I have a MDI WinForms application that can perform several tasks. Each task is running as a backgroundWorker.What is the good approach to control the running threads:check whether the specific thread is running stop specific thread ?For example it shouldn't be possible to run the same task simultaneously.May be I need a separate class where I can store isTaskRunning variable?
View 1 RepliesI have an app that I query a database for IP information, then Ping the IP's and log the results to a database. This takes a long time (testing with 200 takes about 5 minutes as they are all sites across public internet) due to waiting for response from 1 ping before sending the next ping for the next site.
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is it guaranted that a task A started before TaskB will be completed before task B assuming the task do the same level of operatons?or in other words is there a chance that a task B will finish before tast A in the assumption that the task calls the same procedure?
View 4 RepliesI have two websites "WEBSITE 1" and "WEBSITE 2"...now i want that when someone logs in to "WEBSITE 1" he does not have to log in to "WEBSITE 2" and vice versa...ie when he/she logs in to any one of he websites and opens the other one simultaneously he/she does not have to login to the other one.For eg :- when you are logged in in gmail...you do not have to log in in youtube or orkut or google+
View 1 Replies[code] 'The description for the state.getbuttons() is:'Public Function GetButtons() as Byte (is a array of buttons).'The high-order bit of the Byte is set if the corresponding button is down, 'and clear if the button is up or does not exist.This code is used to show if certain buttons of a GamePad/joystick are pressed using the DirectInput method (DirectX SDK).This code shows how many buttons are pressed simultaneously. So 00 for zero and 00 01 if two buttons are pressed. I would like to know what button exactly is pressed (some kind of unique code for each button). But I can't get it done.
1. Is there a way so show all the bits inside the state.getbuttons()? (maybe there is a unique combination for each button).
2. What does &H80 mean?
I have referred to the following question at: Using foreach loop to iterate through two lists. My question is this, with regards to the chosen answer: Can the o.DoSomething be a comparison? As in:
For Each a in ListA.Concat(ListB)
If(a from ListA=a from ListB) Then
Do Something here
End If
Next
I'm using VB.Net and would like to know how I can do what I have shown here. That would basically be to iterate through a joined list separately/independently.
ok im reposting this question cause i got some off track answers last time.I have 3 aspx pages - page1, login and page3. Now when i goto login page from page1, after i login and goto page3 i should be able to open a popup on that submit and the login should change to page3. but if i goto login page directly, the popup should not open and the login will goto page3 as normal design. how can i achieve this?
View 1 Repliesi'm from Turkey. i have a question. can i use vb6 and vb express 2008 simultaneously? my os is win 7 and runs intel q6600 core2 quad, 4 GB ram. i asked becasue i have no idea what will happen when i do this.
View 1 RepliesI have two form the parent form with the menu list and the child form. I want to show the two form simultaneously or the main menu first and then the child form.
View 13 RepliesI want to expand it a little bit and add a second timer that runs parallel to the first timer, but is not affected in any way shape or form by the first timer.
Ive tried nesting the second loop in the first loop but the second loop takes 3 seconds to complete (I use thread.sleep(3000)), so I found that it froze the first loop till the second loop finishes. I was reading about system threading (System.Timers.Timer) and it seems like that is the route I want to go.
I wrote this quick as an example:
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I cant use the timer1 to set off the second round of events because of the thread.sleep. I was hoping that the code above puts the second thread to sleep while the windows.form.timer continues on ticking every 1000 ms
I used different backgroundworkers to instantiate some 'heavy' forms thinking that it will reduce the time to instantiate them if I did them at once but it looks like I am wrong since it is still taking about 43 seconds to load all of them. Am I missing something or do you have a tip on how I can speed up their instantiation?
View 15 RepliesI wrote a function that returns the number in a particular field, my issue at the moment is how to update that field before i return the previous value i collected from the field. i am seeking any guidance available. Enclosed is the function i wrote.
Function GetTransactionNumber() As Int64
Try
GConn.ConnectionString = GConnstr
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how can i query 2 arrays simultaneously?for example:
dim string1() as string = {"a","b","c"}
dim string2() as string = {"d","e","f"}
dim string3() as string = ? 'linq query that selects all elements in string1 + all elements in string2
Not wanting to hijack 45minutes thread, I thought I might spawn a thread of my own based on his question.
PlausiblyDamp was kind enough to provide some generic code, which I have modified and attached.
I have made a few alterations mostly around removing random objects, as the game in question (Space Invaders) has a set amount of aliens and set starting positions.
As a start I have limited the UpdatedPostion to horizontal movement as the aliens only go side to side unless they hit an edge.[code]...
I am creating a GUI that monitors the entered application and if the application crashes the GUI starts the application back up. Problem is to run this application (WoW Private Server) I need 3 running applications. Is there a way to shell and wait 3 applications all at once. OR if i was to create a separate console application who's only job was to start the three applications at once how would I pass the application variable?
Here is my program thus far: [URL]
I have a datagrid structure made below.
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how can i use two rows at same time to calculate the date diff ? so that date diff is calculated automatically and inserted in the cell.
I'm developing a Public Announcement appplication with two main features:
1. Record audio and playback on event (I've achieved this)
2. Allow 'realtime' playback on event - no recording, just a live announcement
So, how can I cause the microphone input to be sent to the speakers simulatiously as the announcer speaks?
mciSendString("open new Type waveaudio Alias recsound", "", 0, 0)
mciSendString("play recsound", "", 0, 0)
i want to add a picture of a field like a football field and on it a ball would roll (just like the football). i have loaded the field's picture in the picturebox , but m nt able to load the second picture i.e of the ball. how can i do this?
View 1 RepliesWe are looking to design a security application that does the following on laptops:If the ethernet adapter is used (cable plugged in) disable/block all other network connections (wireless WIFI, mobile broadband (PPP), virtual VPN adapters etc)When ethernet adapter is not being used again, all connections allowed.We have looked in the WMI a lot but there are no good ways of doing this. Only disabling the network connection is not secure enough because most mobile broadband applications try to re-establish the connection. This should be an application that works on all laptop vendors without any user interaction (such as choosing interfaces etc..).
View 3 RepliesI'd like to allow the user to select up to an entire column of cells and type and/or paste a single value that would then change the value of all the selected cells in the DataGridView to the value that was typed or pasted. I understand this is probably two separate answers, but perhaps if there is a way to set the contents of the clipboard with the value typed, I was thinking it may work well to identify both things I want to do.
View 3 RepliesI need to play multiple files simultaneously at the moment i am trying to use mciSendString() API it plays the files listed in a listbox. But it is only playing the first one i assume it would play the next one after the first is finished... cbf waiting to see.
Note this was an attempt in C#:
private void PlayButton_Click(object sender, EventArgs e)
{
if (SongsListBox.Items.Count > 0)
{
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I have been using the My.Computer.Audio.Play method for sounds in my program for a very long time, but now I have reached a point where the program needs to be able to play more than one sound at a time. What is the best (and preferably simplest) way to do this?
View 8 RepliesI want to play multiple sounds simultaneously from My.Resources in Visual Basic 2010. I have tried:My.Computer.Audio.Play(My.Resources.SoundName, AudioPlayMode.Background)
I have also tried using multiple Windows Media Player controls, but that also didn't work.The first sound is cut off when the next sound plays.When searching around the internet I found people suggesting using 'DirectSound', but there are only tutorials for DirectSound in VB 6.0.
this is button 1:
WebBrowser1.Navigate("javascript:OnClick(go(512,5))")
this is button 2:
WebBrowser1.Navigate("javascript:OnClick(go(513,5))")
i try:
WebBrowser1.Navigate("javascript:OnClick(go(512,5))")
WebBrowser1.Navigate("javascript:OnClick(go(513,5))")
But this presses only on the second button ("WebBrowser1.Navigate("javascript:OnClick(go(513,5))")")
and not on two of the buttons.
I made a favourites feature on a webbrowser I made, however it can only add favourites and not remove them. Even when I remove them from the Listbox using[code]...
View 8 RepliesHow to run multiple funcations simultaneously using multithreading concept?
Actually i am making a software which has backend tool as MS ACCESS. it has 15000+ records in database and i need to display that records as my software loads..but it is much time consunable and sometimes it even goes out of time exception
check about 30 links simultaneously using HttpWebRequest?
View 1 RepliesI'm writing a program which gets the time and date from forums which only show "x hours ago" on the main thread list.What I do is get a list of threads, open their print version and fetch the info.I'm currently using a single webbrowser, because there's no control array anymore. This makes the proccess very slow.Is there a way to open all the threads' print versions simultaneously?(BTW, I'm using DOM functions like GetElementsByTag, so I'll need to get the page's "Document" object.)
View 8 RepliesI have three listboxes with vertical scroll bars. I'd like it so that when one is scrolled, so are the others. However, I can't seem to find a "scroll" event. I tried this:
vb.net
Public Scrolling As Boolean
Private Sub ListBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListBox1.MouseDown
If e.Button = MouseButtons.Left Then
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It works when you click and drag on the listbox area where the items are, but not when you click on the scroll bar!
I have a text box with the names of student and another text box with their grades side by side in the same order..
I want to synchronize the Vertical scrollbar of both the text box to a single scroll bar such that when i move it the contents in both the textbox moves simultaneously.
I want the code to synchronize both the textbox with a single scroll bar...