// tries to create a sub-directory
// if successful, the sub-directory is deleted
// creates the directory if needed - does not delete it
private bool TryCreateSubDirectory(string dir)
{
try
{
var path = Path.Combine(dir, _ioHelper.CreateRandomFileName());
Directory.CreateDirectory(path);
Directory.Delete(path);
return(true);
}
catch
{
return(false);
}
}