Windows Service Won't Select From Access Mdb File?
Jan 5, 2012
I'm trying to do a simple select query from a MS access database from my service. Has anyone managed to do this in the past using their Jet eninge?
I had originally debugged and tested the code in a windows form and it worked fine. Once I moved the code into a windows service and installed it, it bombs out and doesn't generate any errors.
Thing is, I just found a .mdb file on the net so not entirely sure of the database version. I'm running office 2007 and read that if you used the .accdb version on a machine that didn't have access 2007 installed (which is going to be 99% likely), you had to install some drivers etc. in order for it to work. That is not an option unfortunately which is why I went with the old .mdb that could use Microsoft.Jet.OLEDB.4.0 without any drivers to be installed.
Do I need to import something into this project to get this to work? I've attached the code below. I've added a comment after the problematic line.
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[Code]....
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Mar 12, 2010
I have a .net Windows Service developed in VB.net. I have a settings file in the root directory called Connections.XML and I am setting the basedirectory [code]...
When I schedule the service this is working absolutely fine in my Windows XP machine. But when I installed the same service in our development server (Windows 2003 64 bit Server) for some reason it is not able to locate this file.
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Apr 7, 2010
I am newbie to vB .NET.I am developing an application for PDF files merge and split using vb .net (Visual studio 2008). Already i have included options for drag and drop and browse button to input the pdf files. Is there a way we can access global file select event and keyboard events to easy inputting the pdf files or any other files types??Example:if i use left mouse click along with control button the progrm will include the pdf file in the application form by getting the file path and file type information from windows explorer.
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May 17, 2011
I am trying to work on a service where I need to export a report into a folder under the service project and email it to the user. The delete the report when complete. The issue I am having is I need to know how to access a folder under the project. I know you can use System.AppDomain.CurrentDomain.BaseDirectory to get into the bin where the excuting file is but I want to get to a folder is this possible? If not is there a way of creating the folder under the bin directory and accessing it. I can manually create a folder under the bin but didnt really want to do that.
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Aug 1, 2010
I've been developing in .NET (VB, C++, C#) for a number of years, but I am finally creating my first service application (in VB). I need to read/write to a file contained within a user's documents. As a service is not associated with a particular user, would a service have access to a user's documents? ...regardless if that user is signed on or not?
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Feb 6, 2011
I'm new to write windows services and I was searching around collecting necessery info and howtos. What I'm missing is the interaction between my webapp and the service. The servicecontroller sending messages to the service and gives me the main status of the service. Is there a way to get custom messages, set custom properties and get properties? If there are not, should I use a file for both the service and the web app where both can read and write on, like a settings file in xml or are there better methods? Is there a way to get the messages in the corresponding eventlog, how do I access them?
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Nov 23, 2009
I have a very simple VB.net Windows Service written using VS.net 2008. The program after doing several other functions writes a log in one of the network folders. The code is as shown below: If I change the path from "Y:Activity_Log" to "C:Activity_Log" it is working like a charm.What is the problem if I use Y drive which is a valid one and I am able to access it from other VB.net desktop apps. Please help.
Dim strFile As String = "Y:Activity_Log" & DateTime.Today.ToString("dd-MMM-yyyy") & ".txt"
Dim fs As FileStream = Nothing
Dim activityfolder As String = "Y:Activity_Log"
Dim di As System.IO.DirectoryInfo
[code]....
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May 26, 2009
I have created a Windows service in VS 2005 that monitors a folder for XML files, reads some data elements from the XML using XmlDocument, then copies the files to another location. I find that when I drop 2 or more XML files into the folder simultaneously, it processes them with no problems, but when I drop the same files into the folder one at a time, I will get an error on the second file: "The process cannot access the file <my file> because it is being used by another process." If I stop my service, restart it, and drop the second file into the folder again, it works the second time. I am confident that no other program is accessing this file at the same time as my service. My impression is that the processing of file # 1 is somehow not releasing all of the resources, leading to the processing of file # 2 mistakenly thinking that it can't access that second file.
Dim FileWatcher As New FileSystemWatcher()
It points the watcher to my folder, sets up an event handler, then enables the watching:
FileWatcher.Path = InputFolderPath
[code].....
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Mar 30, 2009
I get the following error in Vista while trying to start/stop a Windows Service that I created.
Cannot open ServiceName service on computer '.'.
The same code works for XP.
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Jul 14, 2011
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a
generic class and is not marked as
[ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be
exposed for such types. Consider marking the type with
[ClassInterface(ClassInterfaceType.None)] and exposing an explicit
interface as the default interface to COM using the
ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
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Mar 19, 2012
I am trying to make a handle for a custom control I made. The user control consists of many additional controls within.I am using this code to add the user control to my Form.
Dim ToolBox As New ToolboxPanel
It's created and works fine.
[code]....
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Feb 16, 2011
I want to question how to call bat file in windows service using vb.net. This is my code:
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
[code]...
this service created in service windows(service manager windows), but when i start this service not happening. What wrong in my code
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Aug 22, 2010
Trying to develop a windows service which will write to a log file at prefix interval, but surprisingly the code "writelog" routine which previously work in a normal windows system but doesn't work under service.
[Code]...
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Aug 1, 2010
I changed config file of the windows many times. Before changing config file I stopped the service and after changing config file, started again. Every thing worked fine.
But last time when I made some changes in config file of the windows service and started it - It didnt worked, I even tried reinstalling the service but in vain.
As a last resort I rebuild the service with new config file and copied newly build files on the server and installed the service. To my surprise the Windows service worked perfectly this time.But I have only made changes to config file and the code of the windows service was untouched. My question is, do we need to rebuild the Window service if we change the config file many time?
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Feb 2, 2012
I am creating a windows service in VS2010, and in order to store a user's input during installation I've been told to write it to a file called app.config.However i cannot find this app.config file? Does it create one in a windows service project? or just in a WCF windows service project?
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Sep 11, 2011
I am creating a windows service to save current username and logon time in a CSV file. But when I install the service, the file is just created, not details are written to it, and that file is set to read-only mode. what is the problem in my code?
My code:
Imports System.IO
Imports System.Text
[code].....
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Dec 9, 2009
I am working on a backup utility for use with the mysql db. Because I need the actual backup to run regardless of if a user is logged on or not, I created the backup engine in a windows service.
Basically the backup engine checks to see if a backup job is scheduled to be run and if it is, it kicks off a mysqldump to do the backup. For sake of performance I am saving all backup jobs to the local c: drive then doing a file copy to the user defined destination.
Everything works fine except for the file copy. If the user selects a local resource to the computer it works fine. However, if a network drive is selected, I get an error that it cannot find the path.
I started thinking about it and believe this is expected since the backup engine is probably oblivious to whatever mapped drives that particular user has, i.e. the mapping process is done when someone logs in and my app is running at a lower level.
I started doing some research on this problem and found that some people are saying that windows services are oblivious of networks all together. This seemed a little odd to me so I thought I would bring the issue here.
Is a windows service truely unaware of network activity? How can I change the program to move the completed backups over to a network drive?
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Jun 1, 2009
I created a VB Windows service with a FileSystemWatcher (VS 2005). When someone places an XML file into a folder, I want the service to read it, then move it to another folder. I do the move with this type of command:
[Code]...
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Mar 9, 2009
I have to schedule an exe file as windows service.The exe file should be triggered when user connects to the pariticular net work for ex: company network.User can connect/disconnect to the company n/w "n" number of times to the network in a day. so every time when user connects to the network theservice should run the exe file.
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Jul 4, 2011
I am having a windows application. That downloads files from server and write into the local directory. It works fine. When we try the same appliication in Windows 7. IT shows an error Access to the path denied (While writing to the local directory).
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Apr 27, 2010
I get the error mentioned when printing to a network printer.The error does not occur when run under XP/Win2003, in a WinForm app or when a local printer is used.The error does only occur when run as a Windows Service under Vista/Win7/Win2008 and printing to a network printer.The Windows service runs under a network user that has access to the network printer. Before I print I check if the printername (including network path) is ok by looping through the available printers.
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Jul 23, 2009
I am trying to communicate with a Windows service on a remote machine on the network but i keep getting an exception saying the following: "System.InvalidOperationException: Cannot open Service Control Manager on computer 'machine001'. This operation might require other priviledges. ---> System.ComponentModel.Win32Exception: Access is denied.
[Code]...
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Sep 18, 2009
Is it possible to have a dotnet windows service which monitor other services and upon stop of any service, the monitoring service would be able to start the stopped service.
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Jul 7, 2009
In the past I had the indexing service installed on a Windows Server 2003 and used it to index files for my website. I did this by executing an OleDbCommand with a query and a connection string.How do I accomplish the same thing with the new "Windows Search Service" (Windows Server 2008) by using VB.NET? Does this work the same way so that I only need to change the Provider name which has been "MSIDXS.1" up to now? Case true, what is the new Provider name?
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May 3, 2011
When you create a Windows Service, you create a list of the services you want to start. The default is this:
ServicesToRun = New System.ServiceProcess.ServiceBase() {New Service}
Can you have multiple instances of the same Service class (that bind to different addresses or ports), like this?
ServicesToRun = New System.ServiceProcess.ServiceBase() {New Service("Option1"), New Service("Option2")}
Or will that cause problems? Should we use two different classes instead?
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Jul 3, 2011
The code below is able to process a path such as, "C: est est.txt". And open its root, "C: est". But how would you highlightselect test.txt? Do I need to work with the windows shell specifically.
vb.net
Try
Dim item As ListViewItem = Me.ListView1.SelectedItems(0)
[Code].....
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Mar 3, 2009
We have a server with multiple services written in .Net 1.1 and 3.5 running on a Win 2003 server. Everything runs fine, but when we stop a certain service, an unrelated service stops. I have checked and neither has any dependencies. The service we stop is in 3.5, and the unrelated service that incorrectly stops is in 1.1. We get no error messages, nor event log errors, so we are baffled.Does anyone have an idea as to what may be causing this?
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Nov 17, 2011
I am using this method to install windows service
processInstaller = New ServiceProcessInstaller()
serviceInstaller1 = New ServiceInstaller()
serviceInstaller2 = New ServiceInstaller()[code].....
How can I get the account name after whenever the service is started ?
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Jun 9, 2012
I am having a namespace extension implemented, which is visible in "MY Computer". I want to write automated test cases to browse through the same. I am able to open the explorer window till the namespace extension. as -
Process.Start("explorer.exe", "shell:::{CLSID of my namespace }")
next I want to search for a particular folder name inside the window opened. For example if i give input as "temp", then my mouse should move to "temp" folder in the namespace explorer window. then I double click on the mouse's current position and enter that folder. next i give input as "doc1.doc", then my mouse should be able to locate & move to "doc1.doc" file. Also getDirectory or GetFile etc APIs won't work because I don't have a standard drive associated with my namespace & don't have a relative path either.
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Jun 25, 2009
I am using a windows service and tried to copy some file as below,System.IO.File.Copy("Z:abc.txt", "C:helloworld.txt")Note: Z: is a map drive from another host in 1 LAN (same LAN)I got error, "Could not find a part of the path 'Z:abc.txt'."But when I tried it at a simple application using windows application, it works with the same code as above.
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