Conversion Of Date Into Hour/minute/second Incredibly Slow
Apr 29, 2011
I need a date cyclically convert into its components (hour, minute, second). The following code does this quite well.
Dim time_hour As Integer
Dim time_minute As Integer
Dim time_second As Integer
[Code]....
However, I have found this a performance problem. I have examined the source code with a profiler, and the conversion of Now into its components seems to be incredibly slow. Is there a quick way to the current time to disassemble into its component parts?
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Apr 24, 2009
i have the decimal 0,22727272727272727272727272727273 and i like to convert it to hour, minute, second, the zero represent hour.
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Jun 12, 2012
I need scheduler for my program that runs something every X day, hour or minute. And user can set that how long to wait until it run again.
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Mar 4, 2011
how to show up datetimepicker value in which hour & minute only to display. e.g. (10:00 AM) There's no seconds to display.
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Nov 20, 2011
i need to add a increment hour and increment min button, here is the code :my ? is this how do i make the two new buttons work like code wise ?? this is attempt like 5 everytime ive played with the code and added buttons ive crashed the program?
Public Class TimeTest
Dim time As New Time() ' construct Time with zero arguments
' invoked when user clicks the Add 1 to Second button
Private Sub addSecondButton_Click(ByVal sender As System.Object,
[code]....
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Jan 23, 2009
I have a problem with a application, when i start the program the speed is ok.after 1 hour of use the prohram go very slow.
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Apr 8, 2010
Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
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May 7, 2009
Is there any way to check date and hour without using two Timers?
Right now i have this for the date:
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Timer1.Stop()
[Code]....
PS (again): I thought about setting the Timer1 interval to 60000miliseconds, so that it would check the time everysingle step of the way (or maybe 10 minutes...), but I don't want the app to lag, so... How can i implement a Background Worker?
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Nov 25, 2011
I have a DateTimePicker,whose
dateTimePicker1.Format = Time
dateTimePicker1.ShowUpDown = True
But now i want only the hour part from the Date Time Picker as i have to compare the hours with some logic in my Database.
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Nov 25, 2011
I have a DateTimePicker,whose dateTimePicker1.Format = Time dateTimePicker1.ShowUpDown = True But now i want only the hour part from the Date Time Picker as i have to compare the hours with some logic in my Database.
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Dec 28, 2011
changing the rest of the date?I mean... I have this...:vb 'current date at my gameDim time As Date = #9/29/0001 12:23:00 PM# 'another date variableDim period_lunch as date = #1:00:00 PM# 'and later at a Sub, I try to do this...time.Hour = period_lunch.Hour 'and I get an error saying time.Hour is read only I only want to set the hour to 1:00 PM of the SAME day of the time variable, not the one contained in period_lunch, that is. And the only built in procedures I see in the date object are for adding or subtracting WHOLE hours, minutes, etc. I will need to compare both dates, subtracting the difference and adding it to the former?
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May 6, 2009
I wrote a VB.NET Windows Service, which works fine. I have only one issue with it. I want the service to execute on the half hour and top of the hour marks (e.g. 9:00, 9:30, 10:00, 10:30, 11:00, etc etc etc). I am using the following code:
Protected Overrides Sub OnStart(ByVal args() As String)
' Add code here to start your service. This method should set things
' in motion so your service can do its work.
[CODE]...
This code works, however, if the service starts at, say, 10:15, then it executes at 10:15, 10:45, 11:15, 11:45. How do I make it so it always executes on the 30 minute and top of the hour marks?
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Jan 16, 2012
how I can ensure that conversion of a date to a string and a string to a date will give me the same date format.
For example:
Code:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim d As Date = Date.Now
[code].....
I'm actually only interested in the date part as the label text shows so f is more than I want.But also, the day and month are reversed.
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Jun 12, 2012
So let's say I have 1400, I want to convert it into 2:00PM I tried the following:Dim convertedTime As String = DateTime.ParseExact(theTime,"HHmm", Nothing)
And it would give me this: 6/12/2012 02:00:00 PM
I do not want the date part, neither do I need the seconds. All I need is 2:00PM
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Oct 28, 2010
I have a bunch of events with values (how many people went through a doorway). Each event is associated with a Date. There is no fixed period to the events .If no one comes through the door, no event is generated, but often multiple people can go through at once, so the value can be greater than one.
Sometimes events are minutes apart for a time, sometimes there is gaps of a few hours,
Using the Date class, is there an easy way to average my values over periods of time?
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Mar 25, 2011
when i am trying this Date.Compare(Format(DateTimePicker1.Value.Date, "dd/MM/yyyy"), Convert.ToDateTime(dr(1))) < 0 it gives an error message as "Conversion from string "23/06/2011" to type 'Date' is not valid."where dr(1) is database field in text format as 29/3/2011 (dd/mm/yyyy) .
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Mar 26, 2011
I'm currently attempting to make on ORPG using Visual Basic 2008. It's a big project, I know. I've currently made a working map editor and the basics of a game client(movement with physics, etc.). Unfortunately, when the form's size is larger(in the actual game client), the form becomes REALLY slow. The larger the form is, the slower it runs. The smaller it is, the faster it runs... And I also have horrible lag in my map editor. So horrible it's impossible to be productive. It has nothing to do with the form's size this time.
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Nov 27, 2010
How is it possible to deal with incredibly long (large) numbers in vb.net?I am working on Problem 25 in Project Euler, and my program cannot handle these computations.Is there a data type that can handle thousands of digits?
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Mar 17, 2012
I have spent the last 20 plus hours trying to parse a incredibly small XML file with Xpath. I understand that it is a ready only, extremely fast way to pull values out of an xml file. Here is the string I am working with. I have a 3rd party function that returns results, based on these xml results i would like to retrieve certain vaules.
[Code]...
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Mar 14, 2012
DateAdd(mm, - 7*3, getdate()) DateAdd(ss, - 1, getdate()) Need to convert to vb.net
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Jan 31, 2011
i want to convert numeric value into date format and vice versa.since i'm new in vb.net.will you plz help me to know about the process of convertion?
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Aug 15, 2009
I did a clean install and tried to get the project running again. The code ... AlteredDate = SelectedDay & "/" & SelectedMonth & "/" & SelectedYear would always work defaulting to DD/MM/YYYY before the clean install. The program now runs an error "Conversion from string "13/8/2009" to type Date is not valid.. How do I change the default back to DD MM YYYY or format it to that?
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Dec 3, 2008
I have a date that is in string format and I want to put it in a datetime field. I tried
[Code]...
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Jun 28, 2011
i am trying to put my string that i receive in yyyy/mm/dd format in my label.i am how ever getting the following error..Conversion from string "20110627" to type 'Date' is not valid.[code]
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Aug 2, 2010
I have a string in the format of 20100730 which i need to convert to UK format of 30/07/2010.
When i try to set 20100730 as a date it says it is not valid. Is there another way i can do this?
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May 2, 2011
How to convert an excel serial date as 39051,4387847222 in a datetime as 30/11/06 10:31:51 2549
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Apr 25, 2012
In my windows application i am converting the system date format using ow.date.tostring("dd-MMM-yyyy")it is converting in some systems which have system date format mm/dd/yyyy otherwise i am getting errorso for this i am changing the date format in system regional settings in clients systems manuallyi want to convert date format without changing the date format means if the system date format what ever it may be the date format have to convert
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Aug 30, 2011
i have a problem with my Date/Time. i user comboboxes for the date.when i save the data there's a mesage show like this: This is my code for the date:
[Code]...
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Apr 8, 2011
I am encountering an error in the following statement:For i As Integer = 0 To dtAccess.Rows.Count - 1 If dtAccess.Rows(i).Item("YMD") = dateval then dtAccess is a datatable where the column YMD is of type string.dateval is a variable of type date. Now here is the anomaly. The first ten rows works fine during the loop execution. However when the 11th row is encounter I get the following error:"Conversion from type string to date is not valid." My question is that if it is not valid then why it worked for the first ten rows? My second question is what can I do to overcome the error?
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Jun 3, 2012
I am trying to retrieve and display data from MySQL database to vb.net console window using the following code
myconnection = New MySqlConnection("Server=localhost;username=root;password=;database=agro-system;")
myconnection.Open()
cmd1 = New MySqlCommand("select * from sales", myconnection)
myreader = cmd1.ExecuteReader()
While myreader.Read()
[Code] .....
But I get the following error:
Unable to convert MySQL date/time value to System.DateTime
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