在c＃中将整数转换为datetime [英] convert integer to datetime in c#

问题描述

              Console.WriteLine("please enter start date");
          List <int>  start = new List  <int>();

               for (int i = 0; i <= 4; i++)
               {
                       start.Add(i);
                    Console.ReadLine();      }


   List <int>  end = new List  <int>();

               for (int i = 0; i <= 4; i++)
               {
                       end.Add(i);
                    Console.ReadLine();      }

// how to do that  in the run time start result was "01.01.1990 " ,"01.01.1999" and end result was  "02.01.1990","09.10.2013"

推荐答案

Console.WriteLine("please enter start date");

string sStartdate = string.Empty;
//Input date
sStartdate = Console.ReadLine();

DateTime dStartDate;
//Parse the input to date time
DateTime.TryParse(sStartdate, out dStartDate);

//Display it
Console.Write(dStartDate);

//Wait for enter key hit (to hang the console window for a input)
Console.ReadLine();

// for miltiple entry使用此解决方案------ ---------------------------------------------



列表< datetime> dtArray = new List< datetime>（）;



while（true）

{

Console.WriteLine （输入日期）;

string sStartdate = string.Empty;

sStartdate = Console.ReadLine（）;



DateTime dStartDate;

if（DateTime.TryParse（sStartdate，out dStartDate））

{

dtArray.Add（dStartDate） ;

}



string sAns =Y;

Console.WriteLine（想要进入下一个（是/否）？）;



do

{

sAns = Console.ReadLine（） ;



if（sAns.ToUpper（）！=Y&& sAns.ToUpper（）！=N）

Console.WriteLine（无效输入，有效输入是Y / N？）;

} while（sAns.ToUpper（）！=Y&& sAns.ToUpper（） ！=N）;



if（sAns.ToUpper（）==N）

{

休息;

} < br $>
}



foreach（dtArray中的var项目）

{

控制台。 WriteLine（item）;

}



Console.ReadLine（）;

// for miltiple entry use this solution ---------------------------------------------------

List<datetime> dtArray = new List<datetime>();

while (true)
{
Console.WriteLine("Enter date");
string sStartdate = string.Empty;
sStartdate = Console.ReadLine();

DateTime dStartDate;
if (DateTime.TryParse(sStartdate, out dStartDate))
{
dtArray.Add(dStartDate);
}

string sAns = "Y";
Console.WriteLine("Want to enter next (Y/N)?");

do
{
sAns = Console.ReadLine();

if (sAns.ToUpper() != "Y" && sAns.ToUpper() != "N")
Console.WriteLine("Invalid Input, Valid inputs are Y/N?");
} while (sAns.ToUpper() != "Y" && sAns.ToUpper() != "N");

if (sAns.ToUpper() == "N")
{
break;
}
}

foreach (var item in dtArray)
{
Console.WriteLine(item);
}

Console.ReadLine();

尝试采取字符串中的输入（使用Console.ReadLine）然后将其放入数组或列表中或直接转换为datetime（DateTime.TryParse）。

Try to take the input in a string (with Console.ReadLine) and then put it into array or list or direct convert to datetime (DateTime.TryParse).

试试这个

try this one

int hour = 23;
var today = DateTime.Today;
var time = new DateTime(today.Year, today.Month, today.Day, hour, 0, 0);

var time = DateTime.Today + TimeSpan.FromHours(hour);

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