Display Resource files content in HTML SPAN in ASP.Net

Attached code:

protected override void InitializeCulture()
{
    string language = "de";
    base.InitializeCulture();
    Thread.CurrentThread.CurrentCulture = new CultureInfo(language);
    Thread.CurrentThread.CurrentUICulture = new CultureInfo(language);
}

I am following your article :

https://www.aspsnippets.com/Articles/What-is-Globalization-and-Localization-and-their-differences-in-ASPNet.aspx

One line of code is working while other not working, I have created a BasePage.cs class and inherited in my webforms as well.

Please provide the solution.