dont know how to phrase? google style currency converter? VB.NBET : ok i have a bit of a weird question here. have a program similar to a currency converter (it performs a mathematical function in order to produce a value to go in another textbox) what i want it to be able to do is identify the last textbox that you edited (there are 4) and then update the rest based on what you have inputted, the user then must be able to change a different textbox to change all of them.

if anyone can get me started on how to do it or even some sample code that would be much appreciated, thanks!

sorry if im not making sense, just have a look at the google currency converter and think that with two more editable boxes. 