done: almost the same.

So, I create another new project : one form with Infragistics chart component, and another form with SoftwareFX chart component.
It's almost the same code, see the difference by yourself: it's very enormous !
In order to increase the difference, I used approxymately 11000 points ! (2 samples curves are join in the project)

 But, how could I sent this project to you ? (1053 Kb)

Regards,
Loïc

I just tried the WPF sample above with 1500 points (Scatter Line Chart) and it takes less than a second to resize the window. There must be something else which slows down your application. Could you create a new test app and just test the code above. It should be much faster than 5 to 6 seconds to redraw the chart.

Thanks,
GoranS

thank you to have answered.

Unfortunately, that improves only one part of the problem: in my mind, the biggest concern comes from the slowness of resizing: when I resize the windows form (with real time aquisition ended, and so, no more point appended), it takes 5 to 6 secondes to redraw the chart.

I want to add a dock manager to my form: the chart will be docked into a panel, and a datagridview will be docked into anther one.
Our customers resize the docked components frequently (regarding they makes analyses, or search for particular results).
It is impossible to say to them "don't worry, you have only to wait for 5seconds, the chart will be redrawned..."

I do not understand why it is so slow, especially for a simple resizing without data points modification !

 May be another idea ?

regards,

Loïc