This is how I understand it.
When the -dikçe suffix is attached to a verb stem it indicates a certain continutity or repetitiveness to that verb. In English, that can be expressed by many words such as, for example: as, each time, every time, whenever, the more, as long as, so long as, etc.
Here´s some examples to maybe clarify it a bit:
Arkadaşını gördükçe yüzü güler.
Whenever you see your friend, he´s happy.
Onu gördükçe ağlar.
Whenever he sees it, he weeps.
Çocuk, büyüdükçe güzelleşiyor.
As the child is growing, s/he is getting more beautiful/handsome.
Yaşlandıkça hayatı daha bir ciddiye aliyor.
As he gets older, he takes like more seriously.
Gönül taze kaldıkça insan ihtiyarlamaz.
A person doesn´t grow old as long as his/her heart stays young.
So this can be translated in many ways, not only as "the more" - the idea is that something happens continuously or is repetitious.
I think It would be a great suffix to use in marital spats 
(The more I look at you, the more I wish I married your brother!, Whenever I tell you to do something, you pretend not to listen! You get the idea 
Now, when you use -dikçe on a negative verb stem, it expresses the idea of "unless", for example:
Özür dilmedikçe bizi affetmeyecekmiş.
They say he will not forgive us unless we apologize.
Bir işi sevmedikçe başarılı olamazsin.
Unless you love your work, you cannot be successful.
