How to validate start time and end time in dropdownlist?

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I have two dropdownlist ddlStartTime and ddlEndTime. In both dropdownlists time is filled with 5 minute intervals e.g. 12:00 AM, 12:05 AM, 12:10 AM upto 11.55 PM.
I want to implement server side validation so that endtime can't be less than starttime. How to do this?

Posted 22-Jul-15 1:00am

xpertzgurtej

Updated 22-Jul-15 1:01am

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OriginalGriff · Accepted Answer · 2015-07-22T01:19:00

Solution 1

Use DateTime.ParseExact:

C#

DateTime dtStart = DateTime.ParseExact("12:00 AM", "hh:mm tt", CultureInfo.InvariantCulture);
DateTime dtEnd = DateTime.ParseExact("10:00 PM", "hh:mm tt", CultureInfo.InvariantCulture);

Replace the constant times with your drop down values, and you can compare the two DateTime values directly.

Posted 22-Jul-15 1:19am

OriginalGriff

Comments

Thanks7872 22-Jul-15 7:50am

..using this may be : https://msdn.microsoft.com/en-us/library/system.datetime.compare(v=vs.110).aspx

xpertzgurtej 22-Jul-15 7:50am

Thanks OriginalGriff for your help..it solved my problem.

OriginalGriff 22-Jul-15 7:58am

You're welcome!