Tip OleDbException On Regional Date/time Formats?
Feb 4, 2010
Using OLE and Jet, you may receive errors when saving system dates and times to databases in different regions.Consider what happens when saving dates and times returned using the Now() function in Canada or the US: the date string "#2010/02/03 08:59 AM#" will save fine. If using 24 hour time, the string "#2010/02/03 08:59#" will also save fine.
If you change your system region to Spanish (Peru) or Spanish (Mexico), the ante meridiem changes from "AM" to "a.m." (or "p.m."). The date string becomes: "#2010/02/03 08:59 a.m.#"Note that this will NOT save correctly to the database and throw a System.Data.OleDb.OleDbException. The workaround we use is: Public Function clean_date(ByVal strDate As String) As String Dim str_buffer As String
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Feb 4, 2012
I'm running Microsoft Visual Basic 2010 Express on Windows 7, using a Regional Setting set to New Zealand.
When I enter a date in a NZ format (d/mm/yyyy), the IDE highlights the date and tooltip reports date constant not valid. But it is valid for NZ! Meanwhile, the IDE happily accepts dates in the US format.
I would have expected VB to look at my PCs regional settings and set this as the default format. What is wrong here? I have reinstalled the application, but still have the same problem.
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Mar 5, 2009
Within Control Panel -> Regional and Language Options, there is a Formats tab, with a drop down of all possible language formats. I wish to retrieve this list using VB.NET. Could anyone point in the direction of which Windows API call to use?
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Mar 11, 2011
I am throwing some data out into Excel and am having some formatting troubles. I have 5 columns (date, time, a long number I don't want displayed in scientific notation - text is fine, text, text). I can get it all working with numberformat, however I have to do them different ways.
Date works this way cell.numberformat = "m/d/yy" and it formats it to say 3/1/11
Time works this way cell.numberformat = "h:mm AM/PM" and it formats it to say 8:07 AM
For the long number cell.numberformat = "@" and it doesn't change the format and it gets displayed in scientific notation
BUT if I use cell.style.numberformat = "@" it works as it should, but it messes up all of the date and time cells. Apparently when you use style.numberformat, it doesn't just apply to the cell you're working with. If I try using style.numberformat with the date and time formats, they don't change and are entered as if I didn't change the format at all.
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Feb 11, 2011
This has been driving me batty for the last while. I have an application that is passing up data to a SQL server table. Part of the data is dates. Because of settings on the SQL server the update will not accept the MM/dd/yyyy format. I have been trying for quite some time to get around this.
For some more information. Changing the update method or the server regional settings is not an option and I don't want to change my regional settings as this may not reflect the production server when this goes live.
Here is what I have tried so far
Code:
Dim dateEnd As Date = Date.MinValue
Dim dateStart As Date = Date.MinValue
If IsDate(Me.txtPostEnd.Text) Then
[Code]....
It works fine if the day is 12 or below because it still thinks that is the month. Is there a way to force the code to recogize that I want to use dd/MM/yyyy format or even dd/MMM/yyyy format?
This has to be done at thhe vb code side as the update to the SQL server is completed via a custom framework so I can't customize the SQL code to insert the data using a CONVERT
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Dec 13, 2011
example: inside regional date format setting i set "Short date format dd/MMM/yyyy" and inside vb.net program i set "strSQL = strSQL & ",'" & Date(Date.Now.ToString("dd/MM/yyyy")) & "'" ----> working fine. if user changed the regional date format setting to other format like "mm/dd/yy" facing problem during saving record into sql table. error date conversion. It's possible to avoid using computer regional date format from vb.net? or have any other way...
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May 12, 2009
Iam looking to change programmatically, from Regional language setting [control pannel] date format to dd/MM/yyyy .
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May 12, 2009
i used date in my project often. but every time i used format(now,"dd/MM/yyyy"). But i want to change the system date format to "dd/MM/yyyy" permanently.
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Nov 5, 2011
My Australian dates (dd/mm/yyyy) are being converted to U.S. date format (mm/dd/yyyy) despite using custom date specifier for Access table fields.Allen Lamb
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Mar 7, 2008
Is there any way to make VB.NET to accept for all Date Formats as in VB6.0...I'm upgrading VB6.0 applications to VB.NET... Here I'm finding the Functionality difference due to VB.NET feature which goes for System date Settings.I tried using CultureInfo. But it also specifies only one format at a time..removing this functionality difference
Explanation : IsDate("MM/DD/YYYY") Returns False if the system date setting is of "DD/MM/YYYY"
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Aug 19, 2010
I have a program (below) which runs an SQL query on an Access database to bring back records based on the date a user selects. This issue seems to be that US date formats are the only date formats that SQL queries accept. I may be wrong, but this is my understanding. All my dates in the database are in EU date format (dd/mm/yyyy). What happens when i run my code is that I can not access a record with the date of 08/05/2010 unless the input date is 05/08/2010.
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Sep 24, 2009
I have a variable which I called ElapsedTime. I press a button and it displays the time in seconds since clicking the button, into a label . I did it with HTML
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
LblElapsedTime1.Text = ElapsedTime
ElapsedTime = ElapsedTime + 1
End Sub
Private Sub BtnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStart.Click
Timer2.Enabled = True
End Sub
This updates every second a bit like a simple stop watch. Great so far, because I do need the elapsed time (in seconds) for later use in my app. However, whilst elapsed time is being displayed in this label on the screen I want it to be shown in HH:MM:SS format. How can I convert it into a new variable " ElapsedTime2 " so that I can show it in the desired format yet still retain my original " ElapsedTime " variable for later.
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Jul 16, 2010
Thought 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?
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Jan 12, 2010
I 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]...................
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Apr 8, 2010
Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
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Sep 6, 2009
I 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?
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Jun 24, 2011
I 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
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Jul 14, 2009
Would 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)
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Jan 3, 2009
i 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.
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Dec 18, 2008
I 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")
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Jan 24, 2012
I'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?
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Aug 24, 2010
I 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
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Apr 7, 2011
The 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.
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Jun 1, 2010
How 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.
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Dec 6, 2010
How to get the current date and time in textbox in IST ( Indian Standard Time) in vb.net ?
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Dec 23, 2010
i'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
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Dec 15, 2009
I 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.
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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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Dec 22, 2010
i'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
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Nov 24, 2009
The 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.
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