Refresh Problem?

[leazfe]

I have the follow problem: The first time i draw the image I get a blank screen( The image stay only a half second) but the next time the image is good drawn. I have looked for a refresh method but i didn

 

[philprice]

This happens as when the form is asked to redraw its self - it calls its OnPaint method (which i am assuming you have not handeled) - therefore it is cleared.

What you need to do is capture the Paint event of the control you are drawing the imagine onto - and draw your image onto e.Graphics (where e is the event object captured in the event - youll see). Everything Invalidate is called (you can do this manually via Control.Invalidate()) the Paint event is called where your code to plot the image should reside.

Hope this helps