Hiding Zero Values in Pie Chart

2 posts, 0 answers
  1. Saravanan Thiruchabai
    Saravanan Thiruchabai avatar
    11 posts
    Member since:
    Mar 2010

    Posted 25 Apr 2010 Link to this post

    Hi

    How to hide the zero values in a Pie Chart?

    Thanks
    Saran
  2. Nikolay
    Admin
    Nikolay avatar
    397 posts

    Posted 28 Apr 2010 Link to this post

    Hello Saravanan Thiruchabai,

    Thank you for your interest in our controls.

    In order to hide the labels of items with zero values, you can simply remove the DataPoints in the following manner :
    RadChart1.ItemDataBound += new EventHandler<ChartItemDataBoundEventArgs>(RadChart1_ItemDataBound);
    void RadChart1_ItemDataBound(object sender, ChartItemDataBoundEventArgs e)
           {
               if (e.DataPoint.YValue == 0)
                   e.DataPoint.DataSeries.Remove(e.DataPoint);
           }

    Alternatively, you may refer to the MeteoChart example, which uses a LabelVisibilityConverter class. Perhaps reviewing it would be helpful for you. Simply navigate to the Meteo Chart demo and press the View Code button to find the LabelVisibilityConverter.cs file.

    Regards,
    Nikolay
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