C#如何实现按月循环

C#怎么实现按月循环
比如：2000-7到2005-5按月循环，日期默认从1号开始
请问怎样用C#实现，谢谢！

[解决办法]
用AddMonths(1)递增到new DateTime(2005,5,1)时结束
[解决办法]
DateTime _BeginDate =DateTime.Parse("2006-07-01");
DateTime _EndDate = DateTime.Parse("2005-05-01");

DateTime _Date =_BeginDate;
while (true)
{
MessageBox.Show(_Date.ToString("yyyy-MM"));
_Date = _Date.AddMonths(1);

if (_Date.Year >= _EndDate.Year && _Date.Month > _EndDate.Month) break;
}
[解决办法]
AddDays -> AddMonth

C# code

            DateTime dateStart = new DateTime(2000, 01, 01);            DateTime dateEnd = dateStart;            do            {                dateEnd = dateEnd.AddMonths(1);            } while (dateEnd.Year <= 2005 && dateEnd.Month <= 05);
[解决办法]
C# code
 int year1 = Convert.ToDateTime(startdate).Year;            int year2 = Convert.ToDateTime(enddate).Year;            int month1 = Convert.ToDateTime(startdate).Month;            int month2 = Convert.ToDateTime(enddate).Month;            //计算总月份            int month = (year2 - year1) * 12 + (month2 - month1);
[解决办法]
 public static int GetYearWeekCount(int strYear)
       {
           string returnStr = "";

           System.DateTime fDt = DateTime.Parse(strYear.ToString() + "-01-01");
           int k = Convert.ToInt32(fDt.DayOfWeek);
           if (k == 1)
           {
               int countDay = fDt.AddYears(1).AddDays(-1).DayOfYear;
               int countWeek = countDay / 7 + 1;
               return countWeek;
           }
           else
           {
               int countDay = fDt.AddYears(1).AddDays(-1).DayOfYear;
               int countWeek = countDay / 7 + 2;
               return countWeek;
           }
       }
循环添加月份