Bitcoin qt blockchain rebuilding

[mlk]

Good evening community,
Some years ago I bought 200€ of bitcoin.
I spent 100 euro in two different transaction.
After this I forget my bitcoin and my wallet.
Some days ago I try to rebuild my bitcoin qt wallet,
Installing new 1.5 version, specifying olds database folder and executing the app from batch:
BitCoin-qt.exe -datadir=d:\BitCoinData

Now, after many days of processing, bircoinqt rebuild block chain, but my wallet is empty....
And there is no trace of my old transaction...

Where I wrong?
Maybe I have used a incorrect database folder?
Thanks for your suggestion and really sorry for my English.

[Aura]

If you are online and the blockchain is fully synchronized, your BTC balance and previous transactions should be visible.
Are you sure you used the right wallet.dat? Or do you have a paper/digital backup of your privatekey/passphrase?

[LoyceV]

After this I forget my bitcoin and my wallet.

Did you try to start your old wallet before upgrading? If so, what did it show?

Installing new 1.5 version, specifying olds database folder and executing the app from batch:
BitCoin-qt.exe -datadir=d:\BitCoinData

The latest version of Bitcoin Core is version 0.15.1. If you have version 1.5, what exactly did you download?

Now, after many days of processing, bircoinqt rebuild block chain, but my wallet is empty....
And there is no trace of my old transaction...

Are you sure it used your old wallet.dat file? Or could it be it created a new wallet?

Just to be sure: did you make a backup of your wallet (wallet.dat) before upgrading?