OneCore.Net.AVL.MessageBoxes 1.0.1

OneCore.Net.AVL.MessageBoxes Library

Overview

OneCore.Net.AVL.MessageBoxes provides a ready-to-use, theme-aware MessageBox implementation for Avalonia UI applications.
It mimics the simplicity of WPF�s MessageBox API while embracing Avalonia�s modern styling, templating, and theming system.

Features

• Drop-in replacement for WPF MessageBox � same API, async/await compatible.
• Light & Dark theme support with automatic resource switching.
• Customizable ControlTheme for full visual control via axaml.
• Themed Buttons with hover/pressed states and clean flat design.
• Keyboard support � Enter triggers the default button, Escape triggers cancel.
• Separation of content and footer for flexible layout and consistent styling.
• Fully self-contained library � no external dependencies beyond Avalonia.
• Extensible design � create custom button sets or override color resources.
• Cross-platform ready � works out of the box on Windows, Linux, and macOS.
• Built-in localization key support � button texts (OK, Yes, No, Cancel) can be overridden by the host app through ResourceDictionary keys.

Getting Started

1. Installation:

   • Install the OneCore.Net.AVL.MessageBoxes library via NuGet Package Manager:

   dotnet add package OneCore.Net.AVL.MessageBoxes
   

2. Namespace Import

   • Add the namespace to your code:

   using OneCore.Net.AVL.MessageBoxes;
   

3. Show your first MessageBox

   await MessageBox.Show("Hello from Avalonia!", "Demo");
   

4. Use different buttons

   var result = await MessageBox.Show(
       "Do you want to save changes?",
       "Confirm",
       MessageBoxButtons.YesNoCancel
   );
   
   if (result == MessageBoxResult.Yes)
       SaveChanges();
   

5. Apply theme resources

   • Ensure your application merges the Styles.axaml of the library:

   <Application.Styles>
       <StyleInclude Source="avares://OneCore.Net.AVL.MessageBoxes/Themes/Styles.axaml" />
   </Application.Styles>
   

6. Customize appearance

   • Override any color key (e.g. MessageBoxFooterBackground, MessageBoxButtonHoverBackground) in your app theme to match your own design.

7. Localize button text (optional)

   • By default, the library uses English button labels (OK, Cancel, Yes, No).
     To localize them, override these resource keys in your application's resources:

   <Application.Resources>
       <ResourceDictionary>
           <x:String x:Key="MessageBox_OK">OK</x:String>
           <x:String x:Key="MessageBox_Cancel">Abbrechen</x:String>
           <x:String x:Key="MessageBox_Yes">Ja</x:String>
           <x:String x:Key="MessageBox_No">Nein</x:String>
       </ResourceDictionary>
   </Application.Resources>
   

   Avalonia will automatically apply your translations.

Links

• NuGet
• GitHub

License

Copyright (c) David Wendland. All rights reserved. Licensed under the MIT License. See LICENSE file in the project root for full license information.