Conversion of Date to specific format

DateTime currentDate = DateTime.Now();
string date = currentDate.toString("yyyy/MM/dd"); // [2014/01/09]

DateTime.ParseExact(txtDt.Text, "yyyy/MM/dd", null).ToString()

txtBxFromDate.Text = "12/27/2013 12:00:00 AM";
DateTime dt = DateTime.ParseExact(txtBxFromDate.Text, "dd/MM/yyyy hh:mm:ss tt", null); 
txtboxOutput.Text = dt.Tostring("yyyy/MM/dd");

string sDate = "12/27/2013";

        string[] dat = sDate.Split('/');
        string d = dat[1];
        string m = dat[0];
        string y = dat[2];
        string startDate = y + '/' + m + '/' + d;