windows forms exception and i dont know why

[fguihen]

im getting this error:

 

An unhandled exception of type 'System.InvalidOperationException' occurred in system.windows.forms.dll

 

Additional information: Collection was modified; enumeration operation may not execute.

 

i have no controls on the forum. i have overriden the onPaint method and the OnPaintBackground method. in my own paint method im drawing a simulation to the screen. i have bots, to which i pass a graphics object and draw them. each time they move, i invalidate the form and redraw. when they start moving too much, i get the error above. any ideas?

[PlausiblyDamp]

Any chance you could post the code in question?

Also are you looping over any arrays / collections in your code?

[Wile]

Without code (hint hint ;) ) I would guess that you are putting some information that you use in a foreach loop, while at the same time, an item is added/removed from this collection.

 

But we can't do much more than guess without some code, at least the lines where the exception occurs.

[fguihen]

im sorry for not checking back sooner. i found out what was wrong. i was calling a paint method from within a paint method ( i dont know why) but this was causing the exception. sorry for bothering you