Abdallah Alsayed asked:…but how to use thread and cross-thread invocation?
You cannot call anything related to UI from non-UI thread. Instead, you need to use the method
(for both Forms or WPF) or
You will find detailed explanation of how it works and code samples in my past answers:
Control.Invoke() vs. Control.BeginInvoke()
Problem with Treeview Scanner And MD5
See also more references on threading:
How to get a keydown event to operate on a different thread in vb.net
Control events not firing after enable disable + multithreading
Basically, in your second, non-UI thread, you should work only with data representing graphics. The main, UI thread, should only render the same data. You need to synchronize this data between threads. To render data, override the method
of some control. It can be a custom control. To fight flicker effectively, use double buffering (please see control's options). When the data is modified in the second thread (call it "scenario thread"), simply invoke some delegate which calls
on the rendering control. It will push
Windows message, so your
handler will be called. With updated data. This way, your animation will be pushed onto the rendering system.
You can also call one of the
methods with parameters, to render just the part of the scene and improve performance on the parts of the scene where the data was not modified by the animation (you will need to specify a
for update. If you sequentially quickly invalidate several times with different subsets of the scene points, the involved regions will be merged before they reach the rendering.
This all gives you pretty good performance.
But even better performance can be achieved with WPF, because it is based on fast DirectX.
Please also see my past answers:
Drawing Lines between mdi child forms
capture the drawing on a panel
What kind of playful method is Paint? (DataGridViewImageCell.Paint(...))