Update Existing Folder With New Updated Files?

im having a problem with replacing some files in a folder, i have made a Auto Upater for a application im making (so beta testers can test it and also get updated stuff to test) now i can replace the Main application.exe with

If File.Exists(Application.StartupPath + "\test.exe") Then
File.Replace(Application.StartupPath + "\update\test.exe", Application.StartupPath + "\test.exe", Application.StartupPath + "\test.exe.old")
End If

This is after i have unziped the main update.zip folder it downloaded

but i also have a Data folder in the Main application folder and inside the new update\Data folder its has updated files now i cant list all files to replace like above as i want be replacing all files all the time, so im looking for something like you have on windows (would you like to replace files) without the prompt its just replaces them, so really im looking for a move and replace without prompting

i have tryed

Directory.Move(Application.StartupPath + "\update\Data", Application.StartupPath + "\Data")

and

Directory.Move(Application.StartupPath + "\update\Data\", Application.StartupPath + "\Data\")

but it errors saying the folder exists and i cant delete the folder as it will have files in that DONT need updating