Hi, do we have pixels that we can set in order to plot an x-y graph
on a form ?

Hi elemis

You need to have a look at the OnPaint method - here's an example in VB.NET
that draws a diagonal line.

Protected Overrides Sub OnPaint(ByVal e As
System.Windows.Forms.PaintEventArgs)
e.Graphics.DrawLine(Pens.Black, 100, 100, 200, 200)
End Sub

But you would probably be better off buying a graphing control, or
developing your own rather than putting all your graphing code into the Form
Paint...

HTH

Nigel Armstrong

"elemis" wrote:

> Hi, do we have pixels that we can set in order to plot an x-y graph
> on a form ?
>

And to follow up my own post, make sure you call MyBase.OnPaint(e) before
your own painting code.

Nigel Armstrong

"Nigel Armstrong" wrote:

> Hi elemis
>
> You need to have a look at the OnPaint method - here's an example in VB.NET
> that draws a diagonal line.
>
> Protected Overrides Sub OnPaint(ByVal e As
> System.Windows.Forms.PaintEventArgs)
> e.Graphics.DrawLine(Pens.Black, 100, 100, 200, 200)
> End Sub
>
> But you would probably be better off buying a graphing control, or
> developing your own rather than putting all your graphing code into the Form
> Paint...
>
> HTH
>
> Nigel Armstrong
>
> "elemis" wrote:
>
> > Hi, do we have pixels that we can set in order to plot an x-y graph
> > on a form ?
> >

This is great, any ideas how a generate a paint event to refresh what
I am drawing?

Try the Invalidate() method.

HTH

Nigel Armstrong

"elemis" wrote:

> This is great, any ideas how a generate a paint event to refresh what
> I am drawing?
>

Take a look at XYGraph from http://www.componentXtra.com. The basic version is free.

---
Bob
componentXtra