System.file.io In Windows App Running On Windows 7?
Jan 25, 2010
Just placed out first Windows 7 PC in to a production environment and noticed that system.file.io gives errors about file not existing when using mapped drives to a network server. I can access the file through Explorer on the PC. When I chnaged the path to UNC using the IP and drive name instead of the mapped drive letter all works fine. Strange thing is for a few days during the testing period the application ran on Win 7 using the mapped drives in the file.io path. Not sure why it stopped working or how it worked in the first place. Question is on Windows 7 it seems like it doesn't like mapped drives in system.file namespace. Is tis true or are there more steps I need to do in addition to this This works as is, but when I change \172....vol1 to r: it bails, hence the thinking Win 7 is stopping the access to mapped drives.
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Sep 25, 2011
I am building a Setup project for a Web system using Visual Studio 2008. I upgraded my development machine from Windows Xp to Windows 7. The problem started with Windows 7. Whenever I try to build I get the above error. I ve tried several solutions given online but I ve failed to get a solution. When I transfer the system to a machine running Windows Xp or Windows 2003 Server it builds successfuly.
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Mar 16, 2009
With the following imported namespaces in my project :
Imports System.Windows.Forms
Imports System.Reflection
.. I cannot add..
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Aug 27, 2010
We have a windows service running under a network account that calls and runs an ActiveX exe. The exe is running under the local system account, not the network account of the service.
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May 15, 2012
I have seen this happen before but am not sure how I resolved it in the past. On runtime the controls of my form change from the windows 7/vista format to an older version format as shown in the attached image.
How to display the controls in the format on the left (new windows format)
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May 7, 2009
I am trying to write a Windows Script that will allow me to monitor the following: That 2 x seperate but specific processes within Component Services "Running Processes" list are currently running and have not reset within the past hour. If I already know the PID, then I can retrieve the CreationDate (I assume which I can use to check for restarts? or is this the actual process creation/installation date) for each specific process, however if a restart occurs the PID will change and my script needs to know what the new PID is without me telling it!
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Jan 28, 2010
I have a utility that is a simple exe that is not installed compiled with VS2005 and works well. But when I upgraded to VS2008 the utility can no longer locate files in the active system folder. I have UAC turned off and am logged in as the Administrator and it still can not locate a file that I can see in Windows Explorer. The file I am looking for is PakMgr.exe.
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Jun 12, 2011
i need to get data from checkbox in a groupbox. in the groupbox, it also have a label. so my coding as below
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Apr 6, 2011
Not sure whether this is possible, but I'm creating a file encoding applcation. When a file is decoded, it is saved temporarily in a temp directory, after which it can be opened regularly. However, I actually need to be certain the file is removed as soon as the application that has opened it, has closed it (e.g. has shut down). Otherwise, the decoded (secret) file is just hanging in the temp directory without supervision.
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Jun 19, 2012
I'm attempting to use waveOutSetVolume from coredll.dll to gradually increase the audio volume from silent (or near silent) to maximum.
Most of the code examples I'm finding show some predefined set points for Off, Low, Normal, Medium, High, and Very High like this:
Public Enum Volumes As Integer
OFF = 0
LOW = 858993459
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OK, and here's some API documentation which doesn't make a lot of sense to me in this particular context. What is low-order word and high-order word and how can they both exist in a single value?
· dwVolume New volume setting. The low-order word contains the left-channel volume setting, and the high-order word contains the right-channel setting. A value of 0xFFFF represents full volume, and a value of 0x0000 is silence. If a device does not support both left and right volume control, the low-order word of dwVolume specifies the volume level, and the high-order word is ignored.
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Jan 24, 2012
I am trying to build a simple AutoUpdate application using VB.NET. It was quite simple. That is, I put the newest ZIP file in my hosting site, and then download it using WebClient.DownloadFileAsync. After it get downloaded, I extract it using [URL]
But each time I run the unzip.exe using Process.start, Windows 7 always show Open File Security.
Is it possible for VB.NET to bypass such security restriction?
Btw, this is my code of using WebClient.DownloadFileAsync, in case any one google about it and landed on this page :
Public Class AutoUpdate
Dim installationFolder As String = "C:Program Filesxyzabc"
Dim updateFileNameTarget As String
Private Sub btnStartUpdte_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStartUpdte.Click
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Sep 8, 2010
I have the code which checks if there is a selected tab
Private Function GetBrowser() As WebBrowser
If TabControl1.SelectedTab IsNot Nothing Then
For Each c As Control In TabControl1.SelectedTab.Controls
If TypeOf (c) Is WebBrowser Then
Return c
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Nov 13, 2009
A Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
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May 9, 2012
I developed a c# .net windows application and create Set-up for it on windows XP Professional OS .
And Try to Run This Set-up on to Windows 7 OS(32 and 64 bit Both) for installing this application onto Windows 7 OS Machine But Installation Failed and Throw Code Error: 2869.
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Apr 28, 2009
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
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Dec 14, 2011
how can i import System.Windows.Forms in my asp.net class file?
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Jul 26, 2011
if we don't mention the decoding what decoding will they use?I do not think it's System.Text.Encoding.Default. Things work well if I EXPLICITLY put System.Text.Encoding.Default but things go wrong when I live that empty.So this doesn't work well
Dim b = System.IO.File.ReadAllText("test.txt")
System.IO.File.WriteAllText("test4.txt", b)
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Feb 5, 2010
how to get the current Style of the Windows Xp programmatically. At the program startup I need to get if Windows is running in XP Style or in Windows Classic Style, so I will set my buttons Flatstyle property to flat or standard.
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Aug 30, 2011
We are using a web browser to show a pdf file located in a folder on the network. The code looks like this:
System.Windows.Forms.WebBrowser.Navigate(New Uri("\hostpath ofile.pdf"))
This works fine, but now I have to use a specific user to access this file and I don't know how to include the user name, password and domain in the URI. Is it posible to add user credentials to the URI? Can I use another variant of Navigate method to accomplish this?
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Nov 1, 2010
Could anyone provide me with sample code for using a WAV file as the input to the Windows speech recognition software on my machine (Windows Vista)?
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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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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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Jan 23, 2012
I have created a windows service in VB in visual studio 2008. The purpose of this service is to copy files from one network drive to the UNC path for a sharepoint file location. It works properly on a Windows XP machine, however when I installed it on Windows 7, I am now getting Access Denied error messages. In troubleshooting, I tried to simplify things to see if I can see the directory that I'm trying to write to, and the System.IO.Directory.Exists is returning false. I am able to see other netowrk shared drives, just not this particular one, and it appears to only be an issue from my Windows 7 machine, as I can do this with a Windows XP box.
I have also tested this code in a Windows forms application and it will work as expected. It appears only when I move to the service.
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Mar 12, 2010
When I do this
Public Class cInherits : Inherits Panel
I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.
How do I inherit?
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May 5, 2009
We're writing a Windows client application in VB.NET. On the first launch of the application it loads a local HTML file "User Guide" for the user to get acquainted with the new software. There is also a menu option to access the content which also produces the same error. Whenever the page is launched, a dialog box appears stating that "The system could not find the specified file.", and then the browser windows loads the content. This is IE8 specific, as we previously tested with IE6 and 7 as well as Firefox with no problems.
Apparently this behavior is also happening within Outlook 2007 for some of our users whenever they click a link in an email, but only on the first link they click. Also, one condition for the error to appear is that no IE8 window is currently running, otherwise another tab opens and loads the content just fine. We get this error on XP and Vista.
[URL]
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Jan 23, 2010
Private Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
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Oct 20, 2010
Win7 64 bit; fully patched VS2008 targeting FW2.0; VB.Net; running in Debug Mode (not tested in Release mode)I have a resonably complex app which I am refactoring a bit. As part of that, I relocated some code from a subroutine into a Click Event Handler. The Event Handler will, late in the handler, call the, reduced in function, subroutine. The point of this is thatNow when I click the button associated with the modified Handler I get:A first chance exception of type 'System.AccessViolationException' occurred in System.Windows.Forms.dll<br />With Error System.AccessViolationException Attempted to read or write protected memory.This is often an indication that other memory is corrupt.
at MusicManager2009.frmMain2.cmdLoadAlbum_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
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All functions of the app, except those that start from the buttonclick in question, work as before in the problem version.The problem persists after rebuilding the entire solution, after restarting VS, and after rebooting the PC.
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Feb 19, 2010
When I run my project I get "An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll"
Public Class frmViewReport
Dim objForm As New frmViewReport
Private Sub frmViewReport_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
objForm.ViewReport("C:a2.rtp", , "@parameter1=test�mter2=10")
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Nov 16, 2009
I have the following code running, the first time I change the selected index, everything runs smoothly. However, if I try to change the selected index again, nothing happens and the subcategories combobox values do not change.
Private Sub cboMainCategory_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboMainCategory.SelectedIndexChanged
'* make sure the combobox is fully loaded
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May 6, 2009
I keep getting an eroor this error says: An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in system.windows.forms.dll Additional information: Specified argument was out of the range of valid values.
Option Strict On
Public Class frmWeeklyReport
Inherits System.Windows.Forms.Form
[code].....
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