21 at 09:02

            You can set it in Main() via StartWithClassicDesktopLifetime(T, string[], ShutdownMode) method.

            EG: In the "Avalonia Application" project template you can set it as follows in Program.cs:

            Source https://stackoverflow.com/questions/71256272


            Regular expression issues in .net 6 value converter
            Asked 2022-Mar-16 at 19:26

            I am trying to learn some .net6 and c# and I am struggling with regular expressions a lot. More specificaly with Avalonia in Windows if that is relevant. I am trying to do a small app with 2 textboxes. I write text on one and get the text "filtered" in the other one using a value converter. I would like to filter math expressions to try to solve them later on. Something simple, kind of a way of writing text math and getting results real time. I have been trying for several weeks to figure this regular expression on my own with no success whatsoever. I would like to replace in my string "_Expression{BLABLA}" for "BLABLA". For testing my expressions I have been checking in http://regexstorm.net/ and https://regex101.com/ and according to them my matches should be correct (unless I misunderstood the results). But the results in my little app are extremely odd to me and I finally decided to ask for help. Here is my code:



            Answered 2022-Mar-16 at 19:26

            There are some missing parts in your regular expression, for example it doesn't have the curly braces { and } escaped, since curly braces have a special meaning in a regular expression; they are used as quantifiers.

            Use the one below.
            For extracting the math expression between the curly braces, it uses a named capturing group with name mathExpression.

            Source https://stackoverflow.com/questions/71480922


            MacOS app notarization failed - The signature of the binary is invalid
            Asked 2022-Mar-01 at 07:01

            The app is developed by using Avalonia and .net core. I notarized the app and not get any errors. But I got the following error when check the result of the app notarization:



            Answered 2022-Jan-28 at 19:15

            If you create a DMG, you must notarize the .app first (just zip it, notarize and after staple the .app). Then notarize the dmg.

            Without those 2 steps I also got the same issue as yours.

            With this app you can verify the signature and notarisation : https://www.mothersruin.com/software/Apparency/

            Source https://stackoverflow.com/questions/70858004


            Is there any way to bubble events up to the MainWindow from a UserControl in AvaloniaUI?
            Asked 2022-Feb-17 at 09:49

            I'm trying to create an Avalonia App which uses several UserControl Views by binding the content in the MainWindow to a property Content in the MainWindowViewModel.(I believe this is standard for MVVM).

            I want to be able to handle user inputs such as tapping the screen, pressing buttons etc, while also letting those events to bubble up to the MainWindow so that all inputs from the user can be monitored. This would allow a generic handler which could be simply used update an inactivity timer.

            The furthest events seems to be within the same UserControl however I would like to handle the event from the MainWindow. This would mean that everytime a new UserControl is created, the inactivity timer would still function without major changes.

            Here is how I'm currently handling tap events on the UserControls:



            Answered 2022-Feb-16 at 16:35

            You need to actually register a RoutedEvent via RoutedEvent.Register like this:

            Source https://stackoverflow.com/questions/71145110


            AvaloniaUI - What is the proper way to inject ViewModels into Views using composition-root based DI system?
            Asked 2022-Feb-15 at 11:53

            I am new to Avalonia/ WPF, Xaml and desktop development in general so please forgive and clarify any related misunderstandings I demonstrate. I will continue to study available documentation but I am having a difficult time finding material which addresses the point I am getting stuck on.

            I am trying to implement a composition-root, constructor-injection based dependency-injection system in my Avalonia application, using the recommended MVVM pattern and associated Avalonia project template. I have some familiarity with the Microsoft.Extensions.DependencyInjection package so have been trying to work with this system.

            Between tutorials for WPF and Avalonia based on this DI framework as well as other frameworks, I have tried to piece together a working solution. I think I have things figured out conceptually as far as registering Services and ViewModels and setting up constructors for these classes appropriately such that the framework will inject dependencies into these classes on instantiation. However, where I am getting stuck is with how to implement constructor injection for View classes.

            I attempted to register both MainWindow and MainWindowViewModel as services:



            Answered 2022-Feb-15 at 11:53

            View models are associated with views via DataContext instead of constructor injection. Note that a singe view can be reusable (especially if you are dealing with virtualized lists).

            In general your DI should not know about most of the view part at all, it should be only concerned with ViewModel and lower layers.

            Instead of being created via DI views are usually located via view locator by other views that bind particular properties to ContentControl, e. g.

            Source https://stackoverflow.com/questions/71119254


            Why is c# creating a file before any file stream is created?
            Asked 2022-Feb-03 at 22:06

            I am creating an avaloniaUI project and in it I have a json config with a class that serializes and deserializes it on initialization and editing. If the file can't be found on initialization the class makes a new one with a list of default properties. This class is supposed to be the only part of the code that can do that.

            For some reason the config file, when it does not exist already, is created before the constructor call of the config serializer class. That lead my friends and I to think that the file was being created somewhere else in the project. That can't be the case though because I've used a control f tool to comb the entire project for references of any filestreams, create commands, or a reference to the config path and I found nothing else that's capable of generating a file other than the code that's supposed to create the config but never runs. So what happens is the file is created empty before the code that's supposed to handle generation is called thus skipping the proper generation code which leads to json loading an empty string when the file is deserialized and it creates null value exceptions.



            Answered 2022-Feb-03 at 20:25

            In my small tests tracing your code, it appears the problem lies in the SaveConfig() method. Walking through the code should reveal that the line of code… sw.Write(data); … is executing, however, nothing is actually written to the file. Adding a Flush statement for the StreamWriter should ensure that… sw.Write(data); … gets done. Adding the Flush() command to the writer appears to actually write the data to the file.

            Source https://stackoverflow.com/questions/70976333


            Is it possible to run a DOTNET Core WebAPI asynchronously in an AvaloniaUI Project?
            Asked 2022-Jan-21 at 11:58

            I'm working on a project where I'm creating an AvaloniaUI frontend which would be able to be managed remotely via a REST API. In order to solve this, I created an Avalonia application, then added an additional project to the solution using the 'ASP.NET Core API' template.

            I used the following question as a template for setup:

            Hosting ASP.NET Core API in a Windows Forms Application

            Here they have a similar use case, however with a winforms project rather than Avalonia.



            When the API project starts async, the server doesn't seem to be running as it refuses the connection. The only way I have been able to get it to respond to get requests has been to set the API project as the startup project (before I had made the changes to Program.cs).

            Any help at all will be appreciated, I'm relatively inexperienced when it comes to ASP.NET, so I apologise if this is a relatively simple issue.



            Answered 2022-Jan-21 at 11:58

            I have found the solution. Turns out that the server was successfully running, however due to the fact that I didn't have and SSL certificate, the server would not accept the connection except on the unsecured 5001 port.

            Source https://stackoverflow.com/questions/70799281

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install Avalonia

            The Avalonia Visual Studio Extension contains project and control templates that will help you get started, or you can use the .NET Core CLI. For a starter guide see our documentation. Avalonia is delivered via NuGet package manager. You can find the packages here: https://www.nuget.org/packages/Avalonia/.


            Documentation can be found at https://docs.avaloniaui.net. We also have a tutorial over there for newcomers.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link

            Explore Related Topics

            Reuse Pre-built Kits with Avalonia

            Consider Popular C# Libraries


            by microsoft


            by shadowsocks


            by PowerShell


            by dotnet


            by 2dust

            Try Top Libraries by AvaloniaUI


            by AvaloniaUIC#


            by AvaloniaUIC#


            by AvaloniaUIC#