Format field to accept total time data HH:nn

I have a form that tracks total time spent on a project in hours and min. It contains the start time,  Completed time and Total time fields.  The problem is that I the total time field will only store the value if it is a text field and on the report I need to calculate the sum of all the totaltimes column in the report footer. I cant get it to calculate the text data format.

Starttime  (dateTimeformat)
CompleteTime (DateTimeFormat)
TotalTime (number Format)
Private Sub Command6_Click()
If [Completetime] > [starttime] Then
  TotalTime.Value = Format([Completetime] - [starttime], "hh:nn")
Else
   TotalTime.Value = Format([Completedtime] + 1 - [starttime], "hh:nn")
End If
End Sub

Open in new window

mickeyshelley1Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Rey Obrero (Capricorn1)Commented:
set Data type of the total time as Number, Double

with this type, you can easily make calculations

you can display it in hh:nn  with

format([TotalTime],"hh:nn")

use this codes

Private Sub Command6_Click()
If [Completetime] > [starttime] Then
  TotalTime.Value = [Completetime] - [starttime]
Else
   TotalTime.Value = [Completedtime] + 1 - [starttime]
End If
End Sub
0
mickeyshelley1Author Commented:
I entered a start time of 08:00 and a completed time of 14:00 and the Totaltime value was 0.25 rather than 6:00
0
Rey Obrero (Capricorn1)Commented:
that is correct  0.25 is 1/4 of  1 day (24 hrs )

if you do this  

format( 0.25, "h:nn")

it will give you 6:00
0
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

mickeyshelley1Author Commented:
If i leave it as is will it allow me to calculate the total hours and min of all the entries in the total time column in a report?
0
Rey Obrero (Capricorn1)Commented:
do you want to display  hh:nn in the report per record ?
do you want a total value in the format hh:nn too ?

create a query with one column for display and another column for calculations.
0
Helen FeddemaCommented:
It is very complicated to accurately do math on dates and times stored as text such as "8:30" or "2:15 PM" (not impossible, but when I did this for an Outlook custom form time sheet, the code for converting the text In and Out times for three work shifts into numbers and doing the calculations for various subtotals and totals ran over 50 pages).  I would recommend storing all the date/time values in Date fields, and doing the calculations using these fields, so you can use DateAdd and DateDiff to do the match.  Then you can use the Format function to convert them into the desired formats for display.
0
Rey Obrero (Capricorn1)Commented:
see this sample db

open report
Q-28022452-db.accdb
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
mickeyshelley1Author Commented:
(do you want to display  hh:nn in the report per record ?)
The priority is for the form to capture the total hours/min on each day,  in the proper format so that I can display the total time value in hours and mins on the footer of a report. Kinda like a time clock would capture the total hours worked in a pay period
0
Gustav BrockCIOCommented:
Always store date and time using data type Date.
Then, for display, apply the format you wish.
Thus:
Private Sub Command6_Click()
  If [Completetime] > [starttime] Then
    TotalTime.Value = [Completedtime] - [starttime]
  Else
    TotalTime.Value = [Completedtime] - [starttime] + 1
  End If
End Sub

Open in new window

Then apply the format h:nn to TotalTime.

When you sum these, the total will probably exceed 24 hours.
Use this function to convert such values to a string of hh:nn
Public Function FormatHourMinute( _
  ByVal datTime As Date, _
  Optional ByVal strSeparator As String = ":") _
  As String
  
' Returns count of days, hours and minutes of datTime
' converted to hours and minutes as a formatted string
' with an optional choice of time separator.
'
' Example:
'   datTime: #10:03# + #20:01#
'   returns: 30:04
'
' 2005-02-05. Cactus Data ApS, CPH.

  Dim strHour       As String
  Dim strMinute     As String
  Dim strHourMinute As String
  
  strHour = CStr(Fix(datTime) * 24 + Hour(datTime))
  ' Add leading zero to minute count when needed.
  strMinute = Right("0" & CStr(Minute(datTime)), 2)
  strHourMinute = strHour & strSeparator & strMinute
  
  FormatHourMinute = strHourMinute
  
End Function

Open in new window

For example:
=FormatHourMinute(Sum([TotalTime]))

/gustav
0
mickeyshelley1Author Commented:
Thank you I will try it..
0
Rey Obrero (Capricorn1)Commented:
mickeyshelley1,

did you look at the sample db i uploaded at http:#a38861263 ?








.
0
mickeyshelley1Author Commented:
I just downloaded it thanks Cap
0
mickeyshelley1Author Commented:
Thanks Cap, that is what i needed...
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Access

From novice to tech pro — start learning today.