Lock file for writing/deleting while allowing any process to read

Question

I am developing an application in C# (.NET), and am having trouble dealing with file locking.

• My main application (A) needs read/write access to a certain fil

Answer 1

though I have not used it, but named Mutex can save your day. Before opening a file in application A, create a mutext like this:

Mutex(bool initiallyOwned, string name, out bool createdNew)

pass file name as second parameter.

now when you open a file in application B, again use Mutex if out parameter createdNew is false then file is already opened by A so you can only read it.