How to use DateDiff calculation around textboxes? Need some help to check code.

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Hello CodeProject,

I`m migrating access database to vb.net.
I have employee database with a few DateTimePickers, textboxes, and comboboxes.
In access I have formulas in textbox's control source like this, and it works:

txtDayCalculation
=DateDiff("d",txtDateofHire, txtManualDate)
txtYear
=Int(txtDayCalculation/365)
txtMonth
=Int((txtDayCalculation-(txtYear*365))/30) 
txtDay
=((txtDayCalculation-txtYear*365))-(txtMonth*30)

So, I have trying to do also in vb.net, but NOT successful.
Maybe my approach to write a code is wrong.

Anyway, I have code like this:

me.txtDayCalculation.text = DateDiff("d",txtDateOfHireDateTimePicker, txtManualDateDateTimePicker)

Please someone to check code, and give me corrections.
Thank you in advance for help to anyone

Posted 14-Jan-11 0:59am

DejanDejanovic

Updated 15-Jan-11 2:08am

Dalek Dave

v3

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Dalek Dave 15-Jan-11 8:08am

Edited for Spelling and Readability.

4 solutions

Solution 1

read this article at the bottom is a great example showing what your after

MSDN : datediff function[^]

Posted 14-Jan-11 1:24am

Simon_Whale

Comments

Dalek Dave 15-Jan-11 8:08am

Good Link

Solution 2

Try using the TimeSpan[^] object.

Posted 14-Jan-11 1:25am

Abhinav S

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Dalek Dave 15-Jan-11 8:08am

Sage Advice

Solution 4

Thank you to all for tips, help, and so quick replies.

I have found this. Just have add Value.Date

DateDiff(DateInterval.Day,DateTimePicker1.Value.Date, DateTimePicker2.Value.Date)

Posted 15-Jan-11 0:55am

DejanDejanovic

Comments

Dalek Dave 15-Jan-11 8:09am

That'll do!

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*dan!sh* · Accepted Answer · 2011-01-14T01:31:00

Solution 3

If you need to get the number of days between the two days, you can simply use this:

int daysDifference = (datePicker1.Value - datePicker2.Value).Days;

This will give the whole number for days. If you need excat number, use TotalDays instead of Days.

Posted 14-Jan-11 1:31am

dan!sh

Comments

Dalek Dave 15-Jan-11 8:09am

Fair emough answer.