如何以編程方式在C＃中構建ISO Week Number DataTable？

Question

任何人都知道如何構建DataTable的一週？

我聽說有很多類型的計算，格里高利或其他... 我的需求是ISO周沒有和綁定到數據表取決於第一週。

DataTable中有2列：ISOWeekNo和WeekName

在C＃

ISOWeekNo WeekName 
1   01 Jan 2012 To 07 Jan 2012 
2   08 Jan 2012 To 14 Jan 2012 

如何建立編程基於ISO周沒有？

Answer 1

// Set up DataTable 
var dt = new DataTable(); 
var col1 = new DataColumn("ISOWeekNo", typeof(int)); 
var col2 = new DataColumn("WeekName", typeof(string)); 
dt.Columns.AddRange(new[] { col1, col2 }); 
dt.PrimaryKey = new[] { col1 }; 

// Start with the first day of this year and check each day until next year. 
var day = new DateTime(DateTime.Now.Year, 1, 1); 
while (day.Year == DateTime.Now.Year) 
{ 
    var weekNum = DateTimeFormatInfo.InvariantInfo.Calendar.GetWeekOfYear(day, CalendarWeekRule.FirstFullWeek, DayOfWeek.Monday); 
    if (!dt.Rows.Contains(weekNum)) 
     dt.Rows.Add(weekNum, string.Format("{0} to {1}", day.ToString("dd' 'MMM' 'yyyy"), day.AddDays(6).ToString("dd' 'MMM' 'yyyy"))); 
    day = day.AddDays(1); 
}