Reading And Writing To 64 Bit Registry?
Sep 20, 2010
I need to read a value (and possibly adjust the value) in HKLMSoftwareMicrosoftWindowsCurrentVersionUninstall key on both 32 and 64 bit systems.I've tried accessing 'stuff' by compiling my widget as both a 32 and 64 bit app, but nothing is working. Then I came across some information indicating that this could be done from a 32 bit applicaiton using KEY_WOW64_64KEY [URL] somehow, but I can't figure it out.
1) Check the existing value of HKLMSoftwareMicrosoftWindowsCurrentVersionUninstall{ProductGUID}DisplayVersion handling both architectures.
2) If the value <> "" And <> Our Current Version Then
3) Write the Current Version to the value mentioned in step 1.
I wouldn't think this is that difficult as I've worked with registry before, but the 64 bit stuff is throwing me for a loop.It would be nice if I could compile my app to target AnyCPU then detect where its running on 32 or 64 bit. The app could then look and update in the appropriate location.I currently am set to use .NET 2.0, but could go to 4.0 if there is something in there that makes the above tasks easier.
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Jul 5, 2009
So I need to write out an object to a text file as well as read in objects from text files.How do I accomplish this? This is the code i've used to read and write just simple lines of text. Is there a small modification to this or just a different function i use to read in an entire object?
Code:
Dim path As String
path = "Security.txt"
[code].....
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Jul 17, 2010
I have just recently been using VB 2010 after using VB5. I have noticed a lot of changes. The problem I have is that I wish to open and save text files to and from arrays in the background. I've attached what I would do in VB5. I have searched around, but all the examples I find use a Textbox instead of an array. Can anyone show me how I can do this with VB 2010?
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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]...
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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.
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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).
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Jan 30, 2012
I have looked through more old threads than I can count and I just cannot get any of the suggestions to work. I did a little poking around MSDN as well. I am trying to use the registry to enable AutoLogon on a Win7 machine through code. I can read the current value with no problem but I am running into security problems when I attempt to change AutoLogon to "1". This is what I have done so far.
[Code]....
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Oct 10, 2008
I am having problems with opening a file and writing in a new line some data.Instead of writing the data in a new line,it replaces the data in the first line of the file with the new data.The function is this:
Code:
Private Sub cmdAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdAdd.Click
ListBox1.Items.Add(txtServerName.Text)
[Code]....
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Nov 17, 2009
My application needs to change the default signature of outlook and I need to change the value of a registry key for this. But I get a error that I probaly don't have enough permissions. Strange thing is, if I change it manually it doesn't complain.
Error:System.UnauthorizedAccessException : Cannot write to the registry key.
Happens at the 2nd line:
vb
Dim subkey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("SoftwareMicrosoftWindows NTCurrentVersionWindows Messaging SubsystemProfilesOutlook9375CFF0413111d3B88A00104B2A6676�0000002") subkey.SetValue("New Signature", Text.Encoding.Unicode.GetBytes("Eigen"), Microsoft.Win32.RegistryValueKind.Binary)
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Jun 13, 2009
"An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" when writing to registryI write to the registry quite often in my program (Around 10 times every 12 seconds) the error doesnt constantly pop up sometimes it can save 20times and on 21st ill get the above error. How can i fix this. Is it because im saving so often?
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Oct 8, 2010
I'm using the following code to open and then write a subkey in the registry
Private Sub RegSubKeyCreates(ByVal sKeyPath As String)
Dim RegKey As RegistryKey
Dim SubKeyParam() As String = Nothing
[code]....
When i'm trying to create the subkey i'm geting the error System.NullReferenceException Object reference not set to an instance of an object?
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Oct 21, 2010
My application uses structures that contain strings and arrays that I want to write to disk. I understand that I can create the fixed length data types in the structures by using "ReDim" and "String$", but my question is: Does VB reallocate the storage for the structure which includes these redimensioned members in-line (which would be necessary in order to write the contents to disk), or does it allocate heap and merely store a pointer in the structure?If only a pointer is provided, is there a straightforward workaround to allow me to create fixed length data types in a structure that could be written to a disk file?Or, Is there an I/O method that will handle the situation by recreating a contiguous buffer containing the structure before writing it to disk?
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Sep 15, 2010
with vb.net 2005 exp how to write this [code] values to registrythis data i am extracting from MySQL database.
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Sep 19, 2009
I'm running Windows Vista with admin privilege and UAC is disabled but still unable to write to windows registry!
My.Computer.Registry.SetValue _
("HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRun", _
"Test", "C:Test.exe", Microsoft.Win32.RegistryValueKind.String)
I'm getting error "Unauthorized Access Exception was unhandled."
"Access to the registry key 'HKEY_LOCAL_MACHINE....' is denied."
I've googled the net and found that registry permission elevation is required for admin tasks, Is there away to take registry key ownership through VB.Net code??
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Jul 6, 2009
I'm having a problem accessing HKLM\Software\Microsoft\Windows\CurrentVersion\Run on windows server 2008 from my vb.net 2005 app. I get "Can not write to .[...] access is denied" . It works fine on XP, server 2003 and vista.
Dim regKey As Microsoft.Win32.RegistryKeyregKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Run", True)
Dim checker As Object = regKey.GetValue("Adon") 'if key does not exist create it
[code]....
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Jul 25, 2009
I am basically reading a text file with info like this:
"S1($=""ChW System Pressure"",V=134.00,%=""Pa""),S2($=""UPS_Batt Rm 1to4 Circ A Flow "",V=9.17,%=""DegC""),S3($=""UPS_Battery Rm Sec ChW Rtn"",V=-38.38,%=""DegC""),S4($=""Buffer Vessel BV-02 High Temp"",V=9.08,%=""DegC""),...
And I'm trying to write a program that read the data, filters the sections so that per line it does the bit before the brackets i.e. "S1" then a comma then the sections inside the brackets as comma separated values removing the double quotes and symbols I don't want etc. Basically dividing the separate S*'s onto different lines and separating the values with comma's. There are also other points which are a different letter than "'S" and the same to do with them to.
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Mar 12, 2009
I want to write a generic file saving routine where the routine is passed data in the form of a collection and it sets a containsStructure flag. I wanted to be able to save the data from the collection, but if it is a collection of structures I want to be able to extract the data from the structure to write to the file.
The only trouble is, that I cannot do something like:
For Each s As dataStructure In data
Next
Since the compiler complains that dataStructure is not defined. Is there a way to code around this?
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Mar 12, 2011
I'm creating a simple forms application where users can enter their details and save the information to a .ini file because I needed this for a simple game profile. I've tried to make it write "Name =" + txtname.Text but it won't work anymore. And as well as that, I don't think It will load the text back from the ini file.
Here's the code I used;
Public Class Form1
Dim hFile As Long
Dim sFilename As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
Form designer: [URL]
Form1.resk: [URL]
Form1.vb: [URL]
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Jun 27, 2011
I have a tab spaced txt file that looks somthing like this;
[Code]...
I'd like to be able to read in the file and have a pop up message ask somthing like this; "Is cash1 for comp1 correct?" If yes ask about the 2nd line and if not ask what the real cash total is and then over write that to the file, then ask about the 2nd line.
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Dec 31, 2010
i am working on a Yahtzee projeect for college and am struggling with reading and writing to a csv file the code i have to read the file works but only gets the first column and displays it on a line not as a list.
Private Sub HighScoreFrm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
the other criteria i have to work towards and wondering if anyone can help is to limit the amount of records to 10 so need to check what the lowest score is and if the current score is higher over write it,
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Jan 15, 2009
i want my form to read a textfile and make it like line 1 will put in textbox1.text and line 2 will put it in like textbox2.text and like when the app closes it writes textbox1.text to line 1 and textbox2.text to line 2 in the .cfg file
i found acouple codes, but i havent found one that worked for what i wanted to do
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Jun 16, 2010
I have a table in a database with 3 columns: OfferName, ExperienceAward, and GoldAward
I populate a combobox with the various offer names with the code below:
Dim con As OleDbConnection = New OleDbConnection( _
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersDouglasDocumentsVisual Studio 2008ProjectsGameBoxRPGGameBoxRPGContacts.accdb;Persist Security Info=False")
Dim cmd As OleDbCommand = New _
[Code]....
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Apr 13, 2011
The code below has a green line below the text after Return. VB10 states that the context is obsolete but I cannot find a new method to get rid of it
Imports System.Configuration
Public Class Form1
Public Shared Function ReadSetting(key As String) As String
[code]......
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Jul 23, 2009
how to write and read from and to resource file, pressuming they are text files. I tried using the standard file streams but that does not work.
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Mar 22, 2010
Ive searched for the pass hour on how to do this. Everything ive found is for vb6 and it wont work with 08 for some reason. Here is what i am doing, and the way i want to do it.I have a login form that has a checkbox remember me. Inside the if statement (If chkRemember.Checked = true) I want the code to write the username and password in a config.ini file in this format;
[LoginInfo]
Callsign=dsfsdf
Password=dsfdsf
[GeneralInfo]
Can someone provide me with a code i can use for this? I also want to be able to read that data to.
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Aug 7, 2009
I have created a small game for my son and after each game it tells him his score.all I want is to write the highscore to a file and have it open each time he begins a game..so he can see what his last score was. I dabbled with all this Io.file stuff and I just can not seem to get it to write to the file..also how do I work with app path in this case? I mean when the game is done and installed the current path of the save text would change.
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Aug 24, 2009
Im trying to get my program to fill out textboxes with information it reads from a database, and then save the changes to the database. Does anybody know any good tutorials of this which i could look into?
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Dec 28, 2009
seeing as '.dat' files contain only what you want them to and there is no preset encryption for them etc could I write data to one by using this simple process:
1) Change file extension to '.txt'
2) Decrypt
3) Write
4) Encrypt
5) Change file extension to '.dat'
and pretty much the same for reading it. or am I thinking to simply?
I thought of the above way as i know how to write to text files already, but is this the best way to do it? or is there a better way?
EDIT: Nevermind you just write to it like a text file and encrypt/decrypt it. request lock/delete from mod.
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May 17, 2012
I'm having troubles reading the values from a registy key, basically I already have my code working which reads back data from a registry key with the name "data" however I also have another key called "data+" and when I attempt to read that the "+" get ignored and it reads back "data" which is in the same location. I have no power of changing the reg key, do I need to convert the + into hex or something like that, if so how do I that and then read it back?
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Mar 15, 2011
I thought this was simple so i guess i am doing something wrong. want to read the value of an item in the registry.the value im after is the centralprofile key which im trying to get by passing the SID and looking up the subkey but it never returns anything.
my code
Function getprofilepath(ByVal SID As String) As String
Try
[code].....
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