How To Add, Subtract Time, And Date
Dec 12, 2004can i do this in VB.NEt example i wanna subtract the difference from 8:00 AM TO 12:00 pm how can i do this what namespace do i need? how can i add time? how can i add two dates
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DB/Reporting :: Subtract A Date From A Date?
Feb 12, 2010I'm using vb.net 2008 and sqlserver 2008 and I want subtract a date from a specified date. Example:
I want to subtract Commencedate from Today's Date but when I used datediff it gave me (argument "interval" is not a valid date).
When I used year(Commencedate)-year(now), it worked but the month did not get subtracted.
2005 - Subtract A Date From The (current Date Minus 7 Days) And Produce A Number Of Days?
Sep 28, 2010I have a date in the future e.g. 13/10/2008 I need to subtract the current date (today is the 28/09/2010) minus 7 days, so thats 21/09/2010 minus 13/10/2008, which would equal erm, 720 something ? But the current date won't always be 28/09/2010, obviously. I need the code for this. EDIT: When i said future I mean past :)
View 3 RepliesExcel - Subtract From Date?
Jun 16, 2012In excel macro i got this two variables:
TimeF_1h = Cells(x, 3) - 0.041667
TimeF_12h = Cells(x, 3) - 0.5
i tried to do the same in Vb.net, but something is wrong i assume i should do it other way.
TimeF_1h = .Cells(x, 3).Value - 0.041667
TimeF_12h = .Cells(x, 3).Value - 0.5
I don't know what does it mean:
0.041667 and 0.5
in excel column are dates in this format:
2011-03-07 16:35:23
Add 1 Year To A Date And Then Subtract 1 Day From It In VB 2010?
Dec 27, 2011My question title says all. Suppose the given date is 7th july 2011. So what I want to get in result is 6th July 2011. And leap years aren't to be counted. The day number always should be one less than today. I did this:Dim year As Date = "1/15/2009"''adds 1 years to current dateMessageBox.Show(year.AddYears(1))
View 5 RepliesHow To Subtract A Month From Date Object
Feb 3, 2010How do I subtract a month from a date object in VB.NET?
View 4 RepliesSubtract And Add Time Value In VB 2010?
Mar 15, 2012I'm Currently working with a payroll system with daily time record.. I'm having troubles with their time records, what i did is this, i created 6 textboxes on the form the 1st textbox is for the AM IN 2nd is for the Lunch OUT the 3rd Is for the total hours worked for the half day, and the same for the 4th to 6th textboxes. I actually get the difference of 2nd and 1st textboxes and show the result at 3rd textbox and same for the 4th-6th textboxes using this code that I also get in this site
Dim TimeA As Date
Dim TimeB As Date
Dim hh As Integer
[Code].....
but i really didn't understand it so right now I don't know how to add the value of textbox3 and textbox6 so I could get the total hours worked of the employee..
VS 2005 Subtract One Time From Another To Get The Result In Hour And Minutes?
May 6, 2009in one textbox i have 10:00 PM and in another textbox i have 12:00 PM....i want to subtract 10:00 PM from 12:00 PM and get result ie 2 hours...how can i perform that?
DateTime.TryParse(TextBox1.Text, d1)
DateTime.TryParse(TextBox2.Text, d2)
the code is to convert the text into time.
[code].....
Subtract A Date From A Date?
Feb 12, 2010I'm using vb.net 2008 and sqlserver 2008 and I want subtract a date from a specified date. Example: I want to subtract Commencedate from Today's Date but when I used datediff it gave me (argument "interval" is not a valid date). When I used year(Commencedate)-year(now), it worked but the month did not get subtracted.
View 2 RepliesHow Does DotNet Handle Parametrized Dates Where Programmatic Date Has No Time But Sql Date Has Time
Jul 16, 2010Thought I'd see if Stack overflow is quicker than me testing something while I get a thousand interruptions from other work :)
I'm updating an old VB net application and trying to refactor some of the logic as I go. The app looks for data from a single date across a few tables and writes that view to a file.
Writing the query in SQL I'd get the equivalent of
SELECT * FROM table
WHERE CAST(FLOOR(CAST(table.date AS float))AS datetime) = '15-Jul-2010'
Ideally I'd use
SELECT * FROM table WHERE date=@input
and add a date object as a parameter to a System.Data.SqlClient.SqlCommand instance
Are those two comparable? Will I get the results I expect?
Record A Start Date And Time And Then The Stop Date And Time In A Rich Text Box
Jan 12, 2010I am using VB 2008 and want to record a start date and time and then the stop date and time in a rich text box, i can get the start time into the box but so far can only stop the time instead of 2 seperate times, what i have is a drop down box with a list of computers 1-10 i was trying to get it so you picked a certain computer and that went into the text box then you started the timer and that was recorded, finally you stopped the timer and that was recorded but as i am a total newbie it does not work
Here is the code i have.
Public Class Form1
Dim time2 As Date
[CODE]...................
SQL Exception On Insert Of Dateandtimepicker.value.date Into Date Datatype: (Conversion Failed When Converting Date And/or Time From Character String)
Apr 8, 2010Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 RepliesC# - Convert A Date And Time To UTC Time Based On The Time Zone Of The User?
Sep 6, 2009I have an ASP.NET application with a SQL Server back end. I am storing all my dates in UTC format and doing the appropriate conversions to the local time zone of the browser viewing it. One of the pages asks for a start date and end date (no times).
I am taking the start date and setting the time to 00:00:00 hours (midnight) and I'm taking the End time and adding a time of 23:59:59, so that the date range covers the whole day. Now what I'm trying to do is do a SQL query to do a search for records in this date range. The problem is, the data in SQL is in UTC time and the user is typing their dates and times in their local date and times. My quickest solution was to convert the date and time to UTC, then search the records. However, by doing this, I am to believe ASP.NET converts the given time and date to UTC based on the server time zone. How can I convert a date and time to UTC time based on the time zone of the user?
Time Calculations - Current Time Is "01:05:27" And If Subtract "15:27:06" Away Get Time As "09:38:31"
May 3, 2010Ok i have bashed my head against a wall trying to work out how this is done. i have 2 text boxes with the values:
[Code]...
Now if txt2.text = the current time and i want the time when it was txt1.text (15hours,27mins,6seconds) ago how do i do it... for example current time is "01:05:27" and if i subtract "15:27:06" away i should get time as "09:38:31"
Convert Excel Date To Sql Server Date Time Format Using ACE Provider?
Jun 24, 2011I am attempting to import data in a batch from an Excel Worksheet to a Sql Server database. Everything works except for the one date field in the spreadsheet. The date returned is off by four years from the value in the spreadsheet. Example: The Excel sheet has a date 10/24/2010 14:18, but when I look at the column in my query, the date is 10/23/2006 2:18. This pattern, 4 years and 1 day earlier, is repeated for every row in the worksheet.
The Excel column comes to me as a custom type, formatted m/d/yyyy h:mm. I receive this from an outside vendor and having them change the column is not going to be my simplest solution.
For what it's worth, the relevent part of the query is:
Select [Date Created] From MyWorksheet
DB/Reporting :: Search A Table, Confining To A Specific Date Range Based On A Date-time Column?
Jul 14, 2009Would it be possible to search a table, confining to a specific date range based on a date-time column, and get a count of the 10 most used words in a particular var-char column excluding a list of words?All in SQL?Currently I am pulling out the records that match and sorting through the contents outside of SQL, I would think where I can do it directly on the server it would be more efficient.(SQL 2008)
View 4 RepliesDisplay Todays Date When Refresh Date - Time Picker
Jan 3, 2009i am using date time picker and i am selecting 1 date from calender.after selection of that date i want to refresh date time picker i.e. it should display todays date.
View 2 RepliesInserting Date From Date Time Picker Into Sql Server 2005
Dec 18, 2008I have an Sql server 2005 table called Emploeefl with 2 fields, EmployeeCode and Date of Birth. The data type for the date of birth is Datetime. I have a Date time picker on a vb.net 2005 form called dtDateOfbirth. When I click on the save button I get the error message "Conversion from string 'yyyy/MM/dd' is not valid. Below is the code
Dim newQE_Date As Date
newQE_Date = Format(Me.dtDateOfBirth.ToString, "yyyy/MM/dd")
'newQE_Date = String.Format("2008/09/10", "yyyy/MM/dd")
[Code]....
Get SNTP Time - User Can Changes The System Time Of His Computer To A Advancing Date?
Jan 24, 2012I'm using
Days = Dat2.Subtract(Dat1).Days
where
Dat2 = today
Dat1 = installed date
to trace the days of a program installed in user's computer.However, the user can changes the system time of his computer to a advancing date. How can I get a SNTP time from internet to solve this problem?
When Form Loads It Load The Current Date And Time But The Time Does Not Change It Should Run?
Aug 24, 2010I am using this line of code on form load event it is working very fine but i have to problems
1. It replaces the form name and display the date and time but i want to keep both date and time and forms caption separated by some space.
2. When form loads it load the current date and time but the time does not change it should run.
What should i do please please help me code is as follows
Me.Text = Date.Now.ToLongDateString & " - " & TimeOfDay
Date Time Picker - When Select A Date, The Text Does Not Go Away
Apr 7, 2011The problem that I'm having is that when I try to select a different date, the text doesn't go away. That may make no sence, but let me tell y'all what I've done.
1: Created a GroupBox
2: Put a DateTimePicker in the GroupBox
3: Put TextBoxs in the GroupBox
4: Changed the DateTimePicker to look like this:
A)Checked - False
B)Allow Drop - True
I thought that if I changed that, then the text in the text box would go to that specific date. It didn't do that, it just stays the same. What I'm trying to do is enter text in say 3/7/11 and when I choose date 6/12/12 it will display blank text boxes for me to enter something different.
Date Time Picker In Form 1 And Show The Date?
Jun 1, 2010How do i code a date time picker in form 1 and show the date and time in a label in another, I have 2 forms and a module to transfer.
View 4 RepliesAsp.net - Get The Current Date And Time In Textbox In IST ( Indian Standard Time)
Dec 6, 2010How to get the current date and time in textbox in IST ( Indian Standard Time) in vb.net ?
View 1 RepliesTrigger An Event At The Time Selected In The Date Time Picker
Dec 23, 2010i'm using a date time picker with format set to time. i want to be able to trigger an event at the time selected in the date time picker
View 19 RepliesSet A Date / Time To A Date Time Picker In Net 1.1?
Dec 15, 2009I have a datetime picker in one of our apps. When loading up the win form I need the date time picker to default to the Wednesday following todays date. Any idea how to do this? We are using .Net 1.1 for this app.
View 1 RepliesAdjust Date/time From PDT To Local Time By +-24 Hours?
Feb 10, 2012I 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.
Date Time Picker And Event To Trigger With Just Time
Dec 22, 2010i'm using a date time picker and want an event to trigger with just the time so it will trigger every day at a certain time. can anybody help
View 1 RepliesNow() Function Returns Date And Time Which Is Different From System Time
Nov 24, 2009The Now() function in VB.NET returns date and time which is different from the system time that I see on the right-bottom on the notification bar. It is 15 hours slower than the system time. Has anyone ever met this problem? I'm using .NET 2.0.
View 2 RepliesStore Time Date And Time To The Mysql Database?
Jun 24, 2009Im using vb.net and the database is mysql to write a time management system. how i store date and time to the database?
View 2 RepliesConverting Date And Time Format To Date?
May 3, 2010I have a problem. I'm making a alarm clock and I need a way of converting a "dd/MM/yyyy HH:mm:ss" format into a date time format. This means I'll be able to compare the dates in a listbox using the for each function, to the current date and see whever it has passed and therfore the alarm should be deleted. It is currently in a string form so I can't use < and > to compare it to the current date as that is in a date form. I've tried using CDate but it doesn't work as it only will convert these formats:
"August 12, 2004", "2:07:30 PM" and "August 12, 2004 2:07:30 PM"