Date Time Validation In .net?
Apr 17, 2010how can I validate given DateTime between two DateTime using vb.net?
the given DateTime must not in between the two DateTime..
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Date Validation - User Can Enter Their Date Of Birth?
Dec 4, 2009im trying to get the user of my program to enter their date of birth ad for the program to return how old they are in years, months and days (you are 10 years, 3 months and 23 days old) type thing and if its their birthday, to return an appropriate message.atm ive got a textbox for the days, a combo box for the month and another textbox for the year. i guess the real question is how do i use these to do the above.
View 9 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?
Add Date Not Null Validation In .NET?
Oct 24, 2009This video shows how to add validation for a textbox:[URL]..what about date ? I can't make it work for date.
View 2 RepliesMasked Textbox Date Validation ?
Dec 15, 2011How to enter the date in the masked text box and how to validate it
View 2 RepliesC# - Applying Date Validation To Excel Cell?
Jan 27, 2012I am working on applying date validation to excel cell(range) from VB.NET.
Private Sub DateValidExcelRule(ByVal worksheet As SpreadsheetGear.IWorksheet, ByVal DateRange As String)
Dim dt As Date = CDate("1/1/1900")
[Code].....
When I enter 4 digits whole number 7777 it is validating correctly showing message Enter Valid Date, but when I enter 5 digits 77777 it is accepting the value and converting it to 12/10/2112 value and not showing any error message.
Here all I want to do is I want to validate the cell value to any date format mm/dd/yyyy.
VS 2008 Get Real System Date To Do Validation
Feb 8, 2010How can I ensure that my program function can only run once a time per day? I wonder how did those commercial software that did something like 30 times/days trial. How did they store the value in the sense that altering the system date and time would not prolong the trial. Currently I am thinking of validating the date through internet time since it can't be alter by user. After which, I will store the value online. However, this does not seems to be feasible if its an offline application. I wonder is the any other better way to do it?
View 22 RepliesMasked TextBox Validation - Today And Tomorrow Date?
Jun 9, 2011The user can only input today's date and tomorrow's date. How can I get it? Example valid dates are: Today's date: March 01, 2011 and tomorrow's date: March 02, 2011 if the dates are not valid then error.
Dim DD As String : Dim MM As String : Dim YYYY As String
Dim DDMMYYY As String
DD = Now.Day : MM = Now.Month : YYYY = Now.Year
If DD.Length = 1 Then DD = 0 & DD
If MM.Length = 1 Then MM = 0 & MM
DDMMYYY = MM & "/" & DD & "/" & YYYY
MskTxtBoxDate.Text = DDMMYYY
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"
Date Format From Date Time Picker?
Dec 22, 2011I have a date entered in from at DateTimePicker (dtDate.Value) and am writing it to an access database. This insert code works without the date, but not with it.
"INSERT INTO Deads (Location, LotNo, Date, Head, Cause, BookCost, JournalEntry, Pasture) "
InsertRow(StrComp, InsertSQL)
[code].....
Format Date Time : Cannot Convert To Date
Dec 2, 2009cant seem to get this to work , I am tryin gto get the date from last week exactly 7 days ago i get an error when i try this "cannot convert to date "
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim dateTimeInfo As Date = Date.Now
MessageBox.Show(dateTimeInfo.Date.ToString(Format(DateAdd("", -7, "yyyyMMdd"))))
txtFileDate.Text = ""
End Sub
Getting Date Into A Label Every Time Date Is Changed
Jan 25, 2011I am using this datetimepicker by Trent Richardson, I can get the date time picker to work, however after the date is changed i need it to be put into a hidden asp.net control that is in an update panel. So how can i make it so everytime the user changes the date and time it is sent to a label. url...
View 1 Replies