Using Namedpipes In 2008 Vb .net - Peek Is Hanging?
May 6, 2009
Creating an application that uses both namedpipes and TCPIP connectivity to pass data between 2 legacy applications.
When there is actual data to pass everything works great. But when the application is looking to see if there is any data to read from the named pipe side and there is no data, the Peek hangs until there is data. Is there a problem in the way I have it coded or is there a timeout that needs to be set?
Code:
'
' declarations
'
Private in_pipeName As String
[code]....
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Feb 20, 2010
I have a visual basic program wherein i fetch information from two textboxes format the output of the textbox in the required form and then make the output come as desired I use two arrays to read textbox 1 and 2 separately and then i use for .. next statement to perform the same action for all the lines in the textbox 1 and 2..
Both of them have equal no of lines..I have also give a progress bar in the form and assigned the max value as the number of lines and i have given the incrementation within the program for the progressbar..
When i run the program it runs quite well for certain instant of time and the progress bar also responds according .. After some interval of time the form hangs and the progressbar also hangs at that place..Later after some more time the form is back to normal and the process is in finished form with progressbar at 100%..
Is there any reason why the form hangs..If there was a major problem i must have not got the output at all but i do get the output after certain interval of time..Can this problem be solved??
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Aug 31, 2011
I would like to place a brush under the cursor as I move the mouse around a picturebox, so the person can see what they lay down when clicking. How could I do this. I am working on a custom scribble application.
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Feb 23, 2010
I'm not sure how to explain what's happening but it seems to be deadlock, i did search along the forum and actualy did find who had the same problem as i did. Unfortunatly i'm too new to this Threading and could not understand why does this deadlocks happen or how to avoid them.I'm using the following
Dim t As New Threading.Thread(AddressOf MyTestingSub)
t.Priority = Threading.ThreadPriority.BelowNormal
t.IsBackground = True
[code].....
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Mar 26, 2010
Edit 1: Uninstalled & Reinstalled Edit 2: Same problem. Seriously? Yes.I am having a problem with msvb7.dll eating 50%+ cpu on my dual core system. This usually lasts 10-30 seconds or so, during which time the IDE is non-responsive.
This occurs when I do pretty much anything in the text editor, and can be replicated by simply adding blank lines to a function, and then deleting them. Or pasting some code. Or... lotsa stuff.
SP1 installed I had DevExpress' refactor/coderush, components, and codeit.right installed, but have removed all 3 of them. (I had installed the latest version of Refactor Pro! (9.3.4), perhaps the day before)
I have tried a VS.NET Repair. There is a kb that referenced some cpu destroying with vb, but it was included in SP1
[Code]...
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Dec 8, 2011
I have a DataTable that contains 4 rows. I want to compare a value in one column in row 1 with the value in row 2. Something similar to this:
For Each row As DataRow in drRows
If row("column") <> row("column") 'I want the second row("column") to be the next row.
'do something else
End If
Next
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Apr 26, 2010
How could I use the Peek function instead of the Pop. When I use Pop I get a message box and it works fine. When I change Pop to Peek nothing happens.
[Code]....
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May 4, 2012
Dim OpenFileText As New OpenFileDialog()
Dim InStream As Stream = Nothing
OpenFileText.Filter = "txt files (*.txt)|*.txt"
[Code]...
I've been reading the MSDN Library and I need to use the StreamReader.Peek Method to check a text file while a I parse it.
When I try to use the Peek Method, I get an error saying , "Peek is not a member of System.IO.Stream."
I don't understand why it is happening because I am following the examples on MSDN, and I even checked other sources and it seems like I am doing everything correct. I am hoping it is just something small that I have missed.
I am also importing System, System.IO, and System.Text.
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Sep 9, 2008
Private Sub ListenContinuously()
Do 'Forever
[code].....
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Mar 28, 2010
I am getting the error "Format Exception was unhandled at "Do While objectReader.Peek <> -1" and after.'Date: Class 03/20/2010'Program Purpose: When code is executed data will be pulled from a text file'that contains the named storms to find the average number of storms during the time'period chosen by the user and to find the most active year. between the range of 'years 1990 and 2008 Option Strict On
Public Class frmHurricane
Private _intNumberOfHuricanes As Integer = 5
Public Shared _intSizeOfArray As Integer = 7
Public Shared _strHuricaneList(_intSizeOfArray) As String
[code]....
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Nov 5, 2009
Is anyone else having or know of an issue with VB2010 Beta 2 just "hanging" on the install? I can find no documentation anywhere through searches.
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Apr 16, 2011
I made a program that backs up data from the My Documents, Favorites, and Desktop folders on Windows XP to a server. When the data is brought down from the server, it brings it down in Windows 7 format. So, for example, the directory to My Documents in Windows XP is "C:Documents and SettingsusernameMy Documents." The same directory in Windows 7 is "C:UsersusernameDocuments."Everything works fine in terms of putting files and folders in the correct directory, but when bringing the data down from the server, the program sometimes freezes up and doesn't ever seem to get out of that state. It also makes the computer very slow and unresponsive after a while. Does anyone have any idea why this would occur?
Below, I have a code snippet of my copying code. I include a sleep command and a DoEvents command to halt the thread for a very short duration of time in order to make the UI more responsive.[code] I believe I may have to use some multi-threading to get this to work properly, but I've looked it up and cannot find out how to implement it in my program.
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Jan 6, 2010
I have a datagrid which receives updates for every 1 minute from the database. Whenever it gets update my whole form gets freeze and I cant do anything. To add on when first I log in also the log in page gets freeze because the form is being loaded during the first time.
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Jul 6, 2011
I am using the following code to receive data from a Public Address Controller.the programme sends data...waits for a reply....send more data...waits for a reply..etc.
[Code]...
is there some way of cancelling the BeginReceive after a delay so that the programme can carry on and inform the user that something is wrong and terminate gracefully?
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Dec 17, 2011
Here is vb.net 2008 code is: Public Function CheckURL(ByVal URL As String) As Boolean
[Code]...
when a url is processing in checking it hangs my application for a while. Is this possible it checks smoothly all url list without hanging my application.. Is there any other fastest way to check urls? Note: I have about 800 urls in file to check all links a valid by website responce or not.
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Oct 12, 2010
I have a windows forms app (32 bit) written in VB2010 which occassionally hangs in windows when minimised to the task bar You click on the icon on the taskbar and it will not come back up on the screen
No other modal forms are open in the application when the hang occurs Other programs respond OK
I ran Process Explorer against when it was Hung but do not know how to interpret the stack page, or even if it is helpful STack page with my application selected and Threads tab selected with CSwitch Delta column sorted descending. Then double clicking the top entry (my application .exe)
Note: This is running on an x64 machine, but also hangs on x32 machines
[Code]...
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Sep 22, 2011
software developed in vb.net(communicating with serialport) hanging and it is giving these rexceptions 1.The device does not recognize the command2.Unhandled exception has occurred in your application. If you click continue, the application will ignore this error and attemptto continue. if you click Quit, the application will close immediatly
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Jan 15, 2009
I am new to the forum. This looks like a cool site! I have a bit of experience in VB .Net, but not with threads or backgroundworker processes. I am sorry that the description is so long, I tried to make it as short as I can, but it is rather complicated. Here goes:
[Code]...
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May 9, 2011
I have a really simple form with a button that fires a Sub I created which gathers data from ActiveDirectory and adds it to an Excel Sheet. The problem is, when I click this button the whole form hangs. So I figured the operation that gathers the data and adding it to the Excel sheet should be run in it's own thread, so that the form won't hang. Possibly it would be great to add a progressbar as well. The progressbar however is located at the Main userform that starts up once the projects is run.
I've got one MainForm.vb and one CodeFile.vb. I want most of the code in the CodeFile.vb so it's tidier.
MainForm.vb
Imports User_edit.CodeFile
Imports System.ComponentModel
Public Class MainForm
Private Sub btnImportData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnImportData.Click
[Code] .....
Notice the ExportFromAD Sub I've got in the CodeFile.vb. This is what is actually doing the work. In the For each loop that adds data to the Excel is where I've put the MainForm.MyBackgroundWorker.ReportProgress(i * 10). Problem is, it doesn't actually update the label on the form. Which I find pretty weird because the form isn't really hanging or anything. Is it trying to access a different thread or something? Meaning, the form is run on it's own thread which can't be accessed from my second thread?
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May 3, 2012
Yesterday I worked on an MVC 3 project in Visual Studio 2010 and then shut down Visual Studio before leaving work.This morning when I try to load the same project in Visual Studio the project hangs. I have restarted my computer, disabled all add-ons and extensions that I could. Still no banana.I would try to clean the solution if I could get it to load but I can't.
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Oct 24, 2009
Setting a hanging indent using full word automation. I am using word 2003 and vb 2005. I am inserting paragraphs in the document and I am having some difficulty getting the whole paragraph to indent.
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Nov 19, 2010
I have a vb.net 2010 windows forms application (32 bit) which is hanging regularly on SOME computers, mainly when minimised to the task bar
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Dec 31, 2010
Is it possible to wait/suspend execution for a certain amout of time without hanging the main UI thread?
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May 6, 2011
I am trying to write code for a login to my program. But the code I have written freeze's the screen. Basicaly I want to check if username (TextBox1) has text in it and then check if password (Textbox2) has text in it. if either textbox has no text then a MsgBox show's with an OK Button. and then I dont want the program to run. I want The login form to reload so the user can insert thier username & password. the code I have is below.
[Code]...
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Oct 23, 2009
The following code works fine but seems to leave instances of excel.exe running in the background. How do I go about closing out this sub properly?
Private Sub ReadExcel(ByVal childform As Fone_Builder_Delux.frmData, ByVal FileName As String)
' In progress
childform.sampleloaded = False
[code]....
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Jan 21, 2010
I'm doing a big loop in my program and throughout the loop I'm updating the textbox in the form.
However the form "hangs" untill the loop is done. How can I keep the form visible and be able to read the updated textbox while the loop is still running? I tried Me.Update() but it didn't work. I'm sure there was something like processdata or something like that but I can't find it anymore...
Example
For x = 1 To 10000
form1.textbox.text=x
Me.Update()
Next
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Jul 25, 2011
I have a series of methods being called for my networking code. An event gets fired from the networking thread. Inside this event, which I've hooked into from a singleton class, I route messages to form level methods which they register on form load to handle certain messages they care about. Inside of these form message hooks I need to close the current form (which I was able to do) but also show a different one (which is giving me the trouble).
[Code]...
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Apr 15, 2011
I'm calling the following method from a button click event to export a datatable to excel. After the export is completed, the excel application object is quit, released and assigned to nothing. But in reality it's not getting released and stays active unless the entire application is closed. So every time the button is clicked for export, a new excel application object keeps on running. The problem doesn't occur if two of the lines from the method below are not used. But I can't omit them as they are really needed. Check the * marked lines.
Code:
''' <summary>
''' Exports data from a datatable to excel.
''' </summary>
[code]....
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Feb 26, 2010
How to change the frame rate in Visual Basic 2008 Media Player? I have error: System.NullReferenceException was unhandled Message: Object reference not set to an instance of an object. IS there any way to fix this? Here's My Code
[Code]...
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Aug 9, 2009
Where in Visual Basic 2008 Express Edition Software program do you specify a specific installation directory for a program?
c:Program Filesfinished program
I want to publish my program to try it out on another system and I want to ensure its installed in the directory structure I want.
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