DB/Reporting :: Adding Minutes / Hours To Time

Sep 7, 2008

In Microsoft Access I use: Hours(time) minute(time) function to get current time hour and minute. I then use loop to add to the minutes until it ends in a 5 or 0 to round it up to the next 5 minutes. e.g. 13:43 rounded up to 13:45 I use IF statement to make sure the minute does not exceed 60 to start the hour. I want to use that time to add hours or minutes to easier e.g. add 15minutes, add 1 hour ect.



Adding Hours And Minutes From Text Boxes?

May 19, 2009

I am building a very basic calculator which adds and subtracts various numbers from various text boxes when I click on the 'button'. This works fine with:

TextBox3.Text = TextBox2.Text + (TextBox1.Text * 1000)

etc but when it comes to adding or subtracting time I get completely lost.Say I want to add 50 minutes in one text box to 12 minutes in another to display 1:02 in a third text box by clicking the same 'button'I am using Visual Basic (in visual studio 2005) to program a Windows Mobile Classic 6 PDA?

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Use NumericUpDown To Set The Time (Hours : Minutes : Seconds)?

May 29, 2012

How can use numericUpDown to set the Time (Hours : minutes : seconds).I want to use one numericUpDown.

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Conversion Of Time(hours - Minutes - Seconds) To Hexadecimal Value

Sep 1, 2009

I am writing a program and have run into an issue. The program requires a conversion of time (e.g. hours,minutes,seconds) to a hexadecimal value of no more than 4 bytes (e.g. FFFF). I have no idea how this is done. Can anyone point me to a tutorial or give a quick explanation. Sample code would be great as well.

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Time Display - Adding Hours To Convert UTC Time

Dec 20, 2010

I am trying to create what I am sure is a simple program to add hours to convert UTC time. I want to type in a UTC time and have it convert for every state in Australia. [Code] Now that works fine however when the conversion goes past "midnight" it then shows the date and time. I have tried about 50 different things but cannot get it to remove the date when the converted time passes midnight. [Code] The string was not recognized as a valid DateTime. There is an unknown word starting at index 18.

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[2008] Adding 15 Minutes (which Is In An Array) To The Time

Mar 10, 2009

have another problem regarding with time again. After getting a user input time in "H:mm", in what way can I add like an additional 15 minutes to it? Something like this:

1 - User inputs the time in textbox
2 - Adding 15 mins(which is in an array) to the time


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Calculate Hours And Minutes?

Aug 11, 2010

I would like to calculate the difference between hours and minutes from one textbox and the hours and minutes from textbox two. What would be the best way to do this? I think DateTime would be the object to use, but wondered if anyone has any examples or better ways?

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From Days En Hours To Minutes?

Dec 28, 2011

In a textbox  the text     1 Days, 8 hours, 45 minutesI want the outcome in minutes , how do i do that ?

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Timespan Hours And Minutes?

May 23, 2009

I need a timespan difference result in - hours:mintues format.


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Timespan In Hours And Minutes

Dec 12, 2010

i am struggeling with the result of this code. It's present 164,4 hours which is correct, but i like it would says 164 hours 24 minutes.


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A Timer In Hours, Minutes + Seconds?

May 24, 2012

This is what I have so far.


The first part (Label 1 + Timer 1) works fine and it counts seconds but I want it to count minutes and hours too.

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Convert A Timespan To Hours And Minutes?

May 14, 2009

I am working on a timekeeping application in VB 2008 and need to show elapsed time in hours and minutes. I have no problem eliminating seconds but if the hours exceed 24 the time is displayed as days.hours:minutes and what I need is to show (for instance) 30 hours and 15 minutes as 30:15 not 1.6:15

Is there a better way then using code like:
strHours = (TimeSpan.Days * 24) + TimeSpan.Hours
strMinutes = TimeSpan.Minutes
strTotalTime = strHours & ":" & strMinutes

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Forms :: DateTimePicker - Tab Between Hours And Minutes?

Jun 18, 2011

Is there a way to tab between the hours and minutes values when the format is set to time in the DateTime Picker? The default action is move to the next control. I have the ShowUpDown set to true. Do I have to set up separate controls, one for the hours and one for the minutes to get this functionality?

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VS 2005 How To Add Hours And Minutes From Code

Sep 21, 2009

I am adding the timespan and displaying it in a text box...the value can be more than 24 hrs that is the reason i m using the following code..[code]Now i want to add the value of wtothrs0.Text and wtothrs1.Text....but in the form of "hrs:min".

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VS 2008 Countdown In Hours / Minutes?

Jan 14, 2010

Ok so I want my program to keep sending a messagebox pop up at a speed that the user can pick for as long as they choose such as."How many hours" 5."How many minutes" 10..Then that will countdown every minute.[code]

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VS 2008 Get Hours And Minutes From Double

Oct 21, 2010

to obtain double quantity between 2 hours I do this:


But how would it be inversely?For example if I have a number (double), how I know at all the hours and minutes are they?


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Asp.net - Get Difference In Hours/Minutes From Two Date Values?

Apr 11, 2011

I have a date value (e.g. 2011-04-11 07:45:00.000) which I am pulling from my database (via Entity Framework). I need to pull out only the hour from the original date value (e.g. 07:45:00), get the current time, and then subtract the current time from the database time value. In pseudo-code, I'm looking to do something like this:

Dim my_date as DateTime = from_db ' This is the value pulled from the database.Dim this_date as DateTime = Date.Now ' This is pulled via a VB.NET function.Dim my_hour = my_date_but_only_hours ' Somehow, I need to strip the date off the my_date Dim this_hour = this_date_but_only_hours ' Same as line above.Dim hour_difference = my_hour - this_hour Response.Write("There are " & hour_difference & " hours left before the time runs out.")

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Forms :: Calculate The Difference In Hours And Minutes?

Jan 17, 2010

i want to calculate the difference in hours and minutes between 4:35:20 PM and 7:25:34 PM? how am i able to do this is vb.net?

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How To Convert Decimal To Hours / Minutes / Seconds

Aug 24, 2009

im using ms visual studio 2005- vb.net (im a new beginner too)how can i convert decimal result into hour,minutes,seconds? i have degrees result --> i already convert to decimal --> now i need to convert the decimal into hours.i use this formula-degree into decimal (just a notes-im try use calculator)[code]

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Display Duration Only Hours:Minutes:Second In Gridview Asp.Net By Using LINQ To SQL?

May 18, 2009

I want to display the duration only Hour, Minutes, and Second in data Gridview by Subtract TimeCheckOut from TimeCheckIn in ASP.NET using LINQ to SQL Here is code behind:


In Line 3 in function, Dim dif as TimeSpan = DateTime.Now.Subtract(Duration) which give only the duration of Hour, Minute, and Second from TimeCheckIn until DateTime.Now. However, I want to have the duration from TimeCheckIn until TimeCheckOut only in Hour, Minute, and Second.

I know that the FieldDisplayDuration function is totally wrong logic, but I just want you to get my point only, and also it could be the code sample for those who want to calculate the duration of the employee from the hire date. Finally, Let's get back to TimeSpan by Subtract TimeCheckOut from TimeCheckIn in gridview problem, How can I do that?

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VS 2010 Unexpected Malfunction When Changing From Hours To Minutes?

Dec 29, 2010

Here's the
CanTest = CanTest OrElse (DateTime.Now.Subtract(LastTest).Hours >= 1)
If CanTest Then


However, when I change it to 65 minutes instead of 1 hour, it acts up. The time until next question starts going up instead of down... The only thing I changed is 1 hour to 65 minutes:

CanTest = CanTest OrElse (DateTime.Now.Subtract(LastTest).Minutes >= 65)
If CanTest Then
If InputBox(Question(Cur), "Question #" & cur.ToString("###,##0")) = Answer(Cur) Then


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Create A Simple Timer To Count Seconds, Minutes And Hours

Oct 21, 2010

I have three sets of labels, lbl_seconds, lbl_minutes and lbl_hours. These labels have the default value of 00:00 and I want the timer to change that for each label. I have googled this but I cannot seem to find any good info on it. Do I need three separate timers? I have also noticed that the timers have their own tick event handler. I guess it's in this that I need to change the value of the label. But I cannot figure out how to do just that.

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Make A Countdown Timer In Hours, Minutes,Seconds,Milliseconds?

Jan 3, 2010

I have 4 textboxes Hours, Minutes,Seconds,Milliseconds. When textboxes values are set the count down begins. So far everything works except the milliseconds

Timer1.interval = 100
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim Vals3(3)


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Masked Textbox - Use Hour Format With Control Of Max 24 (Hours) 60 (Minutes)

Aug 1, 2011

I use a masked textbox, and I would control the input, the problem is, I use 1 textbox and the control should on the first 2 digits with a maximum of 24 and the last 2 digits with a maximum of 60. Is there a possibility to program this?

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VS 2010 My.Computer.Clock.GmtTime - Double Numbers For Months, Hours, Minutes?

Feb 6, 2011

TextBox1.Text = Environment.UserName + "_" + My.Computer.Clock.GmtTime.Year.ToString + "_" + My.Computer.Clock.GmtTime.Month.ToString + "_" + My.Computer.Clock.GmtTime.Day.ToString + "_" + My.Computer.Clock.GmtTime.Hour.ToString + "_" + My.Computer.Clock.GmtTime.Minute.ToString + "_" + My.Computer.Clock.GmtTime.Second.ToString
This produces, for instance, such text in the TextBox1:

I would like it to displat double numbers for month, day, minute etc, to get something like that:


How do I do it?

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Create A Timer Control For Each Channel With Combo Boxes For Days / Hours / Minutes / Radiobuttons For AM Or PM

Mar 11, 2012

I have an I/O device with 8 channels. I want to create a timer control for each channel with combo boxes for days, hours, minutes and radiobuttons for AM or PM. This is a crude (and not working) example of what I need:[code]

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Small Box Which Updates Itself Automatically To Show The Amount Of Years,months,days,hours,minutes And Seconds?

Oct 20, 2010

I have made a new form on vb 2010. I need a small box which updates itself automatically to show the amount of years,months,days,hours,minutes and seconds from the 25/6/09. How would i do this in visual basic 2010?

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Extend My Interval Timer Timer To Include Hours In Addition To Minutes And Seconds?

Aug 2, 2010

What I need to do to make this code work for hours as well?[code]...

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Calculate The Hours, Minutes, And Seconds In A Number Of Seconds?

Jun 30, 2011

I want to convert seconds such as 254565443 seconds to hours, minutes, and seconds and thought if I could remove the decimal and the numbers behind it and not change the number in front of the decimal then it would work.

dim seconds = 254565443
dim Hour
dim minute


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Adjust Date/time From PDT To Local Time By +-24 Hours?

Feb 10, 2012

I have a program that reads a file with Pacific Daylight Time, I want users to see the time and date in their local environment.

At present I have in Australia a time difference of 18 hours, so I have a list box with -24 to +24 and currently set at 18, my code is elementary as long as I have moved past day one of the month it suits me personally, but I want to distribute my app, so I need something better.

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Converting Seconds To Hours Minutes And Seconds?

Jun 25, 2010

This is my function to goto a specific time in a movie or music, ... check it out..

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click


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Add 4 Hours To A Date Time Value

Nov 17, 2009

can anyby help me to add 4 hours to the following date time value [code]

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How To Sum Time And Convert Into Hours

Sep 6, 2007

I want to know how to sum time like
Case 1
If I have MaskedTextBox included 11:00 am and I have onther MaskedTextBox included 1:30 pm. How I get result be 2:30 hours ????

Case 2
If I have ListBox Included 5:01 , 4:30 , 6:10 , 3:20
Sum Result
H 18: M 61
Convert To Hours
H 19 : M 01

How to Do this Operation with Code VBnet 2005?

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VS 2008 - Adding Hours To Daily Update System

Aug 21, 2010

I was just thinking what is the best way to make daily update system? I have a perfectly work system that checks for updates and downloads the latest files and all that. But one problem the user has to click check for updates button first. I think the real question is how can i add 3 hours to let say 10:00. I also think using the 24 hour system would probably be easier.

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VS 2008 Get Time Span Between Two Hours

Aug 28, 2009

I'm currently using this code to get the time span between the two hours.[code]

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How To Adjust Time Calculations (Total Overall Hours)

Sep 26, 2010

In some text boxes I enter times like "08:00 16:00" then another textbox next to it will display 8 hours then a label at the bottom calculates the total overall hours. There are a total of 7 textboxes for times entered and like the example above and another 7 for the calculation of that days hours worked. My problem is when I enter "08:00 16:30" the total hours in that text box would be displayed "8.5 hours". I need to tweak this so it is displayed 8 1/2 hours. My second issue is that the label that displays the overall hours only calculates if I enter times like "08:00 16:00" if i entered "08:00 16:30" it would not calculate

Here is my code:
Private Sub txtMondatTimeKeeping_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtMondayTimeKeeping.TextChanged, _
txtTuesdaysTimeKeeping.TextChanged, txtWednesdaysTimeKeeping.TextChanged, txtThursdaysTimeKeeping.TextChanged, txtFridayTimeKeeping.TextChanged, _
txtSaturdaysTimeKeeping.TextChanged, txtSundaysTimeKeeping.TextChanged
[Code] .....

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Run A Process Every X Minutes Or At Time Of Day

Aug 12, 2010

What is the best way to run a process say every 30 minutes? Or at 0900?

I have an app which does quite a few things, and want to add something that will run every 30 minutes. Don't want to use windows scheduler as i want to keep it all in the one app.

Is the only way to run a thread.sleep for 1800000? If so, can i run 2 background workers on the 1 app?

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Set An Expiration Time To 5 Minutes?

Feb 13, 2012

I have a code here that the result is set to expire in 15 days. (This code was shared to me by Cor Ligthert)

Dim expirationDate = CDate(registeredDate).AddDays(15)
If expirationDate < Now Then MessageBox.Show("Expired")

I want to change it to expire it in 5 minutes, how would i do that? Like this?

Dim expirationDate = CDate(registeredDate).AddMinutes(5)
If expirationDate < Now Then MessageBox.Show("Expired")

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Battery Life Time - Measurement In Seconds Or Hours

Jan 28, 2011

Searching about kernel32.dll and battery functions in it, I came across some interesting
Public BatteryLifeTime As System.UInt32
The full declaration is:
Private Declare Auto Function GetSystemPowerStatus Lib "kernel32.dll" ( _
ByRef lpSystemPowerStatus As SYSTEM_POWER_STATUS) _
As Integer
Public BatteryLifeTime As System.UInt32
What I don't understand is, what measurement do the "BatteryLifeTime As System.UInt32" is in? I mean, is the Battery life Time in seconds or hours.. Or something else, so how can I convert it to something I can use..

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Cancel Plane Ticket Before 4 Hours Of Departure Time

Nov 21, 2010

If i have textbox1 which display server date as 27-Nov-2010 Textbox2 will display time as 08:00:00 AM..i want if the departure of the plane is Date 27-Nov-2010 and Time 08:00:00 AM then if he/she wants to cancel ticket then it can cancel their ticket till Date 27-Nov-2010 and Time 04:00:00 AM.. Any Body can cancel their ticket before 4 hour of departure date/time..I want cancel plane ticket before 4 hours of departure time if dep time is 08:00:00 AM then Passengers can cancel ticket till 04:00:00 AM ??

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