Question

I did:

if (averagesListTextFile != null)
{
   Directory.CreateDirectory(subDirectoryName);
   File.Create(subDirectoryName + "\\" + averagesListTextFile + ".txt");  

And then I want to do:

 reader = new StreamReader(subDirectoryName + "\\" + averagesListTextFile + ".txt");

But I’m getting error say the file is in use by another process…And that happen only after I did the File.Create

Answer 1

File.Create returns a stream, so you need to dispose it:

using (File.Create(subDirectoryName + "\\" + averagesListTextFile + ".txt"))
{
}

or equivalently in this case:

File.Create(subDirectoryName + "\\" + averagesListTextFile + ".txt").Dispose();

But if you’ve just created the file, why would you try to read it? It will be empty.

Note that your reader should use a using statement too. Alternatively, to read and write complete text files, you should look into File.WriteAllText and File.ReadAllText, which make life simpler.