I am looking for a solution to get system date time format.
For example: if I get DateTime.Now? Which Date Time Format is this using? DD/MM/YYYY>
If it has not been changed elsewhere, this will get it:
string sysFormat = CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern;
If using a WinForms app, you may also look at the UICulture:
string sysUIFormat = CultureInfo.CurrentUICulture.DateTimeFormat.ShortDatePattern;
Note that DateTimeFormat is a read-write property, so it can be changed.