How to make rtf, doc file readonly in c#.net

Question

2.00/5 (1 vote)

See more:

In our project we have to send data to other users in C#. But users should not modify the file. Only he may able to read the file. If user wants to send the file to anyone then he may send as it is the received file without modifying it.

Posted 16-Mar-12 4:37am

Member 8735239

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Marc A. Brown · Answer 1 · 2012-03-16T04:46:00

Solution 1

I don't think the kind of control you're talking about is possible, at least not with an RTF file. Here[^] is a way of making a Word document read-only, but it's easily circumvented.

Posted 16-Mar-12 4:46am

Marc A. Brown

Ganesan Senthilvel · Answer 2 · 2012-03-16T04:50:00

Solution 2

Two ways to achieve it:

C#

System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);
fileInfo.IsReadOnly = true/false;

IsReadOnly property on FileInfo essentially does the bit-flipping you would have to do manually in the second method.

C#

File.SetAttributes(filePath, FileAttributes.ReadOnly/FileAttributes.Normal);

Posted 16-Mar-12 4:50am

Ganesan Senthilvel

Comments

Marc A. Brown 16-Mar-12 11:58am

Yeah, I thought about throwing that bit in there as well, but as with my answer it's a fairly pointless exercise since it's so easily circumvented. Not sure why either of our answers got downvoted though since both are correct. I'll help compensate for the downvote on your answer. Have a 5. :)

Dave Kreskowiak 30-Sep-15 10:13am

The problem with this is that the file attributes are so easily defeated that it's not even worth the time to write the code. On top of that, the attributes can also be stripped completely depending on how the file is "sent" to the users.

Marc's answer below is actually far more accurate.