Handle Non Existent Registry Key?
Oct 15, 2009
I have a program that implements various registry changes. The problem is depending on the version of Windows the registry entry may not exist. If that is the case an error is thrown since it the registry key does not existThe code is below that actually calls the changes if the checkbox is checked or unchecked. The functions contain the registry changes which are all correct the problem is the error handling I have implemented below it seems to be causing a problem in te program where the rest of the code afterwards is not getting executed properly. What is supposed to happen is if the checkbox is checked it will run the disable function. However if that registry key is not found the program will give a message with a box saying that item does not exist and then it will automatically uncheck the box and turn the checkbox text red. There is more then one of these also. It does do this however it doesn't seem to execute the rest of the checkboxes after it in the code.
If the box is unchecked it will uncheck the checkbox thereby enabling the function
[CODE If chkMyApplicationsService.CheckState = CheckState.Checked Then
Try
[code].....
View 18 Replies
ADVERTISEMENT
May 11, 2009
I have a section of code that will compile perfectly using VB Studio 2003, but it throws a InvalidCast Exception under VB 2005/2008. The code throws an Invalid Cast exception at KeyHandle = e(field.GetValue(KeyToMonitor) line below, and as far as I can tell it is because the variable Field is passing the string Microsoft.Win32.SafeHandles.SafeRegistryHandle rather than an integer. Is this because of safe keys in VB 2005 and 2008?
how to call the handle of the registry key opened in a way compatible with Safe Keys? I'm using the code to notify when a registry key is changed using RegNotifyChangeKeyValue.
Private Function WaitForChange() As Boolean
Dim notifyEvent As New Threading.AutoResetEvent(False)
Dim KeyHandle As IntPtr
[Code].....
View 1 Replies
Oct 22, 2011
I am trying to search and XML file for a variable on a specific node. Following a tut I can setup a search for the node correctly and it returns its name - but it doesn't find any values for any children of that node.
I get this error:
Faster_2 is neither a DataColumn nor a DataRelation for table Skill. Area Highlighted:
ListBox1.Items.Add(dv(index)("Skill_Name").ToString() & " " & dv(index)("Faster_2").ToString())
Here is my VB
[Code].....
View 2 Replies
Mar 15, 2011
Im getting an error right now for this code, and I'm wondering if it's me, or VB2010 has changed?
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Left Then
[code].....
View 4 Replies
Aug 19, 2010
This is the code i have so far (no i didn't write it all by my self took help from net) but i am unable to understand why i am getting this error
Imports CookComputing.XmlRpc
Public Structure blogInfo
Public title As String
[code]....
error i get is "Invoke on Non-Existent or Non-public proxy method"
View 1 Replies
Jun 4, 2011
I've tried to run a program that requires the Flash.ocx file to write a registry. Without the file I get a database creation error and the program closes after I close the error. The suggestion [URl].. does
not work as I have tried to do this twice now as the solution center suggests.
View 1 Replies
May 23, 2012
There is a very strange problem with a Windows Service I am working on that I would like to understand why it occurs. The service loops every 5 minutes and then within that loop it loops through keys containing webservice URLs that are numbered such as:
<add key="URL.1" value="http://dummy1.com/Service.asmx"/>
<add key="URL.2" value="http://dummy2.com/Service.asmx"/>
<add key="URL.3" value="http://dummy3.com/Service.asmx"/>
The code that does this check is:
If String.IsNullOrEmpty(AppSettings("OM." & intCount & ".Name").ToString) Then
When it hits a key that doesn't exist an exception is thrown and the service stops and waits for 5 minutes until the next loop.This usually works great but every week or two the Windows service will crash on that line without any Exception. The application log has a line from before that line but nothing after, none of the Try Catches are hit (the main one is catching the base "Exception" class).In the Event Log for Windows is the following:
Faulting application name: MyService.exe, version: 1.1.2.0, time stamp: 0x4fa22a24
Faulting module name: KERNELBASE.dll, version: 6.1.7601.17651, time stamp: 0x4e211319
Exception code: 0xe053534f
[code]....
The weird part is that this line of code is executing fine 300 times a day for at least a week which is around 2000 times before that one time it causes a full crash of the application. why this is occurring? I have changed that line of code to not rely on Exceptions and it has been working fine for a week now with no crash so could be something to do with too many Exceptions - maybe causing a stack overflow?
View 1 Replies
Jan 21, 2009
Error is coming Registry Access is not allowed.While Opening a Key.
Code:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
NewDelete("HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRun", "Sonia")
End Sub
[CODE]...
View 1 Replies
Jan 31, 2009
I've had a bit of a look around the net and on the forums but I've yet to find an answer to my question. I've got Visual Basic 2008 Express and I'm trying to write some registry entries, I can write strings fine just using
[Code]...
View 1 Replies
Mar 23, 2009
I wrote an application to handle a joystick with directinput. It works fine if it uses the handle of the main window but it doesnt happen the same if the handle is the one of the component that contains the joystick's operation.
I mean:
main form handle: 15
component handle (which is inside the window and the joystick needs the focus of this component to work): 25
It always work if the handle i initilizate the device is the main form (15).How can i use only the handle of the component?
View 1 Replies
Jul 14, 2011
Currently, I am try to get the email addresses that have been saved or stored by the user of the computer. This isn't the emails that the user has sent or received, or the contacts he/she has in his address book. Just simply the email accounts that have been accessed from the computer.I know that there are some locations stored in the registry that have the email account. The email addresses that are used on the current computer. I just can't seem to find them on my computer.I am not sure if the registry is the only place to find it or if it stored on the web browser such as internet explorer or google chrome.
View 1 Replies
Aug 27, 2008
I am writing an application that connects to a specific com port. This com port can change depending on how many physical ports are on the PC, and if other USB devices have installed com ports before this one.
I have the communication to the com port all working great, but I need to get the com port description not just the "COM#" which is all I currently get.
I found in the registry where the description is stored but am having trouble doing what I need.
In this key:
Code:
HKEY_LOCAL_MACHINESYSTEMControlSet001ControlClass{4D36E978-E325-11CE-BFC1-08002BE10318}
there is a varied number of sub keys. The are numbered 0000-NNNN depending on how many ports you have. Inside each of these keys, there are multiple values, although I am only interested in one or 2 of them.
My problem is, that I do not know how to get a list of the subkeys (the 0000-NNNN keys/folders) from the original key I posted. I have looked through a few registry tutorials, and I can view the default value in the listed key, but I could not find how to list the subkeys of the listed key.
Does anyone have any sample code they could share that shows how I can get a listing of subkeys, and then run through those subkeys checking for a specific value in one of the strings contained in the subkey?
I am using VB.net 2008 and Windows XP.
View 1 Replies
Jan 21, 2012
I have several programs that must write to HKLM in XP and Windows 7/64 Pro.The programs work in VB6 but not in VB.Net 2008 on target machines. It does works on our development machine. [code]I just cannot figure out why VB6 works but .net doesn't and fails only on the target machine not the development machine.
View 2 Replies
Mar 16, 2010
How can I change the permissions of a registry key. I want to allow anyone in the "Users" group to be able to write to "SOFTWAREMyApp".
View 2 Replies
Dec 2, 2011
I want to get every single registry Name and value, which lies in HKEY_CURRENT_USER....Run(for getting and THEN deleting them to prevent run those programs at windows start). This is just for getting names.
Imports Microsoft.Win32
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click[code].....
Well, this isnt working, when i run it in the vb and click button, it says system missing member exception: IWshShell3 hasnt been found.
View 1 Replies
Feb 11, 2010
Does anyone know how to use the registry section in Inno Setup to add a registry key that make a program start with windows when a Checkbox is checked in the setup wizard? If anyone know please step forward. I am getting near the launch of a program and it would be nice to include this feature.
View 5 Replies
Mar 23, 2010
how do i write to the windows registry and read from the registry?i'm using windows 7 - 64 bits, and visual studio 2008.
View 1 Replies
Oct 17, 2009
I need to be able to change a line in the regisrty an am not sure how to go about it, i have searched but nothing i can understand at the moment.
Code:
HKCU,"SOFTWAREMicrosoftInternet ExplorerDesktopGeneral","Wallpaper",0x00020000,"%SYSTEMDRIVE%WebDreamSceneBeach.html"
The part in bold is the part i need to be able to change as i am having to write a little program to change the background on the desktop.
I should be ok once i know more on how to do things like this.
View 2 Replies
Oct 27, 2010
I just bet the answer to this question already exists, however I saw no search mechanism under the forum. Anyhow, I would like to change registry data, and this code is asking for an instance to the object.
Dim RegKey As RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HKEY_CURRENT_USERSoftwa reAnyDWGSoftwareDWGtoPDFProSettings", True)
RegKey.SetValue("OutputPDFFileOpt", 1)
Finally, I want to apply this setting to the program on four different computers (local, and three others on the network).
View 1 Replies
Aug 4, 2011
I wrote an application to manage several installers and I wanted to throw in some registry settings as well. Unfortunately the following code is not writing to the registry, nor is it returning any exceptions.I'm running Visual Basic 2010 Express as administrator using Windows 7 64 bit, I can manually add the values, and I can add them from a .reg file manually but not even by calling the .reg file as a new process (it asks for permission, says it succeeded, but nothing changed).The key already exists, all I need to do is add two values.
My.Computer.Registry.LocalMachine.OpenSubKey("SOFTWAREMicrosoftInternet ExplorerMAINFeatureControlFEATURE_BROWSER_EMULATION", True)
My.Computer.Registry.SetValue("HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerMAINFeatureControlFEATURE_BROWSER_EMULATION", "uwgm_client.exe", 32768, Microsoft.Win32.RegistryValueKind.DWord)[code].....
View 3 Replies
Aug 13, 2011
Currently I am using this code to check for Firefox on a 32 bit machine
Code:
Dim Firefox32 As String
Firefox32 = My.Computer.Registry.GetValue _
("HKEY_LOCAL_MACHINESOFTWAREMozillaMozilla Firefox 5.0in", "PathToExe", Nothing)
MsgBox("The value is " & Firefox32)
If the value is found then the above message is fine, but if the entry is not found I want it to display a message like: "Firefox could not be found" instead of "The value is: " What code would make this appear?
[Code]...
View 4 Replies
Jul 25, 2011
Possible Duplicate: Can .NET intercept and change css files?
I have configured IIS6 to get .NET to handle css files.I did the following steps
Launch IIS Manager Right-click on Default Web Site Click on the Home Directory tab Under Application Settings click on Configuration.Add a new association for .css and map it to .NET executable:
C:WINDOWSMicrosoft.NETFrameworkv2.0.50727aspnet_isapi.dll
How can I check if this is working, i.e. I want to change the default style of a page depending on the url, i.e. if the referer url is http://intranet, it should continue to use the old existing style style1.css, if the referer url is http://intranetv2, it should use the new style style2.css.
View 2 Replies
Aug 6, 2009
I can't get a handle on the syntax. Can anyone give me a simple demo?
View 3 Replies
Jul 2, 2009
I am trying to get a handle on the correct way and easiest way to do things. By easiest I am not talking about being lazy just accessing and modifying later on. I have started using my own classes and such but I have a few questions. Sometimes I want to create a control on the fly through code instead of using the designer. Should I create this control in the main form file or in a separate class? If I make it in another class it seems harder to access later on. Then again if I dont know that the control is going to be created(user clicks a button to add a control) how can I access it? Also it seems alot harder to access certain things when it is in another class. For example if I create a new window in a class and then want to check if it is there or not it is alot harder to do.
View 5 Replies
Feb 13, 2012
Are there anyone know how to get the handle of a standard Combobox using API?
View 3 Replies
Dec 13, 2011
How do i get the handle of a NotifyIcon?
View 4 Replies
May 8, 2009
I need the intPtr for a form. Control.FromHandle(control) gives me the control from a handle, but I need the opposite--get the handle from a control. How do I do this?
View 2 Replies
Apr 27, 2009
I need to get the handle of a control as an IntPtr to pass to a screen capture class in vb.Net 3.0. Tried this but get an invalid handle exception.
Dim hwnd As IntPtr = Runtime.InteropServices.GCHandle.Alloc(CanvasMap)
View 2 Replies
Jan 24, 2012
I am trying to create a small utility that tracks desktop usage in detail, to the level of individual text boxes etc.... in other applications. However, it is proving quite tricky. I thought I had it nailed using the Windows api. The below code is just a snipet of the code but essentially it provides me the handle of the control that the mouse is over. I thought from here, it would be easy to to the same thing but to provide the handle of the control that the cursor was actually clicked on, for example, if someone is filling in a text box in an application, they would not necessarily move the mouse to get to the text box, they may tab to it. Does anyone know if there is a way to get the handle of the control that is in use?
Private Sub Timer1_Tick(sender As Object, e As System.EventArgs) Handles Timer1.Tick
Dim ptx As Integer = Cursor.Position.X
Dim pty As Integer = Cursor.Position.Y
[code]....
View 4 Replies
Apr 12, 2011
I need to get the handle of a window with a specific name from my vb.net application. The form isn't actually from my application.
View 1 Replies
