asp.net move directory files to another folder code

ASP tutorial. NET move directory files to another folder code
The following three instances are asp.net tutorial file move code that can move all files in one directory to another folder or directory.
*/
Method one traversal folder, File.move

foreach (String file in System.io.directory.getfiles ("", "*.txt", System.io.searchoption.alldirectories))
{
FileInfo fi = new FileInfo (file);
}

Method Two

New DirectoryInfo (@ "C:a"). GetFiles ("*.txt"). ToList (). foreach (Fi => fi.moveto (@ "c:b" "+ Fi.name"));

Method Three

public void Foo ()
{
New DirectoryInfo (@ "C:1"). GetFiles ("*.txt"). ToList (). foreach (Fi => fi.moveto (@ "C:2" + fi.name));
}