Regional Settings, especially dates, are always a problem in code. For example, suppose your product is developed in U.S. and deployed in UK. DateTime.Parse
would throw exceptions because String is not recognized as a valid DateTime). The quickest fix for this problem is to use the DateTimeFormatInfo object during the Parse
System.Globalization.DateTimeFormatInfo MyDateTimeFormatInfo = new System.Globalization.DateTimeFormatInfo();
MyDateTimeFormatInfo.ShortDatePattern = "M/d/yyyy";
string StartDate = DateTime.Parse(dt.ToString("MM/dd/yyyy",MyDateTimeFormatInfo);
The above code will work under all short-date settings.