how to use multithreading in VB.net application?
154421
Include the Threading namespace in your class.  Then, you can create a new thread, assign it an address of the function or sub you want to run and let it go do its thing.  For a quick-and-dirty way of doing it, you can also use the ThreadPool.QueueUserWorkItem and have it run through a sub for you on a seperate thread.  \n\nGenerally speaking, if you want to have your thread looping continually through the life of your application, I would declare a thread, and run it that way...you have more control.  However, if you just want to run something once and be done with it (say, for example, a database update), I'd use the threadpool.\n\nHowever, you should be aware that there's a whole new can of worms that open up to developers who use threading for the first time.  Because you have the posibility of two threads trying to access the same object at the same time, you have the potential for thread-locks.  So you have to use things like mutex and synclock to guard against your application locking up.  Also, you can't access GUI controls from a thread other than the one that created them.  Sure, you can probably get away with it most of the time...but your application will randomly hang and you'll bang your head for MONTHS trying to figure out why (trust me on this!).  To prevent this, look at creating delegates and accessing the GUI object ONLY from the delegates.\n\nYou can look up all of these topics on MSDN and find lots of information and samples on how to do all of this.  There's a LOT to doing a multi-threaded application, but hopefully this will get you started!\n\nGood luck,\nDan
300205
As the Definition says it is a SUBROUTINE (or a procedure) that is executed when the VB Form is Loaded........\n\n\nIn practice all the database connections and the Global Variables are defined in this Sub becuase this is where the processor do bulk of the processing of your application i.e. at the start.\n\nIt is used like\nPrivate Sub Form_Load ()\ndim DBConnection\ndim name AS String\n.\n.\n.\n.\n'Other executions\nEnd Sub
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It works for me. But any way I think you can log on to www.allexperts.com\nGo to Computing-Programing-Basic-vb.net and post the question there.\nMany a problems for me have been rectified.\nIts free of charge.\nHope this helps.\nCMR
554785
Dim CurrentlySelected as integer\n\n'Get the currently selected item\nCurrentlySelected = MyListbox.ListIndex\n\n'Delete the currently selected item\nMyListBox.RemoveItem(CurrentlySelected)
1019358
Here's 17 different implementations. Take your pick...\nhttp://www.planetsourcecode.com/vb/scripts/BrowseCategoryOrSearchResults.asp?txtCriteria=Tic+Tac+Toe&blnWorldDropDownUsed=TRUE&txtMaxNumberOfEntriesPerPage=10&blnResetAllVariables=TRUE&lngWId=10&optSort=Alphabetical
256294
Sometimes, JavaScript / VBScript used by an application has errors in it. That's what this message is telling you.\n\nSomewhere, in your system tray, is a widget -- a printer utility, or some gizmo of some sort -- that is causing the problem. Your best bet: start turning them off one at a time until you find the offender.
28836
Use CreateProcess instead.  In the startupinfo parameter (2nd to last), set the wShowWindow parameter to SW_HIDE.  Also, since you're using command-line switches, put the entire string in the lpCommandLine parameter and leave lpApplicationName NULL (switches don't work right in lpApplicationName).\n\nSorry, I'm a Delphi guy and don't have any VB samples for you.
249072
Try a counter approach.\n\ngetDataObject()\n{\n  synchronized (this)\n  {\n    counter++;\n  }\n  if (!open) throw error;\n  try\n  {\n//  do stuff here...\n    return stuff;\n  }\n  finally\n  {\n    synchronized (this)\n    {\n      counter--;  // must decrement in sync block\n      notifyAll();\n    }\n  }\n}\n\nsynchronized close()\n{\n  // counter is guaranteed not to decrement\n  while (counter > 0)\n    wait();  // until here, so we won't miss the notifyAll from above!\n  open = false;\n}\n\nI deserve a beer for this I think...
551354
It's a bit tricky, but the function you want to call is the Interaction.Command function  This exists in both VB6 and VB.NET, although the .NET version is enhanced to a be a bit more powerful.  \n\nWhen you call the interaction.command function, it returns a variant data type containing everything in the line after the program name.  So, if you had typed something like:\n\nmyExecutable.exe /a=myName /b=myHeight\n\nyou would do the following:\n\ndim strCommand as string\nstrCommand=interaction.command\n\nThe value in strCommand at this point would be:  \n\n/a=myName /b=myHeight\n\nYou have to parse through the return to find whatever separator characters you defined, count arguements, etc. The best way I've found to do this in VB6 is with a loop from 1 to the len(strCommand).  Test each character looking for your separator charactors, and then you just use the MID function to extract thos parts to wherever you need to put them.
1122755
hi...................u will get complete information on vb.net . Just u have to search for VB.NET TUTORIAL   on yahoo.........hope i helped u in finding what u wanted.
584736
Multi programming: Multiprogramming is the technique of running several programs at a time using timesharing.\nIt allows a computer to do several things at the same time. Multiprogramming creates logical parallelism.\nThe concept of multiprogramming is that the operating system keeps several jobs in memory simultaneously. The operating system selects a job from the job pool and starts executing a job, when that job needs to wait for any i/o operations the CPU is switched to another job. So the main idea here is that the CPU is never idle.\nMulti tasking: Multitasking is the logical extension of multiprogramming .The concept of multitasking is quite similar to multiprogramming but difference is that the switching\nbetween jobs occurs so frequently that the users can interact with each program while it is running. This concept is also known as time-sharing systems. A time-shared operating system uses CPU scheduling and multiprogramming to provide each user with a small portion of time-shared system.\nMulti threading: An application typically is implemented as a separate process with several threads of control. In some situations a single application may be required to perform several similar tasks for example a web server accepts client requests for web pages, images, sound, and so forth. A busy web server may have several of clients\nconcurrently accessing it. If the web server ran as a traditional single-threaded process, it would be able to service only one client at a time. The amount of time that a client might have to wait for its request to be serviced could be enormous.\nSo it is efficient to have one process that contains multiple threads to serve the same purpose. This approach would multithread the web-server process, the server would create a separate thread that would listen for client requests when a request was made rather than creating another process it would create another thread to service the\nrequest. So to get the advantages like responsiveness, Resource sharing economy and utilization of multiprocessor architectures multithreading concept can be used
142487
Try the following link:\n\nhttp://custom.programming-in.net\n\nIt has info about the API along with how to access it from C#, VB.NET & VB6
743647
Dim i, total As Integer\ntotal = 0\nFor i = 0 To Integer.Parse(TextBox1.Text) Step 2\n     total += i\nNext\nMsgBox(total.ToString())
168124
in the startup form or sub main insert this:\n\nPrivate Sub Form_Load()\nIf App.PrevInstance Then\nEnd\nEnd If\nEnd Sub
791942
First off, the program you designede in visual, are you running it in another visual basic program or are you importing it into another program.  Second, all you need to do to run the program by single key execution is to set the program to a macro.  For more detailed info go to the help section in visual (or press f1) and type in "macro".  Everything you need should be there.  You can send me a direct e-mail if you have any other issues the help won't help with (flyingrizzly@yahoo)
966661
check out http://www.pscode.com for examples.  You would need to use ADO.NET in addition to VB.NET in order to obtain the required data.
268014
There are function like GetChunk and AppendChunk that can be used for this purpose\nsee the detailed code here http://www.vb-helper.com/howto_database_picture.html