Question

// (1) create test file and delete it again
File.Create(Path.Combine(folder, "testfile.empty"));
File.Delete(Path.Combine(folder, "testfile.empty"));

The last line throws an exception:

The process cannot access the file
‘\\MYPC\C$_AS\RSC\testfile.empty’
because it is being used by another
process.

Why is that?

Answer 1

File.Create hands you back a stream, that you haven’t closed.

using(var file = File.Create(path)) {
   // do something with it
}
File.Delete(path);

should work; or easier:

File.WriteAllBytes(path, new byte[0]);
File.Delete(path);

or even just:

using(File.Create(path)) {}
File.Delete(path);