Second User Should Not Be Able To Process Because DoProcess Is Already Locked
Oct 12, 2010
We have a stored procedure that executes in a long time so we decided to enclose it in a thread. Before executing the long stored procedure, the procedure should be locked so that only one user can execute the thread. However, I have noticed that a user can still execute twice. Here is the code. [code] The problem is when I tested the code by opening two browsers then simultaneously process, two records are being inserted into our lock table. The second user should not be able to process because the DoProcess is already locked.
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Feb 1, 2012
My program writes to a .txt file (and this is the ONLY program that writes to it) in a thread (with lowest priority), but every now and then it gets an error "The process cannot access the file because another process has locked a portion of the file" when it executes this code: swLog.WriteLine(sPacket).Other program reads from the file, not write to it, why do I get this error, and how can I get around it, or what shall I do when I get this error since I can't write to the file ?
Class
clsFile
Private swLogOrig As StreamWriter
[code].....
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Oct 24, 2011
I am having some issues with an application written in VB.net.
As part of a routine, an sqlce database gets backed up before the routine then if an error occurred gets restored. I am using system.io methods copy and delete.
I have released all the objects (connections, commands, datareaders) asscociated with the sqlce database by disposing them if they are not nothing. I also do a GC.COLLECT however when my delete command runs, an error message says it is open by another process. The PROCEXP.exe process explorer tool says it is attached to 4 undefined processes. After a while in debug mode, these clear and I am able to delete the file. However this is not acceptable as my program cannot "wait around" until they are released! I was under the impression that object.dispose forced an immediate disposal rather than waiting for the garbage collector to clean up (if you were just to use object=nothing), but still there appears to be a finite time before these objects are released.
My question is, is there an alternative way of checking (programatically in vb) for what is holding open an sqlce database (or in fact any other file for that matter) then killing these processes?
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Jun 4, 2009
I have written a windows service that is meant to launch a notepad when a specific action happens. The problem i have is that even though the service launches notepad, the actual notepad it self is NOT visible. I know that it has been launced because i can see the process in the task manager. By the way the process is listed as a SYSTEM process rather than a process under my user name (i believe that is because my process is a "LocalSystem" one).
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Feb 11, 2010
I want to listen to events in my windows forms .NET application for the following system wide events :
[Code]...
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May 31, 2012
I thought I postet this yesterday but I can't find my thread so if this is a duplicate please point me at the original one. Background: I need to create a user account and Modify it's registry before the user logs on the first time. Creating the account is done by using the Winnt provider (works great). To create the profile I'm trying to use Process.start to launch a process as the newly created user. With the use of loaduserprofile property the users profile gets created and i can do my regwrites without problem.
[Code]...
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Oct 7, 2005
How to get the user/owner name of a process in vb.net?The reason I need it is because I developed an application,which I will put on the winnt enviroment, I want to allow multiple instance.but only allow one single instance per user.I am using Application.Run(MyMainForm) to start my application
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Aug 1, 2011
I am using Process.GetProcessByName to find how many sessions have a specific program running in it and to get the user's name associated with that process. The Process.SessionId is correct but the Process.StartInfo.UserName property is always empty. Is there another way to get a user's name that is associated with a specific process?
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Jul 18, 2011
I'm writing a program that checks processes (when they start), and kills any processes that aren't acceptable. My program is mostly done, but I only just ran into a problem: when I try to get the path (one of the criteria) of a process running under a different user, (MainModule.FileName) I get an exception:
System.ComponentModel.Win32Exception occurred
ErrorCode=-2147467259
Message="Access is denied"
NativeErrorCode=5
Source="System"
[Code] .....
Now, the program doing the checking is running with complete administrator privileges, so I can pretty much wrangle any permission I need. How can I obtain the path of the process? (I can use WMI, by the way, I've already used it for another part of this).
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Oct 29, 2011
I am writing an application that needs to be running all the time and I don't want the user to be able to close it. I don't want to hide the process from Task Manager. All I need is that when the user tries to terminate the process, he has to enter a password.
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Apr 6, 2009
I try to kill all processes of a specified user.
i use
Try
Shell("C:WINDOWSsystem32 askkill.exe /S localhost /U userx /P passwort /f /FI " &
[code].....
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Oct 6, 2010
I use following code to run process as other user [with admin privileges]
[Code]...
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Jun 27, 2010
In Windows Vista/7/2008/2008R2, is it at all possible to launch a process in a user's session from a service? Specifically, the local session would be most useful.Everything I've been reading seems to say this isn't possible, but I figured I'd ask here before giving up completely.My service signs on as Local System.
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Jun 20, 2011
I'm fairly new to vb.net and trying to get information for a project at work! Basically I can list all the applications running on a machine, I cannot however retrieve the details of the user running it! At the moment I'm using the following code after importing System.ServiceProcess and System.Diagnostics.Process:
Public Sub GetProcess()
Dim pr As Process
A = 0
For Each pr In Process.GetProcesses(System.Environment.MachineNam e)
ReDim Preserve arrProcess(A)
arrProcess(A) = New String() {pr.ProcessName.ToString, Process.GetCurrentProcess.PrivateMemorySize64}
A = A + 1
Next
End Sub
I have tried using pr.StartInfo.UserName but that just returns the username of the person logged onto the machine.
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Sep 22, 2011
In fact, the process is being written into a library to be pulled in from other applications. However, how do I provide a way for a WinForm to subscribe to the process to update as the process gets executed? I've open this question from both VBA/VB6 and .Net because its part of the gamut for UI development.It's also worth mentioning that these are subroutines and not classes that are running the methods, so event raising appears to be out of the question.[code]
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Oct 29, 2009
Progressbar for User created Process execution
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Nov 24, 2010
I have a Windows Service that needs to start other processes under a user context other than that used by the service. I've seen other posts related to this but have seen no resolutionI've tried many things and have been unsuccessful in starting the process from a Windows Service when a username, password is supplied. orking as it's a requirement of our system to do this and it worked fine until recently and only fails on Vista and Windows 7 (works on XP).
The following code is used to start the process.
Dim P As New Process
P.StartInfo.Domain = Domain
[code].....
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Oct 13, 2010
I am trying to use Authorize.net's SIM payment gateway process and am using the base code provided on the developer site. The problem is I am using Master Pages with my site and the hidden field names are getting concatenated with the nested control IDs as an example:
[Code]....
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Aug 15, 2010
The original code came from AutoItI just rewrote what was necessary for VB.NET and added the structures and throws. If successful the PID of the process started is returned, else an exception is thrown. No imports needed.
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Jan 31, 2011
I have a vb.net 2008 application that is supposed to run at startup. After meeting certain conditions, the PC is supposed to restart. Below is the code that is failing:
System.Diagnostics.Process.Start("shutdown", "-r -t 00 -f", myUsername, myPassword, myDomain)
myUsername and myDomain are both strings while myPassword is a SecureString. The application works properly when execute manually, but give the following error when executed from startup (either by placing in the startup folder or by adding to the registry):
The directory name is invalid
Also, the program executes properly when the last 3 arguments are left out and the user has the necessary rights.
How do I force a restart using an specific, alternate user credentials on startup?
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Oct 13, 2009
I have populated a ListView with currently running processes and with the help of JMC, been able to highlight specific rows based on memory consumption. However, I've decided to change it up a little bit and change the color of rows based on whether the process is owned by the User, if it's a System process, or if is a Service. I've already been able to determine if the process is a User process by utilizing the OpenProcessToken.
[Code]...
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Sep 13, 2010
Shutting down a pc in vb.net is easy:Process.Start("shutdown", "-s -t 00")less the user has locked the pc in which case the above fails.How do I get around this in vb.net? How do I shutdown a locked PC?
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Jun 11, 2011
I'm currently writing a small system tray app that needs to shutdown my PC at a certain time. That bit's easy:Process.Start("shutdown", "-s -t 00")But how do I do this when my PC is locked? The above doesn't work and I don't want to leave my PC unlocked and unattended
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Feb 1, 2012
I have written an application that monitors a log file. The Log file is locked by the writing application so I read it asynchronously:
Dim LicenseLog As New System.IO.FileStream("\serverLOGlicense.log", IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.ReadWrite)
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Jun 3, 2009
I am loading data from an Excel File to a dataset and performing some computation. The problem arises after the application is closed, the Excel file is locked for some reason and can only be read.
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Jan 18, 2011
i need my application to determine if the desktop of the pc is locked or open.how would i go about doing this? i know that it is something to do with the registry but i dont know how to go about getting the values
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Nov 7, 2009
I right clicked on the toolbox and in the context menu, there was a button that said "Show teresting controls, but they were disabled.
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Oct 25, 2010
I have been using VB2005 for many years on 2 PCs. Over the last month I have been getting an error when I try to run the project from the IDE:
Error 1 Unable to copy file "objx86DebugBackup.exe" to "binx86DebugBackup.exe". The process cannot access the file 'binx86DebugBackup.exe' because it is being used by another process.
C:WindowsMicrosoft.NETFrameworkv2.0.50727Microsoft.Common.targets 2324 9 Backup
My questions:
1. What has changed?
2. One thread I found suggested that it is a bug, but if true is this something that has been introduced recently (I'm not aware up updating VB2005 unless it happened as part of the general updates).
3. How do I get it back to where it was?
The file is actually locked by my own process, no other application can be using it. I've even tried it with a few line noddy program. I always have to come right out of the IDE, wait a couple of minutes and then go back in - a total productivity killer.
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Feb 26, 2007
Is there any way to send keyboard input commands when computer is locked to a particularwindow
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Apr 21, 2010
is there a way to unlock file that is locked by IIS without doing a IIS reset? If yes, how can I do that in VB
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