Thanks for @davecrypto to recover my eth wallet. I had bought 10 btc of eth in the presale and then forget the password of my wallet. I have tried to recover it with my own python program but I failed. From Google I knew that Dave has an efficient solution and a good reputation. So I asked him for help and he made it just in one day. Thanks Dave !
For any details please visit his website below.
https://walletrecoveryservices.com/