Content of button is not updated after changing the CurrentUICulture

Question

According to this tutorial, I try to implement the multilingual system to my WPF .NET Core 3.1 application. Everything works fine if I change the property Title of Window element directly, application reads from the corrent resource file, which is is defined by changing the CurrentUICulture.

Here is a code of such a change:

private void BtnChangeLanguageToCsCz_Click(object sender, RoutedEventArgs e)
{
    System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo("cs-CZ");
}

private void BtnChangeLanguageToEnUs_Click(object sender, RoutedEventArgs e)
{
    System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo("en-US");
}

However after I click any of these buttons, their content remains unupdated. I feel like I need to call some UI update function or anything like this but can't find anything related so far.

Here is how do I bind the Content property of the Button:

<Button x:Name="BtnInstall" Content="{x:Static p:Resource.ButtonInstall}" HorizontalAlignment="Center" Margin="0,324,0,0" VerticalAlignment="Top" Height="50" Width="200" Click="BtnInstall_Click"/>

Resource files have their modifiers set to public and here are the names:

What should I do to make it update itself?

Answer 1

A found a solution based on this tutorial, and rather than using the thread's culture or resource.resx files, it uses XAML resource dictionaries.

This can be changed for your case, however, I did this for my MainWindow.xaml:

• I created two resource dictionaries called 'MainWindow.en-GB.xaml' and 'MainWindow.cs-CZ.xaml', in a folder named /Resources.
• I then set the build action to Content and the Copy to Output Directory to Copy if newer.
• Once I created the resource dictionaries, I created an example resource called Text:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:sys="clr-namespace:System;assembly=mscorlib">
        <sys:String x:Key="Text">Hello</sys:String>
</ResourceDictionary>

• Then in my MainWindow.xaml, I added the following code:

<Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Resources/MainWindow.en-GB.xaml"></ResourceDictionary>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

• Followed by, setting the button's content to the resource Text:

<Button x:Name="BtnInstall" 
    Content="{DynamicResource ResourceKey=Text}" 
    HorizontalAlignment="Center" 
    Margin="0,324,0,0" 
    VerticalAlignment="Top" 
    Height="50" 
    Width="200" 
    Click="BtnInstall_Click" />

• Finally, by using the LocUtil from the linked tutorial, calling the LocUtil.SwitchLanguage method, I could change between the two:

private void BtnChangeLanguageToEnUs_Click(object sender, RoutedEventArgs e)
{
    LocUtil.SwitchLanguage(this, "en-US");
}