Hi Vehlf,
Thanks for your interest in Syncfusion Products.
You can solve this by setting the Culture at the application level. This can be done by the below code on Form1_load method.
Application.CurrentCulture = new System.Globalization.CultureInfo("es-ES");
Here is a sample for your reference.
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=DateFormat-1625427466.zipRegards,
Arulraj.A