I created custom datalist. In it I have got three fields. customne custom:two custom:three
Now custom:three field is dependent on other two. It means when user fills out customne and custom:two fields, I want to calculate value and put into custom:three. I know I can do this by calling webscript. But for calculation I want to pass values of first two fields. On focus of custom:three field, I want to get value of first two fields. Does anyone have any idea, how to do this?