How to calculate date difference in C# ?

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Hi,
I am developing a online business directory using asp.net with c# and Sql server as database.

There are two column one column for shop opening time and another column for shop closing time.

I would like to do programming to show whether the shop is the open or close as per current time. for getting current
date time I am using System.DateTime.Now.ToString()
Please help me.

What I have tried:

Quote:
System.DateTime.Now.ToString()

Posted 22-May-20 20:54pm

Member 14201433

Updated 22-May-20 21:31pm

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Richard MacCutchan · Accepted Answer · 2020-05-22T21:32:00

Solution 1

Why are you converting the time to a string? You just need the actual time values so you can compare them.

C#

DateTime openTime;
DateTime closeTime;
Bool shopOpen;
DateTime now = System.DateTime.Now;
if (now >= openTime && now < closeTime)
{
    shopOpen = true;
}
else
{
    shopOpen = false;
}

Posted 22-May-20 21:32pm

Richard MacCutchan

Comments

[no name] 23-May-20 9:30am

For this I prefer the short version: shopOpen= now >= openTime && now < closeTime;
Anyway a 5

Richard MacCutchan 23-May-20 9:57am

Yes, so do I. However, most people who post here are not very experienced (this person is obviously a novice), so it is better to post the longer form which makes the sense clearer. And most modern compilers will optimise it to the form you suggest.