常量定義問題、獲得兩個時間之間的周數等問題

一、常量定義問題
public static string IsScorePubSMSedSchoolID="*****"; 
public static string IsScorePubSMSedCity="***";
二、獲得兩個時間之間的周數
  public int DateDiffWeek(DateTime StartTime,DateTime EndTime){
   System.Globalization.CultureInfo myCI = new System.Globalization.CultureInfo("en-US");
   System.Globalization.Calendar myCal = myCI.Calendar;

   System.Globalization.CalendarWeekRule myCWR = myCI.DateTimeFormat.CalendarWeekRule;
   DayOfWeek myFirstDOW = myCI.DateTimeFormat.FirstDayOfWeek;
   int SWeeks=myCal.GetWeekOfYear(StartTime,myCWR,myFirstDOW);
   int EWeeks=myCal.GetWeekOfYear(EndTime,myCWR,myFirstDOW);
   return EWeeks-SWeeks;
  }