change date from "22-12-2012" to "12-22-2012"

hi,
I think this is duplicate quesion

http://www.c-sharpcorner.com/Forums/Thread/200801/change-date-from-22-12-2012-to-12-22-2012.aspx

If you have your input in particular format string (not in standard DateTime Format), then you could convert it like this: 

string originalDate = "22-12-2012";

string[] dateParts = originalDate.Split('-');

string convertedDate = dateParts[1] + "-" + dateParts[0] + "-" + dateParts[2];

Console.WriteLine(convertedDate);