In my application i have to create an excel report of records. everyday at a specified time the report of records added from last 24 hrs has to be generated automatically. i am unable to compare the dates.
View 1 RepliesI try to compare Datetime.Now with a Datetime variable I set, using the Datetime.CompareTo() method. I use a timer to compare these every second and display the result, but as the current time approaches the time I set, the result changes from 1 to -1, but never 0, which means these two are never equal. I'm suspecting the Datetime structure contains milliseconds?
View 7 RepliesWe would like to compare a date from the db with current date. Here is what I have tried so far: 'Obtain current date Dim curdate As String = Now.ToString("yyyy") 'Now compare curdate with date from db called eventdate. Event date is of dateTime datatype. If drv("eventdate").ToString = "" And Year(drv("eventdate").ToString) = curdate Then
[Code]...
I have a Date variable startdt and a String variable hdnsdate. Suppose if startdt has the value in the form 3/1/2012 and hdnsdate has the value in the form 03/01/2012. Than how can i compare that these two dates are equal in vb.net. In if condition of my program i want to do this check. In case the two dates match move out of if loop otherwise go into the if loop. E.g A sample in C# what exactly i want.
[Code]....
I have an aspx page that has link button that accesses a table from a database.
Each link will pull different results from that database.
Every link however needs to compare dates.
i am having problems figuring out how to pull the correct data.
For Example one of the links, pulls data from the database that is 3 months old or less.
However the SQL statment i use seems to pull all records that are greaters than the days. e.g.
SQL Table
Table Name(dateList)
-------------
no | dates
[Code].....
I have a GridView with two Date columns which are EditTemplates. How do I compare the 2 dates?
View 3 RepliesI'm trying to Parse dates entered into a TextBox into a DateTime value but I keep getting an exception in the TryParseExact method. What I'm trying to do is: DateTime.TryParseExact(tbAddDate.Text.Trim, "yyMMdd", New CultureInfo("sv-SE"), DateTimeStyles.None, row.Date)
This throws an InvalidCastException with the message "Conversion from type 'DBNull' to type 'Date' is not valid." I realize what is happening is that it's trying to set row.Date to DBNull which is not a valid value for a DateTime. What I don't understand is why it's trying to do this, as the documentation states that it should be set to MinValue and not DBNull.
As a sidenote, I know that I can get around a lot of these problems by using a DateTimePicker but the customer feels that they are very clunky as it's not possible to enter the dates directly with the keyboard.
The problem that i have right now is that i don't really know how to compare two dates.What i am actually trying to do is to compare the Date Today with vbSunday, vbMonday etc using if. But something goes wrong. As for an example:
If Date.Today.Day = vbSunday Then
{
}
My compare validator is firing always even if it is greater and even if it is less.
<tr>
<td>
Selection Start Date:
</td>
<td>
<asp:TextBox ID="SelectionStartDateTextBox" runat="server"
[Code]...
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 RepliesOK... I'm using Image Magick to go through files and create in effect thumbnail version of each of them into another folder.Now, I don't want to convert files if they've already been done, so I'm wondering if I can compare the Modified and Created dates of the original and thumbnail, and only convert if the source files Modified or Created is more recent?Is this a safe approach? Note: I've got the archive flag method working, but using the dates seems safer!?
View 4 RepliesBasically I'm just trying to see if the date/time of files have changed on files.So I've got code something like this:-
Dim fi_source_CreationTime As DateTime = fi.CreationTime
Dim file_info_DateCreated As String = '** LOADED from a file **
If (fi_source_CreationTime = CDate(file_info_DateCreated)) Then
[code]....
I need to validate different date's with some javascript(jquery).I have a textbox with, the inputmask from jquery The mask that i use is "d/m/y".Now i have set up a CustomValidator function to validate the date.I need 2 functions. One to check if the given date is greater then 18 years ago. You must be older then 18 year.ne function to check if the date is not in the future. It can only in the past.
The function are like
function OlderThen18(source, args) {
}
[code].....
[Code]in my program, i've created a function wherein i will get the min timeentry for type 0 and it depends on the current date. so heres how it goes [Code] what should i put as the value of time entry? i tried format(var,"m") but no success. in the code i post above it also does not work. i get this error "The conversion of a varchar data type to a datetime data type resulted in an out-of-range value." how can i match the value in the database and the current date so that i can retrieve a value?
View 2 RepliesI want to compare just the date part (and Not the time) of two VB.NET Date objects.Is there a way to do that?
View 5 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 want to filter my results with respect to date and time....I have date stored in a separate field which is of datetime data type...Another field stores Time value but as it is a datetime data type so it stores current system date along with the entered time. Now when I filter results using date then it runs well and shows the results between specific period like between dates from 12/10/2011 and 12/15/2011...But when I want to show results with respect to time it doesn't show any results...
I am using dataadapter and dataset for retrieving records from the sql server database... Please tell me the solution for comparing time value taken from the textbox with the datetime value stored in the database so that i get results between specific time like between 12:00 pm and 6:00 pm.
Actually I have datetime value stored in the database. What I am taking from the textbox is a time value. I want to extract those results from the database which are between the given time value....To be more concise, my application is a booking system for a sports club and provides an option to view alreaady made bookings.. Here i offer two options either to view all bookings for a specific game or to filter bookings. In filter bookings one option is to filter through date and time...Date option is running okay but problem lies in time part...I provide two times but unable to view bookings between them...
My code is:
Dim prmtimefrom As New SqlParameter("@booking_time", SqlDbType.DateTime)
prmtimefrom.Value = TextBox3.Text
Dim prmtimeto As New SqlParameter("@booking_tim", SqlDbType.DateTime)
prmtimeto.Value = TextBox4.Text
[code]....
how to manipulate the dates to determine which date will be 30 days more then the datetime control I have on my form. i need to take the chosen date from the DateTime control, and determine what date it will be in 30 days. Eventually I will use this process to search through the database to print monthly reports.
View 4 RepliesI would like to compare the month of a date with datetime.now, when the datetime.now reaches a month beyond the given date to play a sound. I am novice to this.
View 2 Repliesam using sql 2005 and vb 2008.i need to compare dates and select matching records betweem a selected date range.say records between 11/13/2010 and 11/20/2010.e.thing is working ok except when it comes to selecting dates between 11/1/2010 and 11/9/2010.this is happening because when am retrieving the dates from database,its being retrieved in the format 11/01/2010 instead of 11/1/2010 and so it reports no records found,and knowing the limits of sql 2005 this is the only way i can retrieve the date. [code]
View 7 RepliesI 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]....
Im trying to retrieve some rows from sql server having datetime column that matches the given value of the textbox in a form. The tables datetime column name is "DepDateDepositDate" and the textbox.text was formatted as longdate eg("Tuesday, April 06, 2010") I have this code below but it seems its not retrieving the data that i wanted.
Dim daBnkBok = New SqlDataAdapter("Select * From DepositRef Where Convert(varchar,DepDateDepositDate, 112) = '" & Convert.ToDateTime(clsGlobals.BankBook.bbDepDate.Text).Date & "' ", bbcons)
I'm trying to write a bit of code to communicate with an RS232 coin mech.The problem i have is that the coin mech works fine when used with Putty or Hyperterm but i do not appear to be able to 'activate' the serial port with my code.[code...]
When i open the hypertem or putty session the coinmech's active light immediatly comes on and i am able to send and recieve data. When the port is opened with the code nothing happens.
I need to display on my datagridview the data from MYSQL db, but I'm having a problem on a field which is in DATE format in mysql
cmd.CommandText = "SELECT * FROM tbl_user_log"
cmd.Connection = sqlcon
dr = cmd.ExecuteReader
[code].....
I would like to compare two multiline textboxes, and display the diffeences of the second one based on the first. Just spelling check is required..
View 2 RepliesI have 2 different files containing data in a CSV in following format:
CSV1
HTML
ID:,Descp
498 ,1010
[Code....
I am wondering if it is recommended to use Vb.Net Dictionary to load these files and compare and report only the entries that mismatch into datagrid..
note the entries in CSV2 - 625 & 778 are different from CSV1 and are to be loaded to the datagrid..
I have got a MySQL database that has got some dates stored in a Date format (YYYY-MM-DD) however when i try and import the data i get an error saying: "Unable to convert MySQL date/time value to System.DateTime"
[Code]...
I am using VB2008 Express and am curious how to send a command via RS232 communications. The string that I need to send is 02h PON 03h. The start and end bits are 02h and 03h.
How can I convert 02h and 03h to its ascii form. In hyperterminal, I use the sequence {(hold)ALT 0 0 2} on the number pad to send the start bit.
I am using this code currently without the start and end bits
Code:
I have a MyObject; myObjects as List(Of MyObject) and a delegate Comparison(Of MyObject) that uses a lot of comparison functions (ByA, ByB, ByC etc) Ã la:
Shared Function CompareMyObjectsByName(x As MyObject, y As MyObject) As Integer
Return x.Name.CompareTo(y.Name)
End Function
[Code].....
I have two dates. [code] How to print all dates between these two dates in one listbox, for example: [code]
View 8 Replies