I am using MS V S 2008. I am working with files. Something likes this

FileStream^ fs =

new FileStream( "_1Name.txt",FileMode::OpenOrCreate);

new StreamWriter(fs); // Create a StreamWriter

sw->Write(strng);

sw->Flush();

sw->Close();

Now I noticed that the files Iam working with such as "_1Name.txt",can beaccessed and modified by anyone who can go to"My computer". How can I hidethose filesor makethem visible but inaccessible(May be giving them extensions not "*.txt" )?

Your application needs to read/write a txt file, andyou want to prevent others from accessing/modifying the file, am i right?
If so, some ideas for you:
1. Put the file in your application folder if possible to tell others that "don't modify or move the file, it is a part of the application.".
2. Encrypt the file when write operation is done, decrypt itbefore read operation,following aresome helpful links about Encrypt/Decrypt file:
http://www.codeproject.com/KB/security/fileencryptdecrypt.aspx;
http://www.codeproject.com/KB/security/DotNetCrypto.aspx;
http://support.microsoft.com/kb/307010;
3. There are some smart softwares have the abliity to hide file/folder, but those kits mayalso make the file inaccessible to your application.

Thanks,
Eric

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Please remember to mark helpful replies as answers and unmark them if they provide no help.

To prevent anyone from reading the file, make sure you press Windows + L whenever you leave your desk.

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Hans Passant.

Your application needs to read/write a txt file, andyou want to prevent others from accessing/modifying the file, am i right?
If so, some ideas for you:
1. Put the file in your application folder if possible to tell others that "don't modify or move the file, it is a part of the application.".
2. Encrypt the file when write operation is done, decrypt itbefore read operation,following aresome helpful links about Encrypt/Decrypt file:
http://www.codeproject.com/KB/security/fileencryptdecrypt.aspx;
http://www.codeproject.com/KB/security/DotNetCrypto.aspx;
http://support.microsoft.com/kb/307010;
3. There are some smart softwares have the abliity to hide file/folder, but those kits mayalso make the file inaccessible to your application.

Thanks,
Eric

---

Please remember to mark helpful replies as answers and unmark them if they provide no help.

Try writing a small app that open your files exclusively. This program would always be running. You can also make this program password protected.

when ever you want to access your files, close your program so that it would release the file handles.

These are not effective security measures. Anybody that can get to your work station can kill a program or run a debugger to bypass the protection. Press Windows + L for real protection.

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Hans Passant.

Try writing a small app that open your files exclusively. This program would always be running. You can also make this program password protected.

when ever you want to access your files, close your program so that it would release the file handles.

I would like to explain that the files are going to be inside the folder. If you open the folders of any program say windows xp. You may find a lot of files of different extensions. If you try to open any of them you cannot, but if there is a file end with .txt; I think anybody can open such as Ream me files. Imagine if I do not want anybody to open that Read me file.

Eric,
I think you understood me very well. Thanks I will review those sites. To make it clearer. Imagine that I donot want anybody to read the Read me files.

Hans,
It is off the wall, but still can use it!

The instruction

File.SetAttributes(@"c:\yourfile.xyz", FileAttributes.Hidden)

hidden the file.

Iapprciate it. Do you think it will work with MS VS C++ 2008?