Hi François,
Greetings from Syncfusion.
Query: The euro symbol doesn't show
We have checked your query and we suspect that the problem occurs when we are providing the incorrect culture name in Localization/ CultureSwitcher file. While providing the correct name, the Euro symbol is shown correctly. Find the below sample and image for your reference.
Refer the StartUp.cs file and CultureSwitcher.razor file in the provided sample.
Please let us know if you have any concerns.
Regards,
Rahul