This does not work because it will not write when the writers closed how do I keep it open? What do I have to change?
Dim tring As Integer
Dim startnumber1 As Integer
Dim bas As New System.IO.StreamWriter(SandboxLocation.Text & "internetconectivity.bat")
bas.InitializeLifetimeService()
[Code] .....
If tring is more than one it doesn't work, it cant write to a closed bat file.
why i get these followinf error in the following codes please
'Delet the file on the path, it does exist
Dim deletfile As System.IO.FileStream
deletfile = System.IO.File.Delete("C: emp.txt")
i get error underlining in blue the part
System.IO.File.Delete("C: emp.txt")
and the error is "express does not produce a value" second error i get is in this code
Dim datawriter As System.IO.StreamWriter("C: emp.txt")
where
("C: emp.txt")
is underlined in blue n the error says "array bounds cannot appear in type specifier"
Ok I know this question has been asked to death but I still have not seen a good answer. I have created an application in VS2010 using VB.NET. In my application I have an error log that is an XML file located in the Public gstLocalErrorLogLocation As String = Application.StartupPath & "ErrorLog"that gets written to in the event of an error so I can trouble shoot application easier. My application also downloads files from our FTP site and puts the files in Public gstLocalDownloadLocation As String = Application.StartupPath & "download"So I have files that get read and written to as well and created and deleted all in the Application.StartupPath which is either "c:Program Files(Application Directory)(Some Directory)(Some File)" or "c:Program Files (x86)(Application Directory)(Some Directory)(Some File)" depending on 32bit or 64bit Windows 7.
After creating the setup I install it on my test machine that have both Windows 7 32bit and 64bit.Everything in the application works great till I have to write to, delete or creat a file in those directories above. I know it is an access issue and the UAC. This will get installed on numerous systems so the options I have seen to change file or folder permission on the computers manually is not an option.What has to happen is after I install the application it just works like when you install it on XP. Some post have suggested that you us a user with administrator privilages or group which is all fine and dandy but the user I have used to test the application has all of that.
So what I am asking is how do you create an application with VS2010 in VB.NET that after creating a setup package and installing on Windows 7 will just work with out "Access to the path c:Program Files(Application Directory)(Some Directory)(Some File) is denied." If I have to install this on 100 Windows 7 computers it has to be a concreate no manually doing anything just install and work like when we installed on XP.
I want to drag files & Folders into my published VB EXE to list it How ?( info: i want it when my program is not running in the processes )Like when you drag text files into closed notepad.exe notepad.exe will open the dropped textI want like that exactly.And also in the shell windows explorer context menu. (open with...)
View 3 RepliesI'm using MS Visual Basic 2010 Express. The project requires me to refer to a class in another file, which is all well and fine, but it tells me that "Length" is not a member of the file class "Rectangle", when it plainly is. And it's only "Length" and "GetArea", not any of the other variables I refer to. I would've tried to look it up, if I even knew what I was looking for, but this problem has stumped me! I'll add the snippet of code that I'm trying to refer to the "Length" and "GetArea" with, as well as the parts of code that those two are in the "Rectangle" file.
'displays cost of sod
Dim floor As New Rectangle
Dim dblPriceSqYd As Double
[code]....
As you can see, it's obviously there. The code for the "Width" is exactly the same as the "Length" with a few name changes. My problem here is: I can't figure out why it's having trouble calling those two, when it calls the "Width" just fine. I've tried changing around the names, and nothing seems to work.
I know this idea of - if message boxes are used to display error messages inside a .dll and when the .dll is installed in a different computer (possibly a server machine), errors occurring inside that .dll will be shown in the server and not to the user. Since practically there will not be a person near the server to click 'OK' to the error message every time it occurs it will stuck the programs using the .dll.
So how to write exception handling to a .dll project?
I've taken a few vb courses a few years ago but I've been wanting to write a script that will search my harddrive(C:) for any ".dda" extention and list the location to a listbox. I eventually want the script to also copy the file to the location of the build but I can't seem to get the first part working at all. [code]A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll.
View 4 Repliesfor example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
In the game I'm making I have a background worker thread simulating the game and constantly outputting data to a file.I want to be able to access that file while simulation is going on. I understand that you can't access the same file simultaneously in two threads so I don't mind having the program (say on a button click) wait until the simulation isn't using the file.I can't seem to do that though! Whenever I either save or load the file I have a bolAccessingFiles variable which I check to make sure things don't happen simultaneously. I change the value to True just before opening any files and False just after closing any files.
This doesn't seem to work though. It seems as though the computer will still be using the file in some way even though the code has kept going. I need that when I next access the file I have a stronger way of checking if the file is already in use, and if so make it wait."The process cannot access the file 'C:UsersDavidDocumentsVisual Studio 2010ProjectsGameGameinx86Debugoutput.txt' because it is being used by another process."
When I publish the program. Is there any way to get VB to publish the text files with the program so that no errors can occur. When I install and run the published program I get a series of errors relating to text files that are not found.
View 4 RepliesI want to generate an xml file from the vb.net form application and i have the following vb code and the xml output file is shown below the code
Imports System.Xml Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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]
Basically I'm writing a program that records all the financial transactions I make. You type in what it is, whether it is going in or out, the date and the price. I will get on to adding the sums up later but that's important at the minute. With one record the program worked perfectly but as soon as I added an array to the records variable it stopped working and complained about a null value.
[Code]...
how to write and overwrite a excel files?write is like create a new excel files and insert data to it using vboverwrite is writing data to the excel file which overwrite the old
View 2 RepliesI'm working on a program where i need to create a text file and write in it. I created the file and I'm capable to write in it but my problem is that i'm not able to write text on the same line. Imagine you have 2 textboxes, the first is tb1 and the second is tb2. how can i write then content of the 2 textboxes on the same line in the text file?
View 4 Repliesseeing 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.
I am trying to create a bunch of records, there will be a limited number of "Codes", about 50. Each "Code" is associated with a name from a textbox, I was trying to have it save each one when you click a button, to a .txt file.So, from the start the record will be blank, the person will go through the form, choose a number from a numerical up and down box, pick a name associated with it (both of these are mandatory and not implied). When they click the button, it will save the contents I talked about into a .txt file, say the number is #2, and the name is "Bob", the next time they try to change that value for #2, it will overwrite "Bob".
View 6 RepliesI have been given the task of basically reading and writing to and from files. Below is the code from one sub:
If btnSaveRecipe.Enabled = True Then
FileName = "C:UsersLeylaDocumentsRecipe TaskRecipe.txt"
FileWriter = New IO.StreamWriter(FileName)
[code]....
I can't work out what i've done wrong, but when I open the file itself in the folder, it is empty.
Am writing a simple application which can write a to pdf,doc,xls and access files. so far it can write to word.i also want it to be able to navigate a hard disk and open these files using filters. i was using this code to write to the files
[Code]...
I am trying to search for snippet for reading and writing ini files in visual basic .net.
View 3 RepliesInput File to read:
SAMPLE NO: 10S-02013
Moisture 10.1
[Code]....
I am not getting the right output I need, as whenever it reads a line, it looses my sample numeber.
I'm writing a system with several programs, each of which will start off with a number of 'run time parameters' which will be stored in what I call 'personality files'. Each file will have about 10 elements ( file locations, logo files, dates, numbers , text strings ). I"m starting by building little programs which maintain ( build and modify ) the personality files. To begin the first one, I"m only reading/writing 3-4 strings ( I"ll graduate to dates and numbers later )When I run the program below, I get " The process cannot access the file 'c:yyyyyyyy.zzz' because it is being used by another process. ". I also get"A first chance exception of type 'System.IO.IOException' occurred in Microsoft.VisualBasic.dll "
I get these errors even though I've done the usual stuff like deleting other versions of the test file, cancelling other processes which might be involved, and so on.
Code:
'.... user has clicked on SAVE in menustrip ....
Private Sub FileSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FileSave.Click
[code]....
so i have it so that the user input three initials and presses an enter button. Then it goes into a listbox where theusers initials and game score enter. I then have it transfer to a text file. all this works but i need some code toun through the text file and arrange them from highest to lowestheres my current "HighScore" codei know its going to be a for loop but im a beginner in vb and it would be so much easier in java button1 is the enter buttonbutton2 is the save button that saves to a text file
Imports System.IO
Public Class HighScore
Dim objStreamWriter As StreamWriter
[code]......
I am having difficulty writing to cvs files. My application is a text parser that scans a txt file, removes punctuation, and then stores the individual words in another txt file for later analysis. My end aim is to process txt for semantic similarities. I'm very new to this so my code is very chunky But I'd really like to pull each sentence from txt file, put into an array, and then place each array item into a CSV file with commas between words. [Code]
View 2 Repliesi was wondering does any know of any good tutorial on using dat files eg reading writing and formatting. I am pretty sure you and use stream reader and writer form the IO but what about formatting.
View 14 RepliesMy app has a series of parameters that is to be stored in an external files. Eventhough the "parameter" file could be edited by the end user, I really don't care that much about what the user does to them.
So my two questions are, what is the most effeicent means of reading and writing a file and in what format should the file be in? When I say effeicent I mean, what utilizes the least amount of memory during the process, is fast, and disposable.
Example: XML, Text, something else. StreamReader / StreamWriter or what ever.
I am writing the source code to write the random files name but I don't know how to write that in vb.net Here it is the
[Code]...
I have a VB.NET project in Visual Studio 2008 that I created a specialized addin for. The addin prompts the user to select a database table, takes a template form class's files, copies them to another directory within the project, and renames the form class within the copied files. It then opens the new form and adds controls to it based on the fields in the database table.
The copying of the template form causes the background compiler to give 'duplicate member' errors, such as "Private Sub InitializeComponents(...) has multiple definitions with identical signatures," even though I renamed the files of the new form and the class name within them. Sometimes these errors go away before the new form is opened, but when they stick around the new form doesn't open correctly, and it throws an error instead. I implemented some code to wait until there are zero errors in the error list before trying to open the new form. This has helped sometimes, but for some reason sometimes the errors don't go away at all until the addin is closed.
How to copy the template form and rename the copy without the background compiler ever noticing duplicate members. If that's not possible, then perhaps someone has an alternative?
Here is my code that copies and renames the template form:
Private Sub CreateDataForm(ByVal tableName As String, ByVal displayName As String) ', ByVal subDataForms As IList(Of Object))
Try
Dim dataFormClassName As String = "frm" & MakeValidName(displayName)
Dim dataFormFileName As String = dataFormClassName & cVBSuffix
[CODE].......................
Where should I write the header file - Using System.Configuration and others? When I write it after the Inherit line in the form code (not the HTML one), it gives a redline under it. I want to start making a website.
View 1 RepliesI need to read the keys from several external applications .config files, is it possible to specify the file for AppSettingsReader?
View 1 Replies