God took ages to find my post .. Anyway I've made some progress and still stuck on other part. I have 3 different functions, one for graphic, second for graphic and third for axis. I solved the paint problem with Axis, since its static and never changes, so it was quite easy to convert to paint event. On the other hand, graphs have both 2 parameters that they receive and the graph changes after that according to the values given. Example : public void JoonistaGraafik(int k1, int k2) now when I want to make it to paint event "public void JoonistaGraafik(object sender,PaintEventArgs e, int k1, int k2)" I have problem calling out in InitializeComponents(); this.GraphPanel.Paint += new System.Windows.Forms.PaintEventHandler(JoonistaGraafik(slider_a, slider_b)); the thing is that, my two values "slider_a" and "slider_b" are generated in the trackbar_scroll event and then JoonistaGraafik(slider_a, slider_b); was called out. I'm pretty bad in explaining, but I hope that made a bit sence. In conclusion, the question is, how can I call out "this.GraphPanel.Paint += new System.Windows.Forms.PaintEventHandler(JoonistaGraafik(slider_a, slider_b));" if the slider_a and slider_b values have to change when I move the trackbar. Thanks, and sorry for not replying so fast.
