How can I clear the content of a file?

Question

I need to clear the contents of a particular file every time the applications starts. How do I do it?

Answer 1

This is what I did to clear the contents of the file without creating a new file as I didn't want the file to display new time of creation even when the application just updated its contents.

FileStream fileStream = File.Open(, FileMode.Open);

/* 
 * Set the length of filestream to 0 and flush it to the physical file.
 *
 * Flushing the stream is important because this ensures that
 * the changes to the stream trickle down to the physical file.
 * 
 */
fileStream.SetLength(0);
fileStream.Close(); // This flushes the content, too.