Clear ZedGraph Data

Question

I am using ZedGraph on a windows form to display bar chart. Following code executes when user click on a button.

zg1.GraphPane.AddBar("Series", null, y, Color.Red);

It adds an extra bar every time user click on button. I am looking for a way to reset or clear data already in chart.

How can i do that????

score 15 · Accepted Answer · answered Jun 15 '11 at 07:37

15

zg1.GraphPane.CurveList.Clear();
zg1.GraphPane.GraphObjList.Clear();

answered Jun 15 '11 at 07:37

Patrick

To redraw the graph you may also need to call `zg1.Invalidate()` – Patrick Jun 15 '11 at 07:49
Why are `CurveList` and `GraphObjList` both cleared? How would it work if I tried `zg1.GraphPane.Points = null;` or `zg1.GraphPane.Points = newPointPairList;` ? Understanding this would help me more than trial and error on my end. – Jul 13 '12 at 20:46

score 1 · Answer 2 · answered Feb 24 '13 at 03:16

1

don't forget to give zg1.Refresh() if never see the result if you don't refresh.

answered Feb 24 '13 at 03:16

santo

1

This does not answer the question. A comment at best, but something I think the OP is already aware of anyway – musefan Jul 17 '13 at 11:32

score 0 · Answer 3 · answered Sep 20 '13 at 15:31

0

No Need to clear anything, the think you need to put at the end of the code after generating the graph is zg1.Refresh()

answered Sep 20 '13 at 15:31

Dennis Henry

3 Answers3