Hide labels in pie charts (MS Chart for .Net)

Question

I can't seem to find the property that controls visibility of labels in pie charts. I need to turn the labels off as the information is available in the legend.

Anyone know what property I can use in code behind?

I tried setting the series labels to nothing Chart1.Series[i].Label = string.Empty; but the labels seem to show up anyway.

Solution 1

Chart1.Series[i]["PieLabelStyle"] = "Disabled";

works too, and doesn't need to be set for each datapoint.

Solution 2

Changing chart custom properties will do the trick as well and no coding is needed

<asp:Series Name="Series1" ChartType="Pie" CustomProperties="PieLabelStyle=Disabled">

Solution 3

Found the answer here: http://social.msdn.microsoft.com/Forums/en-US/MSWinWebChart/thread/32ccd993-5f43-47a3-bcbc-e772a13a87fe

It turns out there is an obscure DataPointCustomProperty called PieLabelStyle that governs label visibility in pie charts. Worse still, the property must be set on each data point.

for (var i = 0; i < chart.Series.Count; i++) 
    for (var j = 0; j < chart.Series[i].Points.Count; j++)
        chart.Series[i].Points[j]["PieLabelStyle"] = "Disabled";

Solution 4

This can also be done in the UI by

1. Opening the Series editor window (ellipsis button in the main properties panel)
2. Selecting the wanted series
3. Expanding the CustomProperties property
4. Choosing Disabled

Solution 5

...and Ben's answer in VB.NET format:

Chart1.Series(0)("PieLabelStyle") = "Disabled"

works fine for setting whole series

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Comments

[grenade]

Have you tested this with pie charts? It is valid for most chart types but back in February it did not affect pie charts. Has this changed?

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