I have DGV like parent form and detail form like child. I want to give ability to user enter time in detail form in format like HHH:mm, save that value in database and display it in DGV.How to format timepicker or maybe need to use other control to have ability enter time data in format like HHH:mm?
View 4 RepliesI have to create a program that ask the user to enter the amount of hours work for 5 diferent projects in textboxes. The user have to enter the time he worked in minutes. Ex: 153, 280, 600, 130, 20... The total then is out putted into a textbox in this format "13 Hours and 35 Minutes" I'm having dificulties making the conversion and the separation from hours and minutes. I understand that the total is divided by 60, but if we fallow the above numbers the total hours comes out to 1183 / 60 = 19.71. So I'm having problems with the .71 mnts or digits... so from this total I have to output the total of in this particular format: "19 Hours and ?
View 2 RepliesWhat did I do wrong below? When I pass the enter key but for somehow the enter key event doesn't get triggered.
CODE:
I have a function that allows a user to enter numeric vallues and also a period for the decimal points but I also want to allow for users to enter the minus sign to allow users to enter negative values . How would I go about it.
Public Function SingleDecimal(ByVal sender As System.Object, ByVal eChar As Char) As Boolean
Dim chkstr As String = "0123456789."
If chkstr.IndexOf(eChar) > -1 OrElse eChar = vbBack Then
If eChar = "." Then
[Code]...
how to enter a data that i enter in textbox to a datagridview... for example i enter in the textbox is round and when i click add it will go to database... im using ms access database
View 1 RepliesI am trying to enter the following on an excel spread sheet from vb.net:applic.activesheet.cells(1,1)="=server|topic!" & Item & My.computer.keyboard.sendkeys("{CNTRL} {SHIFT}{ENTER} ")The error says: "Expression does not produce a value"I tried even {ENTER} and still the same error.
View 12 RepliesI have a web browser project and the address bar doubles as a search bar (like google chrome). I need to detect if a user Ctrl/Alt + Clicks/Presses enter so it can specifically search or navigate. Any ideas?
View 3 RepliesThis Code allows you too countdown seconds and minutes but im not sure how to add hours or maybe even days to it,[code...]
View 7 RepliesI have to create a form that I enter the price of gas each month over a year. I enter the price in a text box and click the enter button to send the price to a list box immediatley and use an array. I have the following code but I don't think it's working with the array correctly as it will let me enter the information but doesn't stop letting me enter after the 12 prices. I am really having a hard time trying to figure out how to set up this input for an array and make it all work.
[Code]...
can anyby help me to add 4 hours to the following date time value [code]
View 4 RepliesI am writing a system that utilizes the Timer to execute a command after an interval of three seconds. The command is to send a trigger to my RFID reader and hence the program will then decode the received data and changed it to information. It runs fine for the first few hours, but it will crash after that and the error given is an "System.NullReferenceExeption - Object reference not set to an instance of an object." error. Initially, i thought that it might be something that relates to my comobobox selected index change event that might be causing the crashes, but yet the application is crashes after i removed the section.
I fail to find the reason of the crash, even after spend fewing days finding the memory leak or some other events that might cause the crash.
I have insert TRY CATCH METHOD, just to catch the exeption error message that might cause by one of the codes, but still it doesnt show me.
I have 2 applications, 1 that goes out and grabs data every minute and inserts or updates that data depending on a time interval into sql tables, the other 1 goes out at the top of every hour and grabs hourly data. Both of these applications run perfectly fine when they are compiled and published to run on my development PC, both do xml validation and check for duplicate data prior to any sql insert so I know it's not getting SQL exceptions.
When I move them to the Production Server the 1 minute application will work for a few hours and then freeze up and stop working.The hourly application half the time won't work at all.
I've made sure to include a local copy of the references when I compile/build and publish the application. I've made sure the Production Server is up to date with the latest .Net framework.
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?
View 12 Repliesif i have two variables,
Dim Hours
Dim Minutes
what i want to do is add the minutes to hours, so if Hours =2, and minutes = 120 I want to say hours = hours+2, not so simple as it seems or am i missing something?
Dim hours
Dim mins
IF mins > 60
[code]....
I have a string that extract it from database table row
Dim Hour As String ="4:15 PM"
How to convert the hour String to a real hour for the date type?
[code]....
View 2 RepliesIn a textbox the text 1 Days, 8 hours, 45 minutesI want the outcome in minutes , how do i do that ?
View 7 RepliesI 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
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?
I'm writing a program that checks something once a day. When the property has been checked, I store the "Now" value as LastCheckedDate. Since this is a dateandtime, in includes both the value of the date and the value of the time. The next time the program is run, I want to determine if the current value of Now has a different date than the LastCheckedDate. The problem is that functions like Datedif subtract the two values using the times, so if the first check was at 16:30 on 11/2/2011 and the second check was at 9:05 on 11/3/2011, the result is about 16 hours, which is 0 days.
[Code]....
I need a timespan difference result in - hours:mintues format.
[Code]...
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.
[Code]...
i have a TimeSpan object which calculates hours and minutes that are passed in.[code]
View 8 Repliesnow when the user login.. he/she will have a time duration of 1 hours..now when the user play after one hour he/she automatically logout and turn back again to the login page.now i done that after one hour of playing by the user he/she will log out now my problem is how can i prevent the user for login again and said that he cannot play again because his/her time is finish...?
View 4 RepliesThis is what I have so far.
[code]...
The first part (Label 1 + Timer 1) works fine and it counts seconds but I want it to count minutes and hours too.
theyI had a asp.net (vb) web application to store work overtime (OT) records. In SQL server, the OT table likes this, e.g.:
[Code]...
As user will input previous date OT records, so the records in db will not be in sequence. the date of records#14 is before records#13. if user want to know which OT records cover the last 2 hours, the system should retrieve record #15 (90mins) & #13 (30mins) because they covers the final 2 hours. How to write the SQL statement to retrieve the records?
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
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?
View 1 RepliesWhat I need to do is have my application check to see if the last hour that was inserted into the database table is equal to the current hour minus 1 hour when it runs. If it is not equal to the current hour -1 then it needs to go back and download the missing data automatically.
The hours go from 1 to 24 with midnight being the 24th hour as you'll see in my code. My problem is I don't know how to code what I'm trying to do.
Here is the current code:
Private Sub HourDownload()
DeleteFileHour()
If OneHour("C:abcd.pfx", "******") = True Then
[Code]....
I have tried searching all over the web for this logic. Got many but half of them did not match what i was looking for and half were malfunctioning.I want to calculate business working hours between 2 datetime, where in I should be able to set the working hours as well as weekends and holidays should not be calculated.
View 7 RepliesI 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".
View 7 Replies