I converted some c# code to vb.net and the converter.telerik.com turned this: i--; into this: System.Math.Max(System.Threading.Interlocked.Decrement(i), i + 1)Whats up with all the fancy-ness?
View 5 Replies
the Threading.Interlocked class provides; I don't understand, though, why the Add function only offers two overloads: one for Integers, another for Longs. Why not Doubles, or any other numeric type for that matter?Clearly, the intended method for changing a Double is CompareExchange; I am GUESSING this is because modifying a Double is a more complex operation than modifying an Integer.
View 4 RepliesI have the following code. My program loads 20 pictures in one panel and each pictures has for the moment like 500 Kb, but in the future they shall have like 2~6 Mb.When I use this part of code, my program that uses only 6 Mb of memory, but jumpes at 202 Mb when pics are loaded. I need a method to resize or make them thumbnail or something to reduce the memory.I don't know for the moment how to use the System.Threading, but I want to know if it shall help my program, if not, then help me replace parts of my code.Private Sub PanelPictures(ByVal picsoriz As Integer) ' picoriz represents how many pictures should the panel have on each row (it's set at 5 pictures per line/row) [code]
View 4 RepliesI'm developing an adding for office powerpoint application.I'm trying to display a description of the object(Customized object) currently dropped on the powerpoint slide in design mode(Design mode of the powerpoint).When i click on my addin the related object description will be displayed on a tabbed window as the first tabpage.
There is a button on the tab page, and when i click on it i need the description to get copied to windows clipboard.I tried this using clipboardclass it throws the following exception, System.Threading.ThreadstateException {"Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it."}
Code for clipboard:
Clipboard.Clear()
Clipboard.SetText(lblObjectID.Text)
I searched the net for a solution and got couple of answers like, Put [STAThread] in the main function Thread.CurrentThread.SetApartmentState(ApartmentState.STA) Immediately before your call to SetDataObject.
But I'm not sure where to put the 1st one and the 2nd option didn't work.
I have used system.timers.timer to watch several folders and move files in my windows service. But the timer event stops now and then. I have read that it is better to use system.threading.timer in services.This is my system.timers.timer
Private Timer As New System.Timers.Timer
AddHandler Timer.Elapsed, New System.Timers.ElapsedEventHandler(AddressOf Me.Timer_Elapsed)
Timer.Interval = 4000
Timer.Start()
[code]....
How do this code look like in system.threading.timer?How do i start and stop the timer using threading? That is very important because i stop the timer when it comes to the elapsed event and when the code har run it starts the timer again!
I have the below code in my ASP.net page:
Response.StatusCode = 404
Response.Write(strResult)
Response.End()
The code above throws "An exception of type 'System.Threading.ThreadAbortException' occurred and was caught."
I would like to discover the system.threading namespace. I look in the References -> Add -> .Net(tab) to add a reference to my project, but it is not listed in the .net references. I work with framework 3.5 service pack 1. How can I install this namespace?
View 4 RepliesI'm just looking for other people's thoughts and opinions on the way I have done something.I have a console application which needs to connect to various computers and reset the local admin password on each one. I got it all working but then decided that as there are a lot of PCs, it would be a good idea to use the thread pool to do a few at the same time.The problem is, I need this program to be run without any human interaction - so I cant just use ThreadPool.QueueUserWorkItem and pass it all of the computers to connect to, because then the program would exit after it had called QueueUserWorkItem for each one because there is nothing left for it to do. I cant stick a Console.ReadLine in there because like I said, it needs to be run automatically without anyone typing anything.
View 1 RepliesI have this little application that is using a System.Threading.Thread.Sleep, application runs great but Windows thinks the application is not responding even though it is running.
[Code]...
What is the difference between creating a thead using BackgroundWorker and creating a thread using System.Threading.Thread?
View 2 RepliesI am trying to send more than 1000 emails by using gmail host.It was sending only 158 or 160.I am serching for solution in google.In google I found some articles which has described that we cant send more than 200 mails by using gmail host and some articles said we can send more emails using Thread class.I am using vb.net(visual studio 2005) for developing sites.
View 6 RepliesWhat is the difference in using: BackgroundWorker1 or System.Threading.Thread
View 3 RepliesTrying to get System.Threading.Timer to work!! I am converting a small form based application to run as a services, The app just runs an monitors a folder and then when it finds a file to does some work on it. Having changed the form.timer to threading.timmer - The timer stopps working after a while. Below is a simple test services - when you look in to the text file it stops after approx 130 entries
[Code]...
i trying to make ping system with port using multi-threading.. but seems i got error on label.. i still wonder why suddenly label become a problem..
[Code]...
Multi threading in vb.net, in one of our program I provided an automatic error notification system that gives alert to my email when an exception error is occurred. The error notification includes the name of the form, the exception error details, the event name and the screenshot of the software during that particular instant.
View 6 RepliesI am a newbie, but I am unable to get this code working. FileSweeper is supposed to start a timmer that triggers fileCopy on a web server. fileSweeoer is triggered by global.asax.ileCopy then will copy the filWould it make any difference if this was a class running on a web server?
Imports Microsoft.VisualBasic
Imports System
Imports System.Threading
[code].....
Trying to use the domainUpDown button. After you insert the button and double click on it you get:
Private Sub DomainUpDown1_SelectedItemChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DomainUpDown1.SelectedItemChanged
End Sub
I know there is an "instance" for each of the up or down button in the domainUpDown tool. I just wanted to know how to increment one for the up button and decrement one for the down each time it is pressed.
I would like a program that will use a NumericUpDown button:
-when the up arrow is clicked, the number in the NumericUpDown box will increment by 2 -when the down arrow is clicked, the number in the NumericUpDown box will decrement by -2
I got the button inserted and double clicked on it to get the NumericUpDown1_ValueChanged but am stuck there. I looked thru the MSDN site
I want to have My.Settings.Delay in seconds not milliseconds adding the 000 for the user. I tried My.Settings.Delay + 0 + 0 + 0. but can't sort how to do this.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim var As Integer
Dim startVal As Integer
[code]....
I have used timers in .Net for a long time now an never had this problem.Start timer to fire every 10 seconds that reads an object and updates the UI using a delegate.This works great until the form is minimized several times, then the timer thread seems to vanish.Anyone come across this before?
Obviously I can roll my own using a thread directly and sleeping it, however this seems like reinventing the wheel when a threading timer class exists already.
Code: Private Sub m_Tmr_Tick(ByVal state As Object)
[code].....
I cant get System.Threading.Thread.Sleep to work..[code]
View 2 Repliesi have a datagridview which have 3 columns, two button columns increase or decrease, 3rd displays the value increased or decreased from button. i have datagridview_CellContentClik behind button columns. The problem is increase in value on pressing button is very slow. i mean if i press button quickly the value should increase quickly but its the same slow pace for increasing or decreasing value on pressing button.
View 2 RepliesI have a string in which for sure there is a date in the following format: YYYYMMDD. So, to identify 14 October 2009 I'll find 20091014.Having this string, how can I format into System.Threading.Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern?
View 4 RepliesCurrently I'm using System.Threading.Thread.Sleep(5000) to let my app pause/sleep for some time. This works great but I can't open my app anymore when it's sleeping and it uses about 25% of my CPU. I guess there must be a better way to do this. I also tried using a timer but that didn't work out to well for me..
View 5 RepliesI've been trying to use "System.Threading.Thread.Sleep(15)" as the delay code but if freeze the form. I used this "Location.Refresh()" where location is the name of the form, but it didn't give me what I need. This code is going to work on a ProgressBar while typing and the value of the progress bar change while typing. The progress bar jumps to the new value and I want it to move. So I thought about puting it in a "For ... Loop" but the whole form freezes.
[Code]...
I have 5 Picture Boxes, each picture box has an image but all 5 of them has a visibility of false. I have a button, when clicked will show 5 of the images. But showing the 5 images with a delay. So it's going to be
[Code]...
I got this Error. below is my code.
GenerateTheList is function.Need help
Private Sub buttGenerate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttGenerate.Click
Dim thread1 As New Thread(New ThreadStart(GenerateTheList))
thread1.Start()
End Sub
I am new to the MSDN forums and was wondering if you could kindly help me with a learning project.I have created a calculator with a simple addition function button and was wondering if the method I used to create it is efficient and how I may go about adding additional functions such as a minus function.Will my current code allow m to implement a minus, multiplication, or division function easily?How do I add a minus function and would adding a multiplication or division function? Also would can I use the same global variables to do this.[code]
View 1 RepliesI have created a table with the following fields
loan_id (PK)
loan_date
loan_return_date
loan_user (FK)
i have set the loan_id column to increment in steps of 1, but when i add a column in visual studio 2008 express it auto increments in minus steps -1 -2 -3. it increments in positive numbers?
I have 2 datetimepickers. I want one to display the current time and the other to display the time one hour ago: So far I can getb them both to display the current time:
Code:
Dim TimeInterval As Integer = 60
Private Sub SustomizeGraph_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TimeTo_dtp.CustomFormat = "HH:00"
[code]....
