c# - How do I programmatically change the security attributes of a file so that any user can delete the file

Question

I have a server written in C# that makes use of impersonation.

I would like to know how I can change the security attributes of a file so that any user can delete it.

My server impersonates a user and then creates a temporary file. Later on I need to delete the file but at that point, I am no longer impersonating the user that created the file and when an attempt is made to delete the file an exception is generated. My supposition is that at the time I create the file, I should be able to change the security attributes to allow any user to delete the file.

How may I accomplish this (C# preferred but p/invoke will work too).

I am currently using .NET 1.1, so a method that can be implemented in 1.1 would be appreciated.

Answer 1

It sounds like you want to use the System.IO.File.SetAccessControl method to add an ACL that gives the built-in "Everyone" group the ability to delete the file. The MSDN documentation has a decent sample of adding and removing ACL records on a file.