VS 2010 - Registry Key Exists
Nov 3, 2011
I'm having a hard time determining if a registry exists or not.
This is what I'm trying:
CODE:
The registry key exists on my PC, so I'm having a hard time debugging it on another PC. When it threw the error, I commented out the last block of code to see if I was checking the key wrong or if it would throw the error just on the variable declaration.
Which is did. I get why it did. You can't .Open a key that doesn't exist. However, I looked it up and everyone is recommending that we do it this way. But this way doesn't exist.
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Feb 23, 2010
I need to figure out if a registy key exists under the HKCU hive. If the key exists do this, if not then this.
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Sep 15, 2006
I am trying to figure out how to check if a registry key exists. If it does, do nothing, if it doesn't, recreate it.I've found numerous resources on the subject, and have made progress, but one little thing is stoping me.[code]The problem is that this reports "Not Found", even though the key 'regkey' exists in the registry. Also, if I remove 'regkey' from the code, it reports "Found". So it does find the subdirectory in the registry.My question is, how do I check to see if the 'regkey' exists? I'm running Windows XP Pro SP2.
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Jul 10, 2009
I want my app to check on form1.load if registry exists here:
(
"HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRun")(This is to launch app at system startup)
[code].....
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Oct 12, 2011
I know what instruction to use to check a subkey exists within a node, I can't find how to get VB.Net to check if a node itself exists. Besides the standard My.Computer.Registry.GetValue(), this page mentions using "Imports Microsoft.Win32" followed by "registryKey.OpenSubKey" to check that a subkey exists, but is there a way to check that node exists?
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Apr 17, 2012
I have the following
If Dir("C:Test.txt") <> "" Then TextBox1.Text = "File exists" Else TextBox1.Text = "File does not exist"
End If However, I'd like to use this alongside a DataGridView.
Basically, when the application runs, the user selects a folder for file storage. Then, in the DataGridView, the contents in each cell of Column 1 become the file name. In short, the contents of a cell, plus the selected folder for file storage, becomes a whole file path.I need to use the above code to get my application to check if the file exists, and if it does, it should place the text "File Exists" in column 2 of the DGV.
I can't work out a way for the DGV to be "continually aware" if files have been created and so to update automatically without the user having to press buttons etc. As soon as the file exists, the correct text should be placed in Column2.
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Oct 19, 2011
How can we check if a Drive exists in the system
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Jun 15, 2012
How do I check if a directory exists?
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Nov 27, 2011
I need to find out if particular library exists on the users PC. Specifically, d3dx9_41.dll.Typically, this file is in the System32 folder and I've confirmed that its actually there on my dev machine.So I thought I could just use the Exists method of the File class. But, it always returns false. I even tried using the LoadLibrary API, but it always retur
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Jun 2, 2011
I have a security timer to check if the directory exists which I want to access after it's been created by an external application, but what I have done doesn't seem to be the solution although it sounds like a very normal solution to me.
What I have done:
1) External application gets run which is going to create the directory
2) I set the variables to make the timer able to know what to check
3) My application needs to wait till the boolean variable gets set to true, so I put it in a
While:
vb.net
'Non existing files protection
While (Not bDirectoryExists)
If bDirectoryExists Then
Exit While 'In case it got created in the meanwhile
End If
If Not tmrFileCheck.Enabled Then
tmrFileCheck.Enabled = True
End If
End While
4) In my logic, the application should go out of the while now because the variable is set to true, and the code moves on, which never happens..
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Nov 15, 2011
How can I check to see if a certain node/element exists in a XDocument object?
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Mar 12, 2011
I want to do a web navigation program with autofill forms.(for semi-automatic directory submition). This is one example but because the directory's are diferent I need to check first if fields exists, and I dont know how?
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
WebBrowser1.Document.GetElementById("Title").InnerText = Form2.titlu.Text
End Sub
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Oct 26, 2010
I'm having trouble finding a reliable method to check if a directory (folder) exists on an FTP server. I want to create new directories and then upload files into them but thought it best to check if the directory already exists. Although attmepting to create a directory that already exists does not seem to cause any errors, it does waste a bit of time.
This code reliably checks if a FILE exists:
[code...]
I have attempted to modify this with ListDirectory in place of GetDateTimestamp (to check if a directory exists) but it seems no exception is thrown whether the directory exists or not. I've done lots of Googling but haven't found a satisfactory answer.
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Apr 22, 2012
This is troubling me as the FileExists command needs a full path.
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Aug 28, 2011
I currently have a bunch of text files I need to edit in a folder, I need to edit each file and remove the same line but not all files have this line, so I need to create a script that needs to check if the line exists then remove it.I have 1000s of files, that's why I need help to be able to create a script that does it for me instead of me editing each one manually.I am not sure on how to do this, but I am sure it is not difficult for people that have good experience with VB.net.
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Sep 17, 2011
I am currently attempting to create a VB.Net script that pulls up information on installed printers. I am using Visual Studio 2010 SP1, and as my target program needs to run on older machines, is currently built using .Net 3.5.Looking online, there are several methods on how to do this, one from url...the code is supposed to use System.Management as you can see. However, after importing System.Management, Visual Studio throws an error and states that ObjectQuery, ManagementObjectSearcher, and ManagementObject are not defined.a quick look at the MSDN forums shows that ObjectQuery is a class of .Net 4, 3.5, 3.0 and 2.I figured the error might be because I didn't have the .Net 3.5 SDK installed, so I installed the .Net 3.5 SP1 SDK to no avail.just to make clear, I am importing System.Management at the top "Imports System.Management"
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Nov 23, 2009
I'm running Windows 7 and am trying to Create a sub key in the registry.I used that code with no problems before but now it will not create this key [code].....
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May 25, 2012
I need to add a value to the registry for the runonce key but I keep getting this error:Argument not specified for parameter 'MainKey' of 'Public Function BungeRegValue(MainKey As Microsoft.Win32.RegistryKey, sKey As String, sKeyName As String, oNameValue As Object, RegType As Microsoft.Win32.RegistryValueKind) As Boolean'.Creating the Function is fine but I get the error when I try to add the function to a button click event
Public Function MyRegValue(ByVal MainKey As RegistryKey, ByVal sKey As String, ByVal sKeyName As String,
ByVal oNameValue As Object, ByVal RegType As RegistryValueKind) As Boolean
Try
[code].....
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Dec 21, 2009
How can i delete a value in the registry? I have tried with this code i found:
My.Computer.Registry.LocalMachine.OpenSubKey("HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun").DeleteValue("MyValue")
But it throws an Object not Set to an Instance Error.
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Jul 18, 2011
I am unable to get a value from the registry, every time i run my code it returns a value of 'NoAutoRebootWithLoggedOnUser', even though the value should be 1.
[Code]...
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Feb 8, 2011
I am trying to loop through a key to get all values. For some reason this returns nothing
Dim RegKey2 As RegistryKey = Registry.LocalMachine.OpenSubKey("SoftwareCompanyStartup")
Dim subname() = RegKey2.GetSubKeyNames
MsgBox(subname.Length)
[code].....
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Feb 19, 2010
im writing a program that edits Registry values using the
VB
Imports Microsoft.Win32
Imports System
Public Class Main
[Code]...
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Dec 5, 2011
I have access to VS 2010 through work and I'm having a bit of a play. I'm trying to create a small program to show the installed software from GP and have the ability to delete a selected registry key from a list. Am using a checked list box and 2 buttons. Also have 2 labels on the form but just using them as a visual check as to what the string says.
The program starts alright and gives the list of installed software from Group Policy. I'm having the problem deleting the ticked item. Here is the code I'm using. I think the problem is when it comes to the .deletesubkey line and what I have entered. I want it to delete the selected item rather than have the specific key name entered.
Imports Microsoft.Win32
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
[CODE]...
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Jul 27, 2011
I created an in house tool in VB.net to complete my post installation steps of SQL Servers.
My tool completes all post installation steps like (Creating Database,storedporcedures,logins,logon trigger, database mail configuration, Jobs , local security policies and creating required folders and granting permissions to service account.)
[code]...
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May 5, 2012
I am trying to change the permisions of the following registry key from within VB.net:-
HKEY_LOCAL_MACHINESOFTWAREMicrosoftMSLicensing
Basically need to change users to full control. I need to change permissions for the "users" group.
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Oct 5, 2010
When my program first launches, it generates a GUID which is then saved to the registry and compared to an online database when an internet connection is detected. If it is a valid registry key, another registry value is saved stating that it is valid. Is there a way to protect these 2 registry entries from being changed?
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Dec 28, 2011
Is there a way to be alerted to any changes made to the registry?
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Aug 22, 2011
i want to make a VB code that enters the Binary type data in a subkey with the name as NoEntries and data as some string like 02 00 00 00. I have written a code :
[Code]...
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Feb 16, 2012
I am wanting to limit my applications to be free for the first 15 uses. I am wondering about the best way to do this.Should I save the number of uses in the registry? Is this the best place? (Can't people just delete the registry setting and then have full use again?)
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Dec 10, 2011
Is it possible to hook registry changes and maybe even file system changes in VS 2010?
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