/// <summary>
/// Initializes <see cref="dir_enumerator"/>.
/// </summary>
protected void CreateEnumeratorInternal()
{
var dir = this.fs_info as DirectoryInfo;
if (dir != null)
{
var enumerable = this.EnumerateFileSystemInfos();
if (dir.Root != dir)
{
// prepend ., ..
var dots = new FileSystemInfo[] { new DirectoryInfo(dir.FullName + "\\."), new DirectoryInfo(dir.FullName + "\\..") };
enumerable = dots.Concat(enumerable);
}
this.dir_enumerator = enumerable.GetEnumerator();
}
else
{
this.dir_enumerator = null;
}
}