The best way to move a directory with all its contents(files or folders) in C#?

Question

What is the best way to move directory with all its contents(files or folders) in C#?

I used the following codes, but it throws The Directory is not empty

Answer 1

What about the following solution, it works well :

public static void DeleteDirectory(string targetDir)
{
    string[] files = Directory.GetFiles(targetDir, "*", SearchOption.AllDirectories);
    foreach (string file in files)
        File.Delete(file);
    new Microsoft.VisualBasic.Devices.Computer().FileSystem.DeleteDirectory(targetDir, DeleteDirectoryOption.DeleteAllContents);
}

public static void MoveDirectory(string source, string dest)
{
    new Microsoft.VisualBasic.Devices.Computer().FileSystem.CopyDirectory(source, dest, true);
    DeleteDirectory(source);
}