Question

如何在控制台中以不同的格式显示日期？我需要制作一个可以以不同格式（dd / mm / yyyy，dd.mm.yyyy，dd.mmmm.yyyy）输出日期的类

 class FunctionWithDate
    {
    public int DifferentInDays(DateTime day1)
    {
        DateTime date2 = DateTime.Now; // текущая дата
        int ts = ((TimeSpan)(date2 - day1)).Days;
        /* Console.WriteLine(ts.Days);*/ // получаем разницу дней
        return ts;
    }

    public string GetdateByFormat(DateTime date, string format)
    {
        date = "dd/MM/yyyy";
        return format;
    }

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Введите месяц, день  год");
            int day = Int32.Parse(Console.ReadLine());
            int month = Int32.Parse(Console.ReadLine());
            int year = Int32.Parse(Console.ReadLine());

            FunctionWithDate functionWithDate = new FunctionWithDate();
            DateTime enteredDate = new DateTime(day, month, year);

            int differentBeetweenDate = functionWithDate.DifferentInDays(enteredDate);
            Console.WriteLine(enteredDate);
            Console.WriteLine(differentBeetweenDate);

            ////////////////////////////////////////////////////

            string getDateByFormat = functionWithDate.GetdateByFormat(enteredDate,"dd/mm/yyyy");
            Console.WriteLine(getDateByFormat);
            Console.ReadKey();
        }
    }
}

}

Answer 1

您可以在ToString()个对象上使用DateTime来指定格式-https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings

您将需要--

DateTime enteredDate = new DateTime(day, month, year);

Console.WriteLine(enteredDate.ToString("MMMM dd, yyyy"));
Console.WriteLine(enteredDate.ToString("dd MM yyyy"));

Answer 2

您可以在ToString对象上使用DateTime方法。

例如：DateTime.Now.ToString("dd.MM.yyyy")

Answer 3

这是一个以多种格式显示日期的示例

static void Main(string[] args)  
    {  
        // Get current DateTime. It can be any DateTime object in your code.  
        DateTime aDate = DateTime.Now;  

        // Format Datetime in different formats and display them  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
        Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy HH:mm:ss"));  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy HH:mm"));  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy hh:mm tt"));  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy H:mm"));  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy h:mm tt"));  
        Console.WriteLine(aDate.ToString("MM/dd/yyyy HH:mm:ss"));  
        Console.WriteLine(aDate.ToString("MMMM dd"));  
        Console.WriteLine(aDate.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss.fffffffK"));  
        Console.WriteLine(aDate.ToString("ddd, dd MMM yyy HH’:’mm’:’ss ‘GMT’"));  
        Console.WriteLine(aDate.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss"));  
        Console.WriteLine(aDate.ToString("HH:mm"));  
        Console.WriteLine(aDate.ToString("hh:mm tt"));  
        Console.WriteLine(aDate.ToString("H:mm"));  
        Console.WriteLine(aDate.ToString("h:mm tt"));  
        Console.WriteLine(aDate.ToString("HH:mm:ss"));  
        Console.WriteLine(aDate.ToString("yyyy MMMM"));  

        Console.ReadKey();  
    }

Answer 4

可能您需要修改GetDateByFormat()方法：

public string GetdateByFormat(DateTime date, string format)
{
    return date.ToString(format);
}

然后，您可以像下面这样调用此方法：

DateTime currentDate = DateTime.Now;
string dateAsString = GetDateByFormat(currentDate, "dd/MM/yyyy");
Console.WriteLine(dateAsString);

其中显示：10/12/2019

或类似的

DateTime currentDate = DateTime.Now;
string dateAsString = GetDateByFormat(currentDate, "MM yy, dd");
Console.WriteLine(dateAsString);

其中显示：12 19, 10

等

如何在控制台中以不同的格式显示日期？

4 个答案: