I am creating a program that uses text files to recall data and store them in a variable. My intention is to make this text file hidden so it will be harder to find and for other people to edit the data inside. I'm looking for a code that enables me to write to the file without unhiding it.
View 5 Replies
i want to read/write to some files.Specifically my application searches text files but i also want it to search binary files. The problem is : how will i know when the file is binary and not text ? Also how will i get the hexademical contents of a binary file ?[URL]
View 2 RepliesI want to develop an application which can Write, Save, Read text files(or html files) What I want the application to do is. When I open my application I can write stuffs and then it will save it to my hosting/server. Then, the application will read the text which I already save.. So far, I can only make the application read it by using WebBrowser control and navigating it to a specified URL. Example: [URL](or message.txt) Which I modified from the website not from the application. I want to modify the text or html files from my application.
View 6 Repliesi'm using sharpdevelop to program WPF application(I'm newbie to WPF i've knowledge of VB only and no C#, is it necessary to learn C# to know WPF ?).
and i want to read CSV file first. after that i want to modify and save file. any suggestions and pointers for this ?
I have the following code for reading XML files.[code]...
View 8 Repliesreading and writing files. Let's say I have a text file with multiple lines that I want to be read into my visual basic program. The first line is displayed in textboxA while the rest of the lines are displayed in textboxB. How do I accomplish this? Am I able to use the peek method for textboxB but somehow tell it to skip the first line? Now textboxB is obviously a multiline textbox and I want the user to be able to type something into another textbox (textboxC), press a button, and it will be displayed in textboxA. How do I make the text in textboxC get displayed on the first line of textboxA and move all the other lines down the list?
View 2 Repliesin the following thread, [URL]..my first reply, writes and reads two files..
my question is, is that code used properly for writing/reading those 2 files?
for some odd reason, i feel like i am over using the writers/readers.is there a way to only use one writer/reader, not 2, as my code in that thread does, to write/read 2 or more files?
I have an application that works in both 32 and 64 bit, except that on the 64 bit system it can not open/ read/write any files.I know the 64bit file system is different, from what I heard. How can I make up for the changes? I have no access to a 64bit system, but I want to make my program able to find and open the files.
View 1 RepliesReading and writing *.amc files using vb.net 2005. how to read and write *.amc files in vb.net 2005.
View 3 RepliesI need to wqrite an app that can read through an Outlook PST file, and write messages to another PST file based on the content. I have never done any Office Automation, and was looking for pointers in getting started.
View 3 RepliesI have this code which works well:
Public Function LoadBinaryFile(strFilename As String) As Byte()
Using fsSource As FileStream = New FileStream(strFilename, FileMode.Open, FileAccess.Read)
' Read the source file into a byte array.
[code].....
How would I read/write settings to an INI file?
View 3 RepliesI use a code like this which perfectly works and creates MS Excel files so I can create Excel files and save my data into it.I also use a similar code to read the data, however, it only read and writes Excel 97-2003 files, and does not support Excel 2007 file format![code]...
View 2 RepliesI use a code like this which perfectly works and creates MS Excel files so I can create Excel files and save my data into it.I also use a similar code to read the data, however, it only read and writes Excel 97-2003 files, and does not support Excel 2007 file format!Do you have any suggestion on this?
Code:
Dim ExcelString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FileTextBox.Text + ";Extended Properties=Excel 8.0;"
[code].....
I am a new to visual basic 2010 and I am creating a small game program that will have players names and keep their scores in a text file. I placed the text file in debug folder for debugging purposes. The code below has been simplified for demonstrating purposes only.
[Code]....
Here is my code:
Public Function ReadBinaryFileLarge(strFilename As String) As Byte()
Dim position As Integer = 0
Dim bufferSize As Integer = 4096
[Code].....
Is this the correct way to go about this problem? If not, how should I attack it?
I have one project that I need help writing that I have spent months trying to write with no luck. Anyway so here is my question. I want to write a program that can display a phones filesystems that is connected to my computer by a serial port. I would like to be able to Read/Write files and stuff if possible. I have tried many ways of doing this so this is my last resort.
View 5 RepliesHow can I make txt files and read them in VB2008? The text file does not just consist of one single line. But probably more than a single line.
How do I read the txt file and put each line in one variable.
For example, the txt file:And read it, putting each name in an array variable.
This question only applies to files of line-terminated/text strings.[code]I suspect that ultimately, I will generate the myfiles version of the HD file as I write it to disk,but at this point in my VB.net 'skills', until I can prove what I've written by reading it back and having control of it in my program, I can't assume anything about the data/format/file that I have written.
View 12 RepliesAll i am trying to do is read and write files to a shared folder on a network in visual basic (VS 2010). I can go to the folder through windows without a problem and without being prompted for a password. However when i try to do it through visual basic, it cant find the directory. Here is my small snippet of code that i (hope) is telling me that the program cannot connect to the folder. [code] Are there any known issues with VS 2010 that may cause this? Maybe something else in my code that could have an effect? This is in my form_load event though, so it is literally one of the first things that runs.
View 1 RepliesIm trying to write a loop that will read through a number of *.csv files in a folder and then stuff the data into SQL. The code works and will happily put the data i want for a named file into SQL no problems. So when i had that working i then tried to loop it so that it would do the same for all files in the folder until all files had been done, and not error out if there where no files etc.
Maybe im tired (well, i am) or not had enough coffee but i just cant get this to work, it should be simple - i know it is infact, but its making ME feel simple.i think i should have an integer count in there, but similar examples ive seen dont use one. Also when trying to open the path i get an error at runtime "the path is not of a legal form"
code:
Public Sub ImportCUSTCSVs()
Dim dt As New DataTable()
Dim line As String = Nothing[code].
I'm starting to write some code to run an office (not professionally). When I write the Client Class, how do I make it that the number of the client be a primary key (unique and auto incremental)? Also, I want that all the Client and Products data be stored on a txt file.
View 19 RepliesI am using Visual Basic 2008 Express Edition. Some of the programs I am writing make extensive use of External files (saved games, data, item lists, etc.) I could use an easy way to get these files to ride allong during deployment (cd mostly). adding them to the resources works for some static pictures, but custom structures into lists of info to read and write from are beond that features abilities, same with the settings feature. I have found in other help referance to "MageUI.exe" so is downloading a .net SDK my solution or is there a better trick I can use?
View 2 RepliesI have recently decided to give .net another chance, but i have a few questions about it before i get really into it. RE: Files, I use random access files to store data as opposed to databases (namely i don't see the need for a database for storing so little information(records <200 max) knowing that it is an older system and less "cool" i don't care...) Will vs2010 express read, write to random access files? Would it be done kind of like vb6 (which is my current vb version)? I will be needing to print the text of rich text boxes, is vs2010 express capable of doing this?
View 7 RepliesI am reading an excel file. When everything passes the edits, it is then written to a database. However, if any cell in the row fails an edit, I would like to write a new worksheet (called Errors) containing all of the information from the row which failed.
View 2 RepliesI have an application that currently stores PDF files (and others) inside the database as BLOBs. The trouble with this method is that I've now got SQL Server databases in excess of 200 GB! I've finally figured out a way to still enable full-text search without needing to store the PDF files as BLOBs (yay! Adobe's iFilter isn't great.), but I'm having trouble designing the method for a client to get access to the files stored on the server's file system.
I want to place the files in a restricted directory on the server, so I can't simply pass a UNC path to the client and let them open the file from there either in a browser or using Process.Start(filename). I understand how that would work, but if that directory has user access granted, all sorts of security holes open up, right?So, what I'm thinking about is a way to have a SQL Server account that has read/write access to/from the protected file system directory. That way (in my mind), the SQL Server can take a file as it's loaded in through the import client (as a series of byte chunks) and write the file to that area of the filesystem. Then, when a file is requested, the SQL Server can bulk load the file into a varbinary(max) field and do whatever I want with it.
1. How can SQL Server take a stream of bytes and write them to a specified location on its local file system? (This is assuming that I want the import utility to be able to be run on a client machine and not require it to be run on the server itself.)
2. Is there any way to stream a varbinary(max) file to a web page out of SQL? I'm using a lot of PDF files that will have Fast Web View enabled, so if I can stream the bytes to a web page, the user will be able to see the first few pages of the document while the rest is loading. I thought about having the SQL Server read (bulk load) the file from the protected area and write it to an unprotected area just long enough to point a web browser to that location, then wiping the file, but that brings me back to #1 above and would THEN require me to be able to issue a delete command from SQL.
We are trying to communicate between our two applications, One is in VB.Net and the other one is in ruby. We can easily communicate between two .Net applications but how to communicate between a .Net and ruby application? [code] After creating the Memory Mapped File through the above code how can we read/write it in ruby?
View 1 Repliesread/write from VB.Net to ruby application and vice versa using Memory Mapped Files?
View 3 RepliesI am trying to read two text files and write in differents tabs.
Code:
Dim xl As Object
xl = CreateObject("Excel.Application")
xl.Visible = False
Dim i As Integer
[CODE]...
I have a VB.net 2005 app using the Microsoft.Office.Interop.Excel.dll version 11, deployed on a number of XP machines with Office 2003 installed. On one and only one machine I get the following error:Error -2147467261 Attempted to read or write protected memory. This is often an indication that other memory is corrupt.The line which triggers the error is:
xlSheet.SaveAs(strPathXLS)
xlSheet has been previously defined by
Dim xlSheet As Microsoft.Office.Interop.Excel.Worksheet
This should save an Excel file in a folder on the desktop. I can save a file from Excel in that folder, and create a new Excel file in it from the right-click option. The app is working correctly on the development machine and at least 8 other XP boxes on site.All Office and dotNet 2 updates have been applied.Office and dotNet have been uninstalled and reinstalled to no effect.
