I'm try to come up with a way for a user to enter a date and time into a textbox and for that value to be saved as a datetime variable back into a database. I'm wondering if anyone knows of a clever way to restrict what values a the user can enter so that the datetime datatype isn't corrupted. I've been playing around with the date time picker but I cannot seem to get that to work for me. I'd like the user to either pick the date and time from a picker and save that into a variable. Or I've seen applications where the textbox will automatically have a formatting type of template that makes it hard for the user to enter an invalid date and time.
I have a datetime field in a SQL Server 2005 table that has values like this:2012-04-23 09:00:00.0002012-04-23 14:00:00.000The minutes, seconds, and microseconds are always zero.I need to display a "time slot" (basically, the time plus one hour) like this:
2012/04/23 09:00 AM - 10:00 AM 2012/04/23 02:00 PM - 03:00 PM
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
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.
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.
I am doing my school on project on rs 232. it involoves VB. I have found out how to save text in .txt file in the code. But i have no idea when i save this particular text for instance with time and date oso..
For example my i can do this.I want to save " Hi i am VIJAY "
when i open the text file i can see " Hi i am VIJAY"
But what i want is When i open the text file i want to see " Hi i am VIJAY 10:35 24/01/2010 "
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?
I have created a text box....a button and a date time picker control. I have showed the calander control on click of the button event....when a value is selected in the datetimepicker the value should be showed in the text box...I have done this....in the datetimepicker value change event
But then I want that the datetimepicker control to hide again...but this code I cant write in the value change event since if I write the hide code in datetimepicker value change event it will hide it every time...cant write in lost focus also since it will have to wait till the focus is lost. cant write the code in text box value change event since the value will be changed after every click in datetimepicker I want to write the code when the value in calander is doubleclicked...
I have two date time pickers , namely "Date_of_ReturnDateTimePicker" and "Date_of_IssueDateTimePicker". Now, what i want to do is, that when i press the "total" button, the value of issue date should be deducted from the return date value, and the difference in days should be put in a textbox.
I am getting an error where the data is retrieved from the MS Access Database "Date/Time" field.The attached the error. Other fields which have text data type are working fine
Using the datetime function to determine lapse time. (Subtracting one from another.) Then placing the answer into two text boxes one with the date and one with the time, later to be placed in a database as two seperate fields. Was thinking I could convert the date/time to a string if necessary then use simple stringmanipulation.... however fear it won't be good programming and will effect resources and end program speed.
I want to save datetimepicker value of date and time in two separate text files. Currently, when I select a date from datetimepicker and save it in a text file it saves both date and time as below:
5/11/2011 8:25:06 PM What I would like to happen is as below: Datefile.txt saves 5/11/2011 Timefile.txt saves 8:25:06 PM Alternative solution that can work for me would be, if the time (only the TIME) can be modified after saving as below: saved datetime into text file is 5/11/2011 8:25:06 PM
How can I modify the time only to say 12:00:00 PM. By doing so I would like to keep time as 12:00:00 but date can be changed by the user using the datetime picker.
I'm doing an error log in my code and I'm trying to output the errors to a text file with a specific date/time in the title so they can differentiate. I've tried things like logname = "C:Documents and SettingsSeDingDesktopErrorserrorsLog " & DateTime.Now.ToString() & ".log" But I get this msg "The given path's format is not supported." all the time.
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?
So basically, I'm getting date information from the user and trying to convert it into a date format, and show it to the user in a text box which is obviously named "DisplayArrDate", and "DispArrDate" is a date variable and "MonthArr" & "DayArr" & "YearArr" are strings which are always numbers because they are selected from a drop down combo box.
Now, the code works perfectly on my computer and some others, but for some unknown reason, on some computers, even if they have the same local date settings, it gives me the error: "Conversion from string "4/13/2009" to type 'Date' is not valid.", that's just one example, where "13" is obviously the day. I use the month/day/year format because, in the toturial I'm reading, it tells me, that no matter my local date settings, when using VB 2008, the month/day/year format should always be used and it will display a date in the local format automatically. It seems that on some computers, this isn't the case, and the month/day format is creating errors.
Either I just can't seem to find the right way to word the problem or it's a lot more complicated than I thought, but what is the easiest way to assign the current date to a variable and format it to a specific format? Basically, I want to do the VB.net equivalent of this VBA line:
I'm taking values from Numeric Ups and Downs for Hours, Minutes and Seconds. The problem is that, for example, if the time for example is 9.15 am it will show as 9:15:0 What I want to do is format them so if any of the values(Hours, Minutes or seconds) is less than 10, it will add a 0 before the number so as the number shows as 09:15:00. What I tried is this but it does not work: [Code]
