如何從年初獲取日期

Question

如何在C＃中從day of year獲得date？

我有這樣的代碼：

int a = 53; // This is the day of year value, that I got previously 
string b = Convert.ToDateTime(a).ToString(); // Trying to get the date 

我需要得到的價值22.2.2014。但這不起作用，我該怎麼辦？提前致謝。

Answer 1

int a = 53; 
int year = DateTime.Now.Year; //Or any year you want 
DateTime theDate = new DateTime(year, 1, 1).AddDays(a - 1); 
string b = theDate.ToString("d.M.yyyy"); // The date in requested format 

Answer 2

int a = 53; 
var dt = new DateTime(DateTime.Now.Year, 1, 1).AddDays(a - 1); 
string b = dt.ToString(); 

Answer 3

假設您想當年？

int a = 53; 
DateTime date = new DateTime(DateTime.Now.Year, 1,1).AddDays(a -1); 

Answer 4

使用

DateTime.AddDays() 

初始化的日期開始的一年，那麼就使用此功能

http://msdn.microsoft.com/en-us/library/system.datetime.adddays(v=vs.110).aspx