比较以dd/mm/yyyy formate表示的两个日期时间 [英] compare two date time in dd/mm/yyyy formate

问题描述

我有两个日期，分别是dd/mm/yyyy或dd/MM/yyyy.我想比较两个日期，但是当我使用convert.todatetime()时，它没有给我适当的解决方案.
没有人对此比较有任何了解.

请尽快答复

I have two dates in format of dd/mm/yyyy or dd/MM/yyyy. I want to compare both date but when I am using convert.todatetime(), its not giving me proper solution.
There is any one have any idea about this comparisions.

Please reply soon

推荐答案

一个简单的DateTime.Compare(date1，date2)应该可以工作.

http://msdn.microsoft.com/en-us/library/system.datetime. compare.aspx [^ ]

A simple DateTime.Compare(date1,date2) should work.

http://msdn.microsoft.com/en-us/library/system.datetime.compare.aspx[^]

如果使用自定义日期时间格式，则必须使用DateTime.TryParseExact.

首先，

You have to use DateTime.TryParseExact if you are using custom date time format.

First,

using System.Globalization;

DateTimeFormatInfo dateFormat = new DateTimeFormatInfo();
dateFormat.DateSeparator = "/";

string input1 = "18/10/2012";
string input2 = "17/10/2012";

DateTime date1 = DateTime.MinValue;
DateTime date2 = DateTime.MinValue;

if (DateTime.TryParseExact(input1, "dd/MM/yyyy", dateFormat, DateTimeStyles.AllowWhiteSpaces, out date1))
{
    // Date 1 is a valid date
}
else
{
    throw new Exception("Input 1 is not a valid recognised date");
}

if (DateTime.TryParseExact(input2, "dd/MM/yyyy", dateFormat, DateTimeStyles.AllowWhiteSpaces, out date2))
{
    // Date 2 is a valid date
}
else
{
    throw new Exception("Input 2 is not a valid recognised date");
}

if (date1 > date2)
{
    // Do something
}
else
{
    // Do something
}

        string strFromDate = "26/03/2012";
        string strToDate = "26/04/2012";
 
        DateTime FromDate = DateTime.ParseExact(strFromDate, "dd/MM/yyyy",null);
        DateTime ToDate = DateTime.ParseExact(strToDate, "dd/MM/yyyy", null);
 
        int result = DateTime.Compare(FromDate, ToDate);
 
        if (result < 0)
        {
            //from date is less than to date
            
        }

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