I am doing a comparison of the date in my db and the date in my datetimepicker.I am using the following
While reader.Read()
Me.dtpGeboorteDatum.Text <> reader("GeboorteDatum").ToString Then
The value of me.dtpGeboortedatum.text is "1-1-1900 0:00:00"
[code]....
How can I get both dates the same format so I can do the comparison?
I would like to compare two dates in this format dd mmm yyyy, compare validators wont work because of the format and custom validator is server side validation. I would like to have a clinet side validation.
View 2 RepliesMy regional settings are UK standard Windows XP. When I ecexuted FileSystemObject.DateCreated I get #1/25/2010 1:57:36 PM# I would expect 25/1/2010 13:57:36. Can anyone explain what is going wrong?
View 6 RepliesI have a field in my database that holds dates as strings in this format: dd/MM/yyyy Now I want to load then into a var as dates vb.net Dim dte as date I am having problems with the format. Vb doesn't recognize my date format as a date when I use this for expample:
vb.net
Dim strDate as string = "22/05/2010"
Dim dte as date
dte = CDate(strDate)
I am trying to create a textbox that only allows dates in like mm/dd/yyyy format. So if a user types in a date like 2010/11/02, an error would happen. But if they type it in this format 01/02/2010, then it works fine. Is this possible?
View 2 RepliesDoes anyone have a regurlar expression available which only accepts dates in the format dd/mm/yy but also has strict checking to make sure that the date is valid, including leap year support?
I am coding in vb.net and am struggling to work this one out.
I have a datetimepicker, i am displaying short date in dd/mm/yyyy format... how do i store this value in ms sql server 2005 datatable with a field defined as smalldatetime.... ? If I simply save it, it is giving some error.....
View 1 RepliesI need to calculate and display the date and time 1/2 way between 2 given dateTimes. On my form i have 3 DateTimePicker tools. here is my code on the button1 click event.[code]i have tried converting to ticks and then subtracting from the difference to no avail (read only property).
View 6 RepliesI am trying to do a comparison between a date in my db and a date in a textbox.I am using the following
CDate(Me.txtVrijeDatum01.Text).Date <> CDate(reader("VrijDatumVeld01")).Date
It works pretty well except when the textbox is empty or the value in the db is NULL.
For the past day or so, I have been trying to compare values in my SQL server against an actual calendar. I have had mixed luck with this and I have exhausted my limited knowledge. I am looking for a shove in the right direction.
Background:Right now, I have a program that writes a record to a database when the program completes successfully. This time stamp has both the date and time on the SQL box. I want to grab that information and compare it against the basic calendar. I have attached a picture that should help explain things. This is just my test app,
[Code]...
I am trying to pull data that falls between two dates: I have a dataset that has the following SQL. This I have on my form as a DataGridView. I then have two DTPs that the user would use to select start and end dates.
SELECT JobNumber , DeliveryDate FROM vJobs WHERE (DeliveryDate BETWEEN ? AND ?)
When clicking a filter button I have the following code that refreshes the dataset and DataGridView
Me.VJobsTableAdapter.FillByFilter(Me.DsJobs.vJobs, dtpDateFrom.Value.Date, dtpDateto.Value.Date)
But no data is displayed
I've got a DataGridView that has a column that will show dates/times this column needs to be sortable so I use this to tell the DGV that it is storing Date type objects (so that sorting works fine automatically):[code]Now the problem is that there will be some records shown in this DGV that do not have a value for this date column. How can I display this? If I dont set a value for that column or I set it to Nothing then the cell just shows the minimum date value (01/01/1601).Oh and this DGV is not using data binding if that makes any difference. Perhaps this might be a good time for me to investigate this data binding lark though if that will help with this issue? I'm sure I recall seeing something about being able to use one value but display another value when you use data binding thats all.
View 6 RepliesI have two dates. [code] How to print all dates between these two dates in one listbox, for example: [code]
View 8 Replieshave a table in SQL Server Ex 2005 containing a column called "geboortedatum" (datetime)When I open the table the date is shown like this: "31-12-2011 0:00:00".When I use the query designer and execute the query select geboortedatum from table: the date is shown like: "2011-12-31 0:00:00".he problem is that I want to use the datetimepicker in VB.NET to compare the date in a SQL statement that looks like this:
strZoekGeboorteDatum = String.Format("AND M.GeboorteDatum > " & Me.dtpZoekMedewerkerGebDatVan.Value
But probably the comparison is:
[code].....
I am reading dates from a table in a database to display in a DataGridView column that is formatted as a date. The problem is that when the value is null in the database my program errors out because it cant convert the value to a date. How do you guys handle this? *Edit: If I set the value of my date variable to "Nothing" it displays as "1/1/0001" in my DataGridView, and I would like the cell to be empty for the null dates.
View 24 Replieshow to disable the datetimepicker dates in the future and also all the weekend dates but i am unable to find any! Only thing i can find is ASP.net code.
View 1 RepliesI have two dates, a creation date and an expiry date. I want to find out how many years and months (not days unless it is only days) between them.
I've got two dates:
Dim start_time = "12.5.2011"
Dim end_time = "15.11.2014"
I want it to say (3 Years, 6 Months) etc
I have now started posting to a MySQL database created by someone else. I have no ability to change the table structure.Two questions:
1) There is a date field and a time field that loosely tracks the last edit date and time. Both are fields set up as DateTime in the database. The date field always has the proper date but the date and time portion shows as
2011-11-27 00:00:00
However, the time field shows as
1899-12-30 23:16:58.
When I am updating with the following code
strSQLCmd.Parameters.AddWithValue("@EditDate", Date.Now)
strSQLCmd.Parameters.AddWithValue("@EditTime", TimeOfDay)
The date field displays
2011-11-27 23:40:26
and the time field displays
0001-01-01 23:40:26
I'm not sure how to format the date field without time and the time field with Dec 30 1899.Question 2) I will be adding some tables and will be wanting to track date and time of first entry as well as date and time of last edit. (this may have been better posted in the Database forum, if so, sorry)
For those of you who have done this before, would you mind sharing best practises? I am wondering why would you use two fields, one for date and one for time, when the field is a date/time field to begin with. I've seen this before in another database as well. I'm just trying to work out the logic here.
I am using vb.net2010.
I am currently writing a bit of software for myself and need guidance.
I have a datagridview on a form with a date column. (column0)
I am trying to sort this by date desending but it will only sort by the day (dd) and not the whole date (dd/mm/yyyy) which leaves the months unsorted.
(example of output):
#1 - 01/03/2012
#2 - 02/01/2010
#3 - 03/02/2011
[code].....
I need to sort the values of my listbox to have the latest date on top plus some text. here is the code I'm using:
[Code]...
Say the user specifies these two dates....
Start Date: 2010-12-05
End Date: 2011-01-15
If I select December 2010 I should get the folllowing
startdate = 2010-12-05
enddate = 2010-12-31
Select January 2011 then
startdate = 2011-01-01
enddate = 2011-01-15
Should I subtract dates? How can I get the start and enddate for the current month/year based on the overall start and end date.I'm coding in vb.net.
I'm using two datetimepicker controls to set the start and end dates for a range of dates I'm searching for.I want to make sure that the start date selected is not greater than the end date. This code works, but it runs the messagebox prompt twice for some reason. I've tried to ignore it from doing this, but it's not working. Can someone tell me what's wrong?
Private Sub dtpStart_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles dtpStart.ValueChanged
[Code]...
I try to make a WFA for filling, reading etc. to a database. I want to compare 2 dates (actually 1 date is changed by 42 days) that are chosen by a user through a datetimepicker. After comparing the 2 dates the "newest" date has to show up in a non editable textbox. This Is my code (of course I have 2 subs for the datetimepickers as well).
Private Sub AwbdatumTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AwbdatumTextBox.TextChanged
Dim DatumbinnenkomstDateTimePicker As DateTime
[code]....
I have one more problem with MonthControl.And when I bold some dates the program doesn't show bold dates on month calendar.When I move on next or previous month and get back to currently month the program normal displays bold dates. What's the problem?
View 22 Repliesit's just for a program registration. i would store all of the registration codes in the access database, then export it to XML, then upload it to my web host. I would then somehow connect it to my Visual Basics login form (Which I have already made). If this can't be done, having them register through the form and having all the allowed codes on the internet (So i can easily edit them)!
View 5 RepliesI'm creating a simple personal calculator, it only has 1 textbox and 1 button.my code is:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = Val(TextBox1.Text) * 6.2
End Sub
OK I have been trying to find a way of saving images in .TGA format I know it's not supported directly so I have been doing some searching and found this [URL] I added the reference and checked to use the name or whatever under that for the Devil dll and I added both the DevIL.NET.dll and the DevIL.NET2.dll files to the references and then I even tried putting imports.DevIL at the top of my code but it still wouldn't work I fallowed the examples from the site and it gives me an error under the word DevIL and is says something like namespace is invalid or something like that
[Code]...
I've got a string that looks like this:
00:02:49.5350000
h m s
h=hour
m=minute
s=seconds
I would like to format that string so it looks like this:
2:49
m s
Is there any way i can do this easily?
What is the correct format of using keypress in VB 2010. I have tried the following code to use ESC as shortcut to closing the form but its not working: [Code]
View 4 RepliesI have the following function in my program:
Format(Now(), "yMMdd" & "hhmm")
in 2009 it produces 912311200 for 12/31/2009 12:00
in 2010 it produces 1001011200 for 01/01/2010 12:00
It is giving me a 2 digit year. How do I get a 1 digit year?