爲了讓週一至週六當月

Question

在一個月內，我想知道星期一至sataurdays當月例如：在十月月2011有

3-oct-2011 to 8-oct-2011, 
10-OCt-11 to 15-Oct-11, 
17-Oct-11 to 22-oct-2011, 
24-Oct-2011 to 29-Oct-2011 

所有這些所有的這些日子天的序列像3-oct-2011,4-oct-2011 .... 29-oct-11等需要獲取數組格式或數據表。

Answer 1

var today = DateTime.Today; 
var daysInMonth = DateTime.DaysInMonth(today.Year, today.Month); 

var dates = Enumerable.Range(1, daysInMonth) 
          .Select(n => new DateTime(today.Year, today.Month, n)) 
          .Where(date => date.DayOfWeek != DayOfWeek.Sunday) 
          .ToArray(); 

這將看天當月的數量，爲每一個DateTime對象，然後只返回那些不是星期日作爲數組日期。

var today = DateTime.Today; 
var daysInMonth = DateTime.DaysInMonth(today.Year, today.Month); 

var dates = Enumerable.Range(1, daysInMonth) 
          .Select(n => new DateTime(today.Year, today.Month, n)) 
          .Where(date => date.DayOfWeek != DayOfWeek.Sunday) 
          .SkipWhile(date => date.DayOfWeek != DayOfWeek.Monday) 
          .TakeWhile(date => date.DayOfWeek != DayOfWeek.Monday || (date.DayOfWeek == DayOfWeek.Monday && daysInMonth - date.Day > 7)) 
          .ToArray(); 

這樣做也是一樣，除非擺脫週一到週六不在本月的範圍。 （一週在前一個月開始，或在下一個月結束）。

編輯：

這裏是一個.NET 2溶液，將做同樣的事情，我以前發佈的LINQ解決方案。

 DateTime today = DateTime.Today; 
     int daysInMonth = DateTime.DaysInMonth(today.Year, today.Month); 

     List<DateTime> dates = new List<DateTime>(); 

     bool foundFirst = false; 

     for (int n = 1; n <= daysInMonth; n++) 
     { 
      var date = new DateTime(today.Year, today.Month, n); 

      // Skip untill we find the first Monday of the month. 
      if (date.DayOfWeek != DayOfWeek.Monday && !foundFirst) 
       continue; 

      foundFirst = true; 

      // Add all days except Sundays. 
      if (date.DayOfWeek != DayOfWeek.Sunday) 
       dates.Add(date); 

      int remainingDays = daysInMonth - n; 

      // Verify that there are enough days left in this month to add all days upto the next Saturday. 
      if (date.DayOfWeek == DayOfWeek.Saturday && remainingDays < 7) 
       break; 
     } 

     DateTime[] dateArray = dates.ToArray(); 

Answer 2

最容易：

 int month = DateTime.Now.Month; 
     int year = DateTime.Now.Year; 
     int days= DateTime.DaysInMonth(year, month); 
     int totalSaturdays = 0; 
     for(int i=1;i<=days;i++) 
     { 
      var day = new DateTime(year, month, i); 
      if(day.DayOfWeek==DayOfWeek.Saturday) 
      { 
       totalSaturdays++; 
      } 
     } 
     Console.WriteLine(("Total Saturdays ="+totalSaturdays.ToString())); 
     Console.ReadLine();