I have a application which reads from ini at startup, What i want is a vb code that will block the user from opening the ini file manually, program could be running as service eg: C:config.ini. program should block the user from opening the file.
View 1 Replies
I have a method that allows a user to open a file. The InitialDirectory property is set at the beginning of the method. If the user selects a file in a different folder, the next time the dialog opens, it opens to the last folder used insted of InitialDirectory folder.
View 9 RepliesI would like to block the ability to open the same project twice.Like in VB6... you could not open the same vbp again.
View 2 RepliesI have a excel file place on server. I am using a application which written by VB.NET to open file in read only mode. User 1 open file in read only mode. How can user 2 detect that file is open or not status?
View 2 RepliesI want to create a small application in VB.Net which will zip the file such that when user will unzip this file, a url will be opened in user's default browser. Is there any way to create such files?
View 4 RepliesOpen a pdf file with user password in vb 2008
View 6 RepliesI'm trying to incorporate TransactionScope into my code and am failing at the first hurdle. I am unable to open a connection inside TransactionScope block. I get exception Connection Not Open.
Public Sub PerformDBWork()
Dim cnA As New OleDbConnection(My.Settings.DB_CONN_BUSINESS)
Try
cnA.Open()
[code].....
My cnA.Open() fires as expected but my call to cnBusinessDB.Open() fails.
I have the following code that generates a csv file on a button click. [Code] What I want to do is open a download dialog box that will allow the user to open or save that file it has just created.
View 2 RepliesI have a notify icon that uses balloons t notify the user of certain events. In some circumstances I would like to open a file or program when the user clicks on the balloon. The default behavior is to close when the user clicks the balloon. How can change this?
View 1 RepliesI have a WinForms application that I have taken over support for and it was build using Visual Studio 2005 with VB.Net. The application makes use of an Access database. It runs fine when it is installed as a standalone application, but the install cd for the application also allows for a network install and this is where I am currently encountering issues.
To test the network install I created a folder on my server (Windows Server 2003 SP2) and copied the Access database to this folder. I created a share for this folder and gave everyone full permissions to the share. Then on the workstation I installed the application and gave the path to the database as follows:
\myservermysharemydb.mdb
(The install steps here are as per the instructions given on the installation cd)The workstation that I installed it on is Windows 7 Ultimate. When I run the application, I get the error message given in the title when the application tries to read the database file. I have confirmed that I am able to write to the shared folder on the server, so I don't think this is a permissions issue. Also, the database file is not in use at all, so it is definitely not opened exclusively.
UPDATE:I have tested the workstation installation on a computer with a fresh install of Windows XP SP3 and it is able to access the database file without a problem. So it seems that this error that I am getting is somehow specific to Windows 7. Is there maybe a known issue with Oledb drivers on Windows 7? My version of Windows 7, btw is 32 bit.
This is a simple fragment of my code:
[Code]...
The last line throws an exception "Cannot open file" with certain end-user profiles. It works perfectly fine when executing from an Admin account. I just cannot figure out what user privileges and access settings may cause the error. Note that it also works with some end-user accounts (not admins). What missing user rights can cause this?
I have a project that will add the conents of a .txt file to a listbox but how would I make the program to open a browse for file dialog when a user click a button and then add the file to something to be read from like:
Dim accpath As String = My.Computer.FileSystem.ReadAllText(System.IO.Directory.GetCurrentDirectory() + "\somefile.txt")
The specific features I want to produce is it doesn't place on the form, it places in the little box at the bottom and when CustomUserControl.Show() is called it shows as a dialog boxI'm sorry if I misspelled something or my grammar is wrong, I've never done well in those subjects.
View 1 RepliesHow do I open a particular html page in a chm file when the user clicks on a menu item.
View 2 RepliesI've written a VB.NET program for a client that stores all of its data in XML files. I use the XMLReader to read the data into a dataset. When I run the sub to encrypt the XML file, I'll get the following message: Error: mscorlib: The requested operation cannot be performed on a file with a user-mapped section open.
It doesn't happen all the time, so I know it does work. But on occassion, I'll get this message. I've been all over the forums and I've tried everything I've read to try and stop this error.
I close the reader object and set it equal to Nothing. I've even tried using DoEvents to make sure the object finished closing before running the Encrypt sub. Nothing has helped.
I develop on a x32 PC. It works fine on the development machine. But then, when the client runs it on a x64 PC, he gets these errors. Could the x64 system really be running so fast that the .Close() and the = Nothing and evern the .DoEvents() can't keep up?
'i have written the following code:
Private
Sub Combo_Mth_KeyPress(ByVal
sender As
Object,
[code]....
'even thogh it seems to clear the text and select default text yet user written 'keyword appears in the text area of combobox?
What i want is :
There is one windows app ( made in .NET 3.5, VS2008, C# ) for Windows XP SP2 & SP3
generally users can change there IP or modify their IP Address.
Now,when my apps starts i dont want users to change there IP Address untill my app stops.
I am trying to block for the user who click save without choosing a picture image for the picturebox. Below is my current code.
Private Sub Button_Save_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button_Save.Click
''/*##########
'' Do something for empty image is provided. If it is null, then .
'' #########*/
[code]....
I want to open up an existing instance if my program is already running only if its running the same version.I noticed that this question was asked for only if the name exists, but what if the version is older, I just want to notify the user that an older version is still running, "please remove older version before starting this version."The other link is this one:Return to an already open application when a user tries to open a new instance but they don't talk about closing an instance if an older or newer version is detected.
View 3 RepliesI want to open up an existing instance if my program is already running only if its running the same version. I noticed that this question was asked for only the the name exists, but what if the version is older, I just want to notify the user that an older version is still running, please remove older version before starting this version. The other link is this one: Return to an already open application when a user tries to open a new instance but they don't talk about closing an instance if an older or newer version is detected.
View 1 RepliesI'm reading in a binary format. Strings are in a string block at the end of the file.
In the format, each record has an integer that is the offset in the string block where the string is located.
I could use the BinaryReader.BaseStream.Position property to advance to the location of the string and read it, and then set the position back, but that seems like that would be messy to me.
I am making a program that NEEDS to be password protected, so i made a textbox with a code so that when the user enters the right password it lets you in. But if the user/person enters a wrong password 2X it will kick you out. So is there a way to keep the
View 3 RepliesHere's the problem, going back to an earlier project - I have a block of 'settings' text in TextBox3, and need to search my XML document for that block - I then need to ADD a settings block from TextBox5 AFTER the found settings block, without having the format messed up - This is the 'block' I am trying to search for:
[Code]...
Is this even possible? I've tried a few different coding procedures, but I can only seem to search for a single string part [ One line ], and the <SettingEntry> tag is used for every line in the XML...
Is there any way to block the file download dialog from appearing?
Im using the web browser control
So you know what I am talking about:[URL]...
Is there any other way to download a file without the entire program freezing? whenever i call my.computer.network.downloadfile the VB stops furthering to the next code allowing my game to run choppily.
View 2 Repliesim using visual basic 2008 and a made a fully functional webbrowser useing the control. i have a huge list of ad servers and every different one is separated by an enter. i need a way for the program to read the file and block ads from loading.
View 1 RepliesSay I have some code that does this:
Public Function AppendToLogFile(ByVal s As String) As Boolean
Dim success As Boolean = True
Dim fs As IO.FileStream = Nothing
[Code].....
First of all: is it a problem that I have that Try/Catch/Finally block inside of a SyncLock?
Second of all: suppose this code runs, on an event, potentially many times within a small timeframe--say, ten times in one second. Is it OK to have it SyncLock like this, or would it make more sense to have it add a line to a Queue, and then write all the lines from the Queue to the file on a timer that goes off, say, every second?
Can I safely move ReferencePath information from a .vbproj.user (or .csproj.user) file into the corresponding project file? Note: All developers will be using developing from the same location on their machines.We'd like to allow users to maintain their own settings for other things, but have this basic info be setup once and checked into source control to be shared to all.
View 1 RepliesI have a block of HTML which I want to write to a file. It contains about 30 lines and it's difficult to escape all the double-quotes in individual WriteLine statements. In PERL, I can do something like the following to write inline HTML and print everything upto <<OUTFILE to outfile as-is, is that possible in VB .Net 2008?
print <OUTFILE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>GSC Signature</TITLE>
<META content="text/html; charset=windows-1252" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 9.00.7930.16406"></HEAD>
<BODY><<OUTFILE
I could save the HTML in a template file and copy it into a new file each time, but that's not very flexible.
Why would a .sln solution file open and appear empty in Microsoft Visual Basic 2010 Express - i.e. no windows showing projects and code files etc.When I inspect the file in a text editor, it contains references to vbproj files (which are present) which indicate that it should not appear as empty.No error messages are reported when the file is opened.
View 2 Replies
