Last two articles (Part I, Part II) use two charts for drilldown the data. This part of article will helps in doing drilldown on single Chart only. There is no change in logic, only rearrangement of code lines and also a button introduced to plot master chart again back from .xml file after drilldown.
MVS used: 2008/2010
DB used: Northwind
Sample code attached for download, please comment about article.