Events Handler - Messages In Queue
Apr 13, 2010
I have question about the firing of events in vb. Lets say if I have timer that fires every 10 seconds and then I also have eventhandler that is listening to some other event (like message arrived in queue and now event fires to process it). Then how does vb handles them if the program is currently processing Timer1 and message arrive event fires or vice versa? Does it complete the current processing and then jump to the next event or just switch in the middle to the new event and then finishes that and then resumes back to the first one?
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Nov 10, 2009
I'm trying to improve performance of an application by introducing threading (see my earlier question). I have filled a Queue(of String) with XML messages and I now want to setup two threads to post these messages to a webserver). This process needs to ensure that each message is only posted once. Would a BackgroundWorker (or two) be suitable for this?
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Mar 10, 2010
I am working on fax component that manage some operation of XP fax service by using VB.Net and using FXSCOMEXLIB.DLL, I want to register events by fax queue status (job added, changed, removed, ... etc.), I am reading the article on this link: [URL] but the events not work (not called).
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Jul 19, 2010
Is it possible in VB.NET to easily write an event handler that will handle every event that fires? I'm wondering if one could make a logging system using something like this.I'm wanting to do something like (in pseudocode):
Public Sub eventHandledEvent(ByVal sender As Object, ByVal e As EventArgs)
File.Write(sender.EventName)
End Sub
I realize it would be slow, but it wouldn't be for a production system, only as a development tool.
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Dec 21, 2010
I have a very long running process that I start in a thread. This raises events with messages to say what it is doing. How can I update a label on screen with these messages? (The label is in an update panel if that makes it easier).
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May 12, 2011
I have a test class with an implementation similar to this:
public class MyObject Public Event testEvent(ByVal duh As Boolean)
Public Sub New()
'some code here
End Sub
[Code]...
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Apr 27, 2011
I am attempting to test that the event handlers between an interface and controller are wired properly. The system is set up like the example below:
[Code]...
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Dec 10, 2011
I want to use spy++ or Winspector But from what i Read they Dont work on windows 7 64bit Correct ? Im trying to read WM_COMMAND Messages from a App.And whenever i Select 'Log Messages' And find the windows etc.Nothing show's up. Is there a alternative ?
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Sep 24, 2008
here I am again I have written a small class called 'Messages' that holds the user messages.The case is that I am not being able to import it. Here it is:
[Code]...
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May 14, 2011
I have a form that has a queue and i want to transfer that queue to another queue in another form. however when i try to use the elements in the second queue after transfer, I get the error message queue empty!below is my code
First Form
Imports System.Collections.Generic
Public Class Form1
[code].....
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Nov 30, 2011
I have an array that I'm basically treating like a queue (FIFO)I'm trying to decide the fastest way to implement this.Currently I'm just iterating through and shifting everything up an element and placing the new data @ 0. This was fine when I was dealing with 1000 element arrays, but now I'm moving up to 100k element arrays and it's stalling my code.It has been useful to have the data in array form because I'm using the array.sort method and a few other statistical modifications that use the element number (of the sorted list) to work.I'm not sure if VB lists are (like Java) pointer based, and if so I think that shifting pointers would execute faster than my current approach.My question is, if I did move to a list would it a) be faster, and b) is there a way to call a quick sort from the list class?If the execution time is the same for the array vs. list is there a better way to make a FIFO structure in VB?
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Mar 2, 2010
how "peek" really operates or something but what I'm trying to do is have 2 separate audio files play one after the other over and over again.I was expecting that I would hear wav1 and wav2 alternate but I only hear wav1 on each cycle.Doesn't peek use the first data then push it to the back without discarding it?Therefore wav2 would be next in line to be played? [code]
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Jan 30, 2012
Has anyone seen a .net email queue? I want to be able to specify the SMTP server to send via, report problems and retry emails if necessary or requested.
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Oct 13, 2011
I have been trying to implement the jQuery weekcalendar using .net. What I can't seem to figure out is why weekcalendar states events.events is undefined after I make an ajax call to a webmethod I created which returns JSON. Below is the relevant code:
[Code]...
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Aug 2, 2009
I want to make Keybord events and mouse events for learning and educational Purpose.
1. In Form any object like A "picture box" move by Arrow keys .
2. Picture Box Contain many Picture i want change Picture With next and Previos By Arrow keys.
3. I contain Voice of alphabet in Mp3.When i Press any button in textbox then its work.
4. Mouse Pointer Change My Own.
5. I click any Object or any thing By mouse its noice clicking sound like Tik Tik Tik.... Question No 3 is very hard to do . but not im possible
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Jul 28, 2011
How can I clear the printer queue from VB? if I was doing it manually I would stop spooler service, empty the windowssystem32spoolprinters folder and restart the service
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Apr 13, 2012
What is the difference between a queue(of t) and list(of t)? I've been working a lot with list(of t), but up until recently I haven't even heard of queue(of t). I know that they are both general list.
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Jun 27, 2010
I am currently creating a FTPWebrequest to handle my uploading (the webrequest section of my function is below). At the moment my code loops through this webrequest section for each file - giving the file path of each file in the string "CompleteLocalPath". For each file it creates a webrequest and giving the required file path, uploading the file using a file stream, and then closing the stream. This works, but seems to take quite a long time. Can you recommend a more efficient way? Perhaps by using one webrequest but modifying the upload path?
[Code]....
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Apr 19, 2011
I have a program that is using API's to send mouse events and keyboard events to another application that is running. I need to know how to tell if there are any messages left to process for that window after I have click on a button or moved to the next field. I need to know this so I don't send any more mouse or keyboard events until it has finishing processing everything in its message queue. An example is that I click out of the key field and the form has to go out and read a client record. This may take a second or two, so I need to wait until the form is ready for more input.
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Aug 7, 2009
The below code (VB 2008) will check the print queue every milisecond for a job. It will then show the pagecount in a text box. It works great when im printing to a local printer, but As soon as I change my pc default printer to a network printer, I cant capture any data.
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Apr 9, 2009
I'm looking for a way to move a printjob from a paused printer to another printer. I have looked at the new name space System.printing in .Net framework 3.X.Is there a way to do it in .NET?An externa application creates a printjob.I catch the event "a printjob add" in the printqueue.I pause the printjob.Now I want to move the printjob to another printerIs there a way to do it in .NET?
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Aug 20, 2009
Say I have a rolling collection of values where I specify the size of the collection and any time a new value is added, any old values beyond this specified size are dropped off.Obviously (and I've tested this) the best type of collection to use for this behavior is a Queue:
myQueue.Enqueue(newValue)
If myQueue.Count > specifiedSize Then myQueue.Dequeue()
[code].....
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Aug 26, 2010
We have made code for writing to and from a IBM message queue.Writin goes well, but reading gives an error, see bold text
[Code]...
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Aug 27, 2011
How do I get a Event Handler to fire from within a nother Event Handler?
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May 11, 2011
I would like to develop a queue application in VB for a clinic, so that when a patient comes, he is entered in a queue as he waits. A doctor picks the next available patient in the queue and a message is posted in the screen for that patient to go to the doctors room. How do i do this?
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Jun 24, 2010
How do I (i) sort the array of type FileInfo returned by the DirectoryInfo.GetFiles method by (file) CreationTime in descending order and (ii) once the array is sorted efficiently load it or convert into a Queue object (of type FileInfo) for subsequent processing. I thought of using the queue object as it handles things on a FIFO out basis and I'll be adding to the queue as new files arrive.
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Jan 12, 2012
I'm developing an application to monitor print queue and pause it to check some conditions, then resume or cancel print job. I can get total pages for printing document but can't get number of copies, how can i get this parameter.
Ex. If someone print 5 pages document for 2 copies, the total pages i got is 5 not 10 pages. (how can i get the real total pages)
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Feb 1, 2010
can i remove an item from the middle of a queue?
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May 14, 2011
How do i return a value from a function that i can copy to a queue?I imagine that value must also be a queue.
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Oct 21, 2011
Im a newcomer for Sonic JSM queue. I need to send an xml message to a JSM queue. I can send a string message using following code.Dim msg As Sonic.Jms.TextMessage = SonicSendSession.createTextMessage()
msg.setText(ESBMessage)
msg.setStringProperty("instance", Header)
SonicSender.send(msg, Sonic.Jms.DeliveryMode.PERSISTENT, Sonic.Jms.DefaultMessageProperties.DEFAULT_PRIORITY, MESSAGE_LIFESPAN)
[Code]...
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