Steps to reproduce the issue:
1 - Go to the AjaxControlToolkit demo page:
http://ajaxcontroltoolkit.devexpress.com/MaskedEdit/MaskedEdit.aspx
2 - Configure your web browser to have "French" (fr-FR) as your preferred language and refresh the page to set the page culture setting to "français (France)"
3 - Click the calendar button next to the "Enter Date" input field (the calendar should be displayed in French) and select a date with a day number greater than 12 (ex: 27/05/2015)
The year in the "Enter Date" input field is displayed with two digits instead of four.
4 - Click inside the "Enter Date" input field to set focus and then click outside the "Enter Date" input field to remove focus.
The date is marked as invalid.
It seems that the culture setting of the MaskedEdit extender is not the same as the page.
1 - Go to the AjaxControlToolkit demo page:
http://ajaxcontroltoolkit.devexpress.com/MaskedEdit/MaskedEdit.aspx
2 - Configure your web browser to have "French" (fr-FR) as your preferred language and refresh the page to set the page culture setting to "français (France)"
3 - Click the calendar button next to the "Enter Date" input field (the calendar should be displayed in French) and select a date with a day number greater than 12 (ex: 27/05/2015)
The year in the "Enter Date" input field is displayed with two digits instead of four.
4 - Click inside the "Enter Date" input field to set focus and then click outside the "Enter Date" input field to remove focus.
The date is marked as invalid.
It seems that the culture setting of the MaskedEdit extender is not the same as the page.