Home/ Questions/Q 996975
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-16T06:57:34+00:00

So I’m trying to update dataPoints programmaticaly in a column chart but whenever I

  • 0

So I’m trying to update dataPoints programmaticaly in a column chart but whenever I do this, the column chart displays empty columns where there IS a number greater than zero, and displays a zero otherwise. Now the code below works for a pie chart but for some reason it does not work for the bar chart. 

    barChart.Series(0).Points.Item(0).YValues.SetValue(countInstSubs, 0)
    barChart.Series(0).Points.Item(1).YValues.SetValue(countPCLRetSubs, 0)
    barChart.Series(0).Points.Item(2).YValues.SetValue(countSYNRetSubs, 0)
    barChart.Series(0).Points.Item(3).YValues.SetValue(countPRESListSubs, 0)
    barChart.Series(0).Points.Item(4).YValues.SetValue(countUSInstSubs, 0)
    barChart.Refresh()

When I use the designer to populate some static values, the chart displays those values. But once I try to update them, I get a blank chart. I have also tried clearing the series altogether and rebuilding it each time I want to change the graph but this did not work either.

Has anyone seen this before?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Turns out the problem was with the axis scaling. Once the values change, the axis doesn’t automatically recalculate (bug in my opinion) so you have to do it manually.

        barChart.Series(0).Points.Item(0).SetValueY(countInstSubs)
    barChart.Series(0).Points.Item(1).SetValueY(countPCLRetSubs)
    barChart.Series(0).Points.Item(2).SetValueY(countSYNRetSubs)
    barChart.Series(0).Points.Item(3).SetValueY(countPRESListSubs)
    barChart.Series(0).Points.Item(4).SetValueY(countUSInstSubs)
    barChart.ChartAreas(0).RecalculateAxesScale()
    barChart.Refresh()

    This fixes the problem.

    • 0