Graphics Object Dispose method

[PhilH]

I have the following code in the paint event of a picturebox. Would someone please explain why the g.Dispose line raises an exception?

 

Dim g As Graphics = e.Graphics

g.DrawRectangle(Pens.Blue, New Rectangle(0, 0, 10, 10))

g.Dispose()

[Nerseus]

In the Paint event, you're given the Graphics object. In that case, you shouldn't Dispose of it since there might be other event handlers that are counting on it.

 

Only call Dispose on a Graphics object if you create one (outside of the Paint event usually).

 

I'm not sure why it throws an exception, but don't do it and it will go away :)

 

-nerseus

[PhilH]

Thanks for your help.