Registry Permission - Activate / Deactivate The Optical Reader At Startup
Feb 29, 2012
I'm quite new to vb.net and I was trying to develope something that can activate/deactivate the Optical reader at startup, so I wrote:
[Code]...
but obviously it's not that simple, I read I need registry permission not to have access denied to the specified key, I imported the system.security.permission namespace and I tried some constructors but without any results...anyone can point me to the right procedure?
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Jul 23, 2010
We have a VB 2 VB.Net migration MDI application , we have a messagebox in Deactivate event ,once you click Ok for Message Box ,the focus must be set on to the Child Form which is active.
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Apr 21, 2011
I am already overriding the SnapLines property in my ControlDesigner-derived class to manually forward out various snaplines from the child controls of my control -- the text baseline (pink) snap from the labels and comboboxes; the text inset snap from the labels; the top, bottom, left and right snaplines from the comboboxes. Those snaplines activate when the control itself is moved around on the form and when other controls are moved around it.
What I need is the ability to tell the designer to activate the snaplines and then deactivate them while I'm doing an internal move or resize of the underlying controls.My comboboxes are resizable through overrides of OnMouseDragBegin, OnMouseDragMove, and OnMouseDragEnd in my control designer. The magic bullet I'm looking for is something I can call in Begin to tell the designer to show the snaplines and something in End to tell it to stop.
Allowing people to resize and move the internal controls at design time is kind of useless if they don't show snaplines for each other or for external controls.As with stuff like this, it's incredibly hard to search for. I've found one post on a forum where someone asked this exact question that had (of course) no responses. That's about it.
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Nov 28, 2011
I've recently run into an unexplainable issue regarding a windows form application I am working on. I've managed to isolate the issue to a single line of code whereby a single TabPage is removed from a TabControl, leaving no tabs left in the TabControl's collection. What happens next is a bit mystifying: my application proceeds to enter a state in which the main form's Activate event is fired subsequently followed by its Deactivate event. As a result, no matter where I click on the form, the application will activate for a split-second then immediately deactivate itself, thereby causing me to be unable to interact with any other GUI controls on the form. I thought maybe another thread is trying to interact with the deleted tab object, but the tab is created and destroyed on the same main gui thread. Does anyone have any insight that may point me in at least a new direction? Stepping through the debugger to the point in code where the tab is removed does not cause any exception to get thrown, so at first glance there doesn't appear to be any coding issues going on (although I would not be surprised that is actually the case!).
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Feb 28, 2012
Modifying a registry key we could 'write-protect' our USBs, and I wanted to make a program that would do such but I am getting a permission problem in adding a registry key to the local machine. My development machine is Windows 7 Ultimate 64 bit but I would want it that it will be able to run on other OS like XP and 32 bits. My thought is that I will use autorun and run my program so that upon insertion it will become 'write-protected' and be able to re-enable it also using the program.
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Sep 24, 2008
how would I accomplish saving a large piece of data, using the Stream Reader for the Line-by-Line, while keeping the carriage return line feeds in there?
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Feb 14, 2012
I want to change this registry setting in windows vista and 7 ("HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesUSBSTOR","Start",4) by clicking a button.[code]how do i change ("HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesUSBSTOR","Start") value to 4..How do i request administrative privilages for my aplication to change registry setting when it starts?
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Jan 25, 2009
I want to check the Registry Permission of Subkey programmatically.Whether the Subkey has Read permission,Write Permssion, Delete Permssion.
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Feb 14, 2012
my program read and writes into registry and has been working fine, until today when i tested it on a new server i got this error request for the permission of type system.security.permissions. registryPermissions, mscorlib,version=2.0.0.0. i checked the registry permission and made sure all allows are ticked.
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May 28, 2012
I would like to create a program that will query all security permission to a given registry path. I attached the image so you have overview. I'm new to VB.Net 1/10 to rate my skill here. This will all the output I will put the output in a listbox or list view.
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May 20, 2011
this is the code i am using to add my program to registry startup
Public Shared Sub AddStartup(ByVal Name As String, ByVal Path As String)
Dim Registry As Microsoft.Win32.RegistryKey = Microsoft.Win32.Registry.LocalMachine
Dim Key As Microsoft.Win32.RegistryKey =
[Code]......
however, when i deploy the application and install it....it doesnt work because it says "Requested registry access is not allowed", which i figured it would probably do...
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Jun 9, 2011
im trying to make a vb 2010 program to startup with windows with that is the user choice and i have got this code from the net:
[Code]...
i havent got a clue on why its opening on the wrong path at startup, but if i close the app and i open it manually by its desktop icon everything is fine again :S
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Feb 21, 2011
I am making a setup application and I need to know how to properly add a registry key so the application startup with windows. I have made what you can see on the image but I get an error when my PC restarts.This setup is nothing special I just need to make the registry key properly.
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Sep 22, 2010
I took the following method to make a registry key in my setup project. When I run setup, it says Could not write value Run to the key. Verify that you have the sufficient access to that key, or contact your support personnel. "Below I have copied the code that I took from the forum After you have built your own application project, Right Click the "Solution" to "Add a New Project", of cource the project type is Setup and Deployment Project.
Add the "Project Outputs" into the setup project, here, it can be the your own application,Most of important step: Open the "Regstry" view of the setup project, then add new keys in "HKEY_LOCAL_MACHINE" according to the information I just mentioned. Below the key "Run", you can add a new string value. Then in the value's "Properties" view, enter "[TARGETDIR]YourApplicationName.exe" .Install your application using the msi file created by setup project, then restart your computer, you can see the result.
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Jul 6, 2009
I want my application to startup thorugh registry if the specified checkbox1 is checked and to delete it from registry if the checkbox1 is not checked.With the following code im able to create registry but, im unable to delete it.I want it to work like it works for softwares for e.g Utorrent.
Code:
Private Sub CheckBox1_CheckStateChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckStateChanged
If CheckBox1.Checked Then[code]....
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Aug 2, 2011
Has anyone got some source code or advice on getting my app to be able to list all autorun items i.e. from HKLM/Software/Microsoft/CurrentVersion/Run (and other locations) and the start menu start up group - same sort of info as say msconfig or autoruns
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Jul 28, 2006
I was recently pursuing code that would allow me to read machine text off an image. The text will only consist of characters a-b, 0-9 and a few special characters (+,=,-,@,&). I have pursued a few third party OCR controls however all require licenses to be fully functional, would anyone know of any third party OCR controls that does not cost anything? If not is there anyway i can build my own OCR control that will read machine text?
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May 23, 2009
I want to make 2 dynamic comboboxes; The first will list all the hard-drives/thumb-drives etc, the second will list all the CD/DVD drives.Beneath each combobox there will be a set of buttons that control the selected drive:Beneath the hard-drive combobox there will be two buttons: one is "open" (will open the select drive in explorer) the other is "remove" (checks if the selected drive is removable and if so safely removes the drive).Beneath the CD/DVD combobox there will also be two buttons: one is "open" (will open the drive's contents, if present, in explorer), the other is "autorun" (will execute the autorun for the disc).
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Oct 23, 2011
however, I am stuck at BinaryReader.actually this is what i am trying to acheive through VB.NET.say for the following file type :
JPG file = FF D8 FF E0
BMP file = 42 4D BE 4E
PNG file = 89 50 4E 47
GIF file = 47 49 46 38
the above are the 4-byte headers in Hex(raw) I need to read these headers of any given file using OpenFileDialog using Button1_click event,on selection of any given file(*.* filters ON)it should use the BinaryReader and look for only 4-bytes starting from offset 0, and it should not go to EOF marker (-1).and have a variable to hold this 4-byte header value, to run this in a database table which will check the same header value in the table and would display the corresponding extension of the file. from the table.
I can do this using case, if then...etc.however, I have to do it using Database and also i need to check for testing purpose to use MsgBox() to display this variable which is holding the 4-byte header.however, the MsgBox doesnt allow anything other than String.
PS: I tried studying the methods like:
FileOpen/Seek/Peek/ReadBytes().
but still not sure how to get them work.
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Apr 3, 2009
My.Computer.FileSystem.DeleteDirectory("folder location here", FileIO.DeleteDirectoryOption.DeleteAllContents)
I created a program which was deleting a particular directory for me. The program was compiled and working. Today I run the same program...did not do any system updates and now it won't delete my specified directory. I ran tests to make sure the directory is there when testing...I keep getting access/permission errors.
I rebooted system, ran my application...still gave me error. I turned off Windows Defender...still got error. If I manually delete the directory...no problem.
Is there a way to get system permission to delete the directory? I am being given an 'access denied' error...I do not have permission. I tried running my application as administrator...no good. - VB 2008 Express - VISTA OS
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May 18, 2011
I want to launch a application called Foxit Reader pdf Reader .I know System.Diagnostics.Process.Start(path) can do it but . Requirements are Foxit Reader should be installed on machine.Now if it is installed how to serarch for the path of its Executable to provide the parameter as I can not hardcode the path for different machines.
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Feb 28, 2012
I am having an issue with both Adobe Reader and FoxIt Reader when trying to print a PDF document. Both issues are different but a solution to either one will allow me to fix my issue.The issue I am having with Adobe Reader when trying to print using the following code is that it will not print it to the network printer I specify but just the default printer.
Dim AdobeReader As New Process
AdobeReader.StartInfo.CreateNoWindow = False
AdobeReader.StartInfo.Verb = "print"
[code].....
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Jun 20, 2010
I can hide my startup form (or make it appear hidden) on startup. I can start my app on windows startup--through registry values--if the user checks a checkbox.
But if the app starts up on windows startup, I want the form to be hidden, so the program can just keep working without bothering anyone. If it starts up because the user started it, I want the form to be showing, because the user probably wants to change some settings or something.
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Jan 25, 2010
I am trying to create a winform that will allow me to close when the form either loses focus or deavtivate. When I do Me.Show, it will call the deactivate? Is that right or is weird? The way took it was it fires when it either looses focus or is no longer the active form.
Also it seem like I have to click the form in order for it to work right. I tried Me.focus and that does work the way I expected.
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Jul 8, 2010
How do i deactivate sorting in my dgv after a certain button is clicked?
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Aug 10, 2009
I am working with Vb.net and have a form with a combo Box. On load the form is loaded with one of the following details depending on what is stored in the database; Cancelled, Processed and Failed.
TxtColStage.Items.Add("Cancelled")
TxtColStage.Items.Add("Processed")
TxtColStage.Items.Add("Failed")
Then I have an update button and when the user drops down the list he/she can select between Cancelled/Processed/Failed. I want to be able to grey out or disable Processed and Failed, so that when the user updates the field he/she can ONLY update with the Cancelled option ONLY.
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Mar 5, 2009
How do you deactivate the ContextMenuStrip when you right click your mouse. Because I have a checkbox that the ContextMenuStrip will not display if it is not check.. If it is check, the ContextMenuStrip will be activate again.
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Dec 29, 2009
how to deactivate the x button that close the application?i have vb 2008 standard edition
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Apr 3, 2011
This is a non-MDI windows application. I have a home form containing a panel named Panel1 and two buttons btnForm1 and btnForm2. Clicking btnForm1 and btnForm2 opens up Form1 and Form2 respectively in Panel1. Before a form is opened in Panel1, all opened forms in Panel1 are cleared. The code follows:[code...]
In which events should the above lines be written? In MDI apps this could have been accomplished by including them in Form_Activated and Form_Deactivate events respectively.
But here neither Activated nor Deactivate events fire when you open forms in frmHome.Panel1. Instead of Activated and Deactivate you can use Form_Load an Form_FormClosed events but they will only merge/unmerge menus if existing forms are closed before opening a new form in the panel.
But as I sometimes need forms to be opened and closed keeping existing forms opened, using these events won't fulfill the task. Even the GotFocus and LostFocus events won't work. So I want Activated and Deactivate events to be fired or some other means by which the menus and toolstrips can be merged/unmerged when the form gains/looses focus respectively.
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Jun 18, 2011
In my program I've used a text box and KeyPreview is True.When press the Enter-key i hope go to next row but called the default key?
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