How do I compare time

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C#

DateTime Now = DateTime.Now;
            TimeSpan TS = Now.TimeOfDay;
            String Time1 = Now.ToShortTimeString();
            String Time2 = Now.ToLongTimeString();

            if (timeFrom.CompareTo(timeTo) > 0)
            {
                returnMessage2 += "Time From is bigger than Time To <br />";
            }

Posted 3-Feb-14 0:10am

Member 10548723

Updated 3-Feb-14 1:10am

Karthik_Mahalingam

v3

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4 solutions

Solution 2

Just compare the time of day:

C#

DateTime now = DateTime.Now;
DateTime from = new DateTime(2014, 2, 3, 8, 31, 0);
if (now.TimeOfDay > from.TimeOfDay)
    {
    Console.WriteLine("After FROM time");
    }

Posted 3-Feb-14 0:18am

OriginalGriff

Solution 4

C#

DateTime FromDate = DateTime.Now.AddDays(-1); //2/2/2014 5:41:50 PM
       DateTime ToDate = DateTime.Now.AddDays(2);    //{2/5/2014 5:41:50 PM}
      int value=    DateTime.Compare(ToDate ,FromDate); // 1 means To date is greater
                                                        // -1 lesser
                                                        // 0  equal

Posted 3-Feb-14 1:14am

Karthik_Mahalingam

Solution 3

To compare different dates, don't use their string representations, just compare them directly:

C#

DateTime now = DateTime.Now;
DateTime tomorrowSameTime = now + TimeSpan.FromDays(1);

if(tomorrowSameTime > now)
{
    // That's the desired behaviour.
}
else if(tomorrowSameTime < now)
{
    // Something's wrong with the spacetime as we know it.
}
else
{
    // Identical times intentionally ignored.
}

Posted 3-Feb-14 0:22am

lukeer

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Sandeep Singh Shekhawat · Accepted Answer · 2014-02-03T00:16:00

Solution 1

You are almost right..just change variable name in condition

C#

string returnMessage2 = string.Empty;
            DateTime Now = DateTime.Now;
            TimeSpan TS = Now.TimeOfDay;
            String Time1 = Now.ToLongTimeString();
            String Time2 = Now.ToLongTimeString();
 
            if (Time1.CompareTo(Time2) >= 0)
            {
                returnMessage2 += "Time From is more than Time To, please re-select";
            }

Posted 3-Feb-14 0:16am

Sandeep Singh Shekhawat

Updated 3-Feb-14 1:06am

v5

Comments

lukeer 3-Feb-14 6:25am

Why convert to string in the first place when comparing DateTimes works perfectly fine?

Sandeep Singh Shekhawat 3-Feb-14 7:21am

because op using string..

Richard MacCutchan 3-Feb-14 6:32am

It is really bad practice to convert numeric types to strings in order to compare them. And in your sample you are using DateTime.Now for both values, so it is obvious they will be the same.

Sandeep Singh Shekhawat 3-Feb-14 7:20am

Thanks @Richard-MacCutchan

Member 10548723 3-Feb-14 7:02am

I declare my variables as string, so i need to convert. Can you compare time in string?

Sandeep Singh Shekhawat 3-Feb-14 7:06am

check my rollback solution..