Update a Draw

[Luis Arnauth]

Hello,

I've got a small aplication where i design a small scheme using
System.Drawing.

I need to use a NumericUpDown control to change some text i've draw.

I have all the code under:
protected override void OnPaint(PaintEventArgs paintEvent)

How can i update my draws with new values ?

Thank you

Luis Arnauth

 

[Tim Wilson]

Are you drawing directly on the form or is the drawing being done in a
custom control? If it's the form, then when the value of the NumericUpDown
control changes call the Invalidate method on the form, to request a
repaint, and ensure that you're using the value from the NumericUpDown
control in the OnPaint method.

 

[Luis Arnauth]

I'm drawing directly on the form using

protected override void OnPaint(PaintEventArgs paintEvent)

inside there are some circles and text.
I need to know how to refresh the text portion after the user change some
values.

is the method correct for doing this ?

Luis Arnauth

 

[Tim Wilson]

Yes. Just call the Invalidate method on the form when the value has changed
and it will cause the OnPaint method to be called. In the OnPaint method
draw the text.