I'm subtracting hours from a date object like so:
startDate.AddHours(-7.0)
endDate.AddHours(-7.0)
However It doesnt seem to affect the day of the object. My question is this, when subtracting hours from the object does it subtract it from the global date? I.e make "May 7, 2011 1:00:00 AM" into "May 6, 2011 6:00:00 PM" when subtracting 7 hours or does it just affect the hours of the object?
I have a form with 3 txtboxes. The user has to enter their date of birth in the 3 boxes in the form
-DD in the first box
-MM in the second and
-YYYY in the third
I then need to get todays date and take their date of birth from todays date so that I can output to 3 labels the length of time they have been alive in years,months and days.I assume I will need to use timespan? in some way but I am not sure how , or is there perhaps a better way?
how I would go about subtracting todays date from a specified date. For example, I want a lable control to say "9 Days Left To Register" where 9 is the dates is todays date subtracted from registration date.
View 4 RepliesI have a DateTimePicker (dtBBDate) and a textbox(txtDBBDate) object in my form....but what i want when user change the date of dtBBDate my text box should show show the date 10 days minus from that selected date i.e. if user select 10 may text box should show me 1st may?
View 2 Repliesi have a variable [ Dim mytime = "12:30:00 AM" ]
i want to subtract mytime from TimeOfDay and i also want to get the difference as a integer value... how should i do that..
i have added the following code
Dim mytime = DateTime.Parse("1:16:00 AM")
Dim result = TimeOfDay - mytime
dim finalresult = result.Seconds
but it is giving me negative values
I have a predefine time value of we'll say 1:30 PM. Im wanting to start a process at 5 minutes till 1:30 which would be 1:25. So this is what Ive tried
Dim MyTime As System.DateTime
MyTime = TimeString
MyTime = MyTime.AddMinutes (-5)
[code].....
I have a string variable that contains "19:39:43", I would like to convert that to a date object. When I try I get a formatexception was unhandled error during debugging. I want to convert it to format of hours:minutes:seconds but cannot see how this can be done..
Code snippet:
Dim strtxt As String = "19:39:43"
Dim Datevar As Date = Date.ParseExact(strtxt, "HH:mm:ss tt", Globalization.CultureInfo.CurrentCulture)
I tried just "HH:mm:ss" but not sure if that worked...
i want to save the value of date time picker control object to mysql but it kept saying error.the code perfectly works for text box values but it doesn't work for date time picker control.
View 1 RepliesI'm looking for a way to convert a 5 character time representation to a date object. ie. "0937a" should be "6/16/2010 9:37 AM" or "1215p" should be "6/16/2010 12:15 PM".
View 2 RepliesThought 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?
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]...................
Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 RepliesI 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?
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
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)
View 4 Repliesi 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 RepliesI 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]....
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?
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
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.
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.
View 4 RepliesHow to get the current date and time in textbox in IST ( Indian Standard Time) in vb.net ?
View 1 Repliesi'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 RepliesI 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 RepliesI have a string that holds a value in the format of ddMMyyhhmmss.
Example 240512024707
I need to be able to convert this date to a real .NET Date object.
I am currently using CDate but it seems CDate does not recognize the format, is there any way of specifying the string format to CDate ???
row.Item("NoteDate") = CDate(n.noteText.Substring(0, 12).ToString).ToString("dd/MM/yyyy hh:mm:ss")
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.
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
View 1 RepliesThe 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 RepliesIm 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 RepliesIf I declare my object at the beggining of my page class, and instantiate it in a dropdownlist selected_index change event. Shouldn't this object be available thru out the entire page and also persist thru a postback? I lose the object in my selected date change event in my calendar.
[Code]...