Force file open

Question

One C ++ program fills a log file, it holds a log file descriptor. I want to open this log file with a C # program and analyze it to see if a specific line has been added to the log file.

However, if I open the log file using C #, I get "this file is being used by another process" IOException. Used code:

using(StreamReader reader = File.OpenRead(myFile))//IOException

A C ++ program opens a file with (I cannot change a C ++ program):

m_hFile = tsopen(m_csFilePath, 
_O_WRONLY|_O_APPEND|_O_TRUNC|_O_CREAT|_O_BINARY,
_SH_DENYWR,
_S_IREAD | _S_IWRITE); 

Opening a file with notepad works great, so you can open it. Can I make a C # program open a file in readonly mode?

Answer 1

, ReadWrite FileShare?

File.Open(myFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)

Answer 2

File.Copy .