Question

I need to open a file to write some text to it, is there a built in way where the file is created if it doesn’t exist already?

I want to append to this file, and avoid locking it while it is open. But I will be writing to the file if there is an exeption in a loop like:

try
{

}
catch()
{
  write to file
}

Answer 1

You can use File.Open with a FileMode.OpenOrCreate, FileMode.Append.

using (FileStream fs = File.Open(path, FileMode.Append)) 
{
    // use fs
}

In either case, if the file has been opened with FileAccess.Write or FileAccess.ReadWrite, a new file will be created if one doesn’t exist.