Water went in to trackpad

Hi! So yesterday I accidentaly split a little bit of water on the top right corner of my trackpad. I cleaned it with a towel right after but after a few seconds the cursor moved by himself. It opened the documents, programs, clicked everywhere (right and left), also deleted what I was typing and of course, I cannot control my cursor from the trackpad anymore. A friend recommanded me to dry it with a hairdrayer, what I did for a few minutes. But the problem didn't solve. I turned it off right after. Next day I turned it on to check if the problem was solved, but it didn't (I turned it off just after checking it). Do I have to change my trackpad or is it possible to repair it?