how to change date and time values in vb.net?(increase & decrease)

Question

0.00/5 (No votes)

See more:

in vb.net how is to change date and time values i mean like this:
for example: today is: date1 = system.datetime.today,.....

if x=1 then
date1 += 1(?this is the part i want to know?)
date2 plus 4 hours
date3 plus 2 days and 12 hours
date4 minus 1 day and 2 hours
end if

or it doesn't work like this and i should work with timers to tick in specified time?
as a matter of fact i'm using this in a connection to MS access database, and i want to change the times in fields to a specific time.
i'm using vb.net 2005 .net 2

Posted 1-Jan-13 16:54pm

Reza Allahyarzadeh

Add a Solution

2 solutions

Solution 1

Do you have any sort of books ? Does google work where you live ? How did you learn VB ? Do you know what intellisense is ?

Create a date time. Let's call it date. Now type date followed by a . and the IDE will show you all the methods you have available for that class. There's an AddDays, AddHours, etc. You can give it negative numbers.

Posted 1-Jan-13 17:10pm

Christian Graus

Comments

Reza Allahyarzadeh 2-Jan-13 1:30am

could you exactly tell me what is the purpose of this damn site? to ask and to be answered.if you don't like it you are not supposed to answer it.THAT'S IT.
ok now don't play smart here, I'm busy with my program now, i checked many sources but couldn't find what I want,i'm in a little bit of hurry and wanted a quick answer which is the name of this place. so I asked here.
I'm so sorry you GOD OF PROGRAMMING I bothered thee!!!!

Christian Graus 2-Jan-13 1:49am

This site is here to help people. The best help I can give you, is to tell you that if you can't work out these basics, and you're 'in a hurry', that is a bit of an outrage. Who in their right mind would be waiting on work from someone who has no clue what they are doing ? You should learn to program, before being paid to do so.

And I did in fact give you the correct answer.

Reza Allahyarzadeh 20-Feb-13 23:46pm

I'm not a computer engineer or a programmer,I'm an electronic engineer and i'm writing a GUI to connect to serial ports, i don't intend to waste my precious time in completely learning sth that i won't use in future. i'm damn busy with my vhdl programming and board designing.
and there is no people paying me or waiting for my program , and i'm the boss around here.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Aarti Meswania · Accepted Answer · 2013-01-01T18:06:00

Solution 2

this way...

VB

Dim today As System.DateTime

today = System.DateTime.Now

Dim answer1 = today.AddDays(1)  'date1 += 1
Dim answer2 = today.AddHours(4) 'date2 plus 4 hours
Dim answer3 = today.AddDays(2).AddHours(12) 'date3 plus 2 days and 12 hours
Dim answer4 = today.AddDays(-1).AddHours(-4) 'date4 minus 1 day and 2 hours

Happy Coding!
:)

Posted 1-Jan-13 18:06pm

Aarti Meswania

Comments

Reza Allahyarzadeh 2-Jan-13 1:34am

thank you very much you helped me a lot :)

Aarti Meswania 2-Jan-13 1:35am

welcome dear! :)
Glad to help you! :)