This project provides a simple, yet powerful and feature-rich way to localize a WPF application. It is focused on simplicity and easy-of-use and is an alternative to the WPF localization method provided by Microsoft.

The project is a replacement (a complete rewrite and redesign) of an earlier localization solution posted on CodeProject in 2009 - Advanced WPF Localization.

Please refer to the Wiki for complete feature list and examples. This section describes basic usage only.

1. Install the WpfLocaliation package from NuGet
2. Use the Loc markup extension in your application

<Window ...>
  ...
  <TextBlock Text="{Loc Text_HelloWorld}"/>
  ...
  <!-- Localize bindings -->
  <TextBlock Text="{Loc Text_HelloUserName, Binding={Binding UserName}}"/>
  ...
  <!-- Localize multi-bindings -->
  <TextBlock>
    <TextBlock.Text>
      <Loc Key="Text_HelloPersonalName">
        <Binding Path="FirstName"/>
        <Binding Path="LastName"/>
      </Loc>
    </TextBlock.Text>
  </TextBlock>
  ...
  <!-- Localize date/time, number and currency formatting even if there is no localized resource -->
  <TextBlock Text="{Loc StringFormat='{}{0:d}', Binding={Binding BirthDate}}"/>
  ...
  <!-- Localize date/time, number and currency formatting inside localized text -->
  <TextBlock Text="{Loc Text_BirthDate, Binding={Binding BirthDate}}"/>
  ...
</Window>

3. Add localized values to the default resource file created by Visual Studio (go to Solution Explorer - Project -> Properties -> Resources or open Properties/Resources.resx (C#), My Project/Resources.resx (VB.NET))

4. Add culture-specific resource files (e.g. Resources.de.resx, Resources.fr-FR.resx) and localize the values

Resources.de.resx

Resources.fr-FR.resx

Please refer to the Wiki for a complete feature list and examples.

• Supports both dependency and non-dependency properties
• Changing the culture at runtime automatically updates all localized properties
  • Design-time preview of different languages
• Supports text, images and any data type for which there is a TypeConverter (including fonts, colors, enumerations, margins, etc.)
• Bindings
• Templates
• Styles (including setters)
• User controls
• Custom controls (both in themes and in code-behind)
• Code-behind
• Multiple resource files located in any assembly
• Mix multiple languages inside the same control, window or different windows
• Multiple UI threads
• High-performance (important for applications that utilize data grids or other demanding data controls)
• Supports WPF designer in Visual Studio 2013/2015/2017 including previewing different languages at design time

Wiki

C# - WpfLocalization.Demo
VB.NET - WpfLocalization.VBDemo

Public Domain - Unlicense

Note: Even though the project is public domain I would appreciate if you let me know in case you use the library in an open source or a commercial project. I would also appreciate any suggestions and bug reports.

https://www.nuget.org/packages/WpfLocalization