C＃Prinitng在控制台中修改了日期范围

Question

I need to accept input paramteters and print date range in console like in the example:

input: "01.01.2017 05.01.2017"

output: "01 - 05.01.2017"

So as you see dates must be separated with dots and printed with dash between them. What is more, if start and end date both has the same month and year, these are printed only once.

Does anyone can suggest good way to achieve this?

Answer 1

Just format date as you need and add aditional check for cases.

        DateTime date1 = new DateTime();
        DateTime date2 = new DateTime();

//while not valid input dates format...
        bool valid = false;
        while (!valid)
        {
            Console.WriteLine("Enter start date:");
            string dateEntered1 = Console.ReadLine();
            Console.WriteLine("Enter end date:");
            string dateEntered2 = Console.ReadLine();

             bool isvalidDate1 = DateTime.TryParse(dateEntered1,out date1);
            bool isvalidDate2 = DateTime.TryParse(dateEntered2,out date2);
//check if date parsing was sucess
            if(isvalidDate1 && isvalidDate2)
            {
                valid = true;
            }
            else
            {
                Console.WriteLine("Dates entered is in incorrect format!");

            }
        }
        string period = "";
        if (date1.Month == date2.Month && date1.Year == date2.Year)
        {
            period = string.Format("{0} - {1}", date1.ToString("dd."), date2.ToString("dd.MM.yyyy"));
        }
        else
        {
            period = string.Format("{0} - {1}", date1.ToString("dd.MM.yyyy"), date2.ToString("dd.MM.yyyy"));
        }
        Console.Write(period);
        Console.Read();