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Chart Control - real time data - scrolling

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Hi
Having problems with chart control with real time data adding two points and getting it to automatically scroll as data is added
Tried all the samples and spent hours googling but nothing I try works - closest I got was with sample in https://code.msdn.microsoft.com/Samples-Environments-for-b01e9c61/view/SamplePack but this didn't work for two points in line chart
So I have following code currently
All works and graph shows, but as more data is added it is slowly compressed and cannot be legible - so need to scroll automatically as data is added so always seeing new values but can move scroll bar back to see old
Please advise
Thanks
Dim graph_upload As New DataVisualization.Charting.Series Dim graph_download As New DataVisualization.Charting.Series Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load ' configure graph graph_upload.Name = "Upload" graph_upload.ChartType = DataVisualization.Charting.SeriesChartType.Line graph_upload.Color = Color.Red graph_upload.BorderWidth = 2 graph_upload.ToolTip = "#VAL{0.00}Kb" Chart1.Series.Add(graph_upload) graph_download.Name = "Download" graph_download.ChartType = DataVisualization.Charting.SeriesChartType.Line graph_download.Color = Color.Blue graph_download.BorderWidth = 2 graph_download.ToolTip = "#VAL{0.00}Kb" Chart1.Series.Add(graph_download) Chart1.ChartAreas("ChartArea1").AxisX.Title = "Time (seconds)" Chart1.ChartAreas("ChartArea1").AxisY.Title = "Kb/sec" End Sub And then I am adding points in a timer - the up/down values contain current upload/download speeds graph_upload.Points.Add(Up / 1024) graph_download.Points.Add(Down / 1024)
Darren Rose
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Please check the below post, I think it answers your question:
Real time data to chart control
Fouad Roumieh
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Each time you adding points try to reset the view and scroll to the max in xAxis, something like:
Chart1.ChartAreas(0).AxisX.ScaleView.Zoom(0, xmax)
Chart1.ChartAreas(0).AxisX.ScaleView.Position = xmax
Fouad Roumieh
- Edited by Fouad Roumieh Saturday, April 1, 2017 2:27 PM edited typo from C#
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Thanks, tried that but then it seems to scroll too quickly and I can't see data as it is further to the left off the current view
Never realised working with charts could be such a pain
Also tried getting it to recalculate y axis so scale correct to what is shown but that doesn't work unless I remove points as I add them - and then bottom axis doesn't increment like it does without
Think I will give up on this for now
Thanks for helping
Darren Rose