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Building Charts with multiple y-Axes

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I'm having a lot of trouble with working with multiple YAxes when building a

charts with one to many series that are dynamically selected. In my

scenario, the series (or 'measures' using this project's business

terminology) can belong to one of 3 datatypes which are:

a) Numeric (double)

:) Percentage (1 -100)

c) Money

The user can selects series with different datatypes can be mixed and

matched in the same chart. Hence the chart wil lrequire a Yaxis for data

type selected. So there can be a chart which has, for example:

2 series of Numeric type data - displays the Numeric Y-Axis

1 Series of Percentage type data - displays the Percentage Y-Axis

2 Series of Money type data - displays the Percentage Y Axis

These series have different scales and so the need to use multiple Y-Axes.

My problem has been writing the code for this scenario. I am supplying what

I have done so far for creating a chart with multiple Y-Axes, but this often

causes the chart to fail (big red cross with HtmlTag='Auto'). My main

problem is finding how to assign the chart with Main/Secondary axes. Because

they are dynamically created, I cannot assign the datatypes with specific

axes numbers because there might not be a series of that type. Hence, this

code might assign a chart with no Main axis or too many. If I assign the a

series axis as the Main, it often fails, but I have no idea why.

The single sample code example in the documentation is a hard-coded one and

not very self-explanatory.

Can you tell me what I'm doing wrong here:

int numericAxisIndex, percentAxisIndex, moneyAxisIndex;

numericAxisIndex = 1;

percentAxisIndex = 2;

moneyAxisIndex = 0;

foreach(MeasureItem mi in ci.Measures)


series = chart1.Series[m];

//Get the series type and deal with assigning the y-Axis




case MeasureDataType.Numeric:

//Numeric Axis

axis = chart1.Axis[numericAxisIndex];

axis.Visible = true;

axis.Grid.Color = System.Drawing.Color.Blue;

axis.TextColor = System.Drawing.Color.Blue;

series.YAxis =




case MeasureDataType.Percentage:

//Percentage Axis

axis = chart1.Axis[percentAxisIndex];

axis.Visible = true;

axis.Max = 100.00;

axis.Min = 0.00;

axis.Grid.Color = System.Drawing.Color.Red;

axis.TextColor = System.Drawing.Color.Red;

series.YAxis =




case MeasureDataType.Money:

//Money Axis

axis = chart1.Axis[moneyAxisIndex];

axis.Visible = true;

axis.Grid.Color =


axis.TextColor = System.Drawing.Color.Green;

series.YAxis =






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