Drill-down Sample Description This sample illustrates how the drill down functionality of the chart can be used. You need bind client-side click event to the chart. The javascript code: var chartClientId = "#<%=C1BarChart1.ClientID%>"; $(document).ready(function () { var drawBrands = function (e, data) { $(chartClientId).c1barchart("option", "click", drawVersions); $(chartClientId).c1barchart("option", "seriesList", seriesList); } var drawVersions = function (e, data) { var key = data.x, series = drillDwonData[key]; $(chartClientId).c1barchart("option", "click", drawBrands); $(chartClientId).c1barchart("option", "seriesList", [series]); } $(chartClientId).c1barchart("option", "click", drawVersions); }); Test the features Click on any column to see more details about the selected product. In detailed view click on any column again to return back. Note that percentage on 'y' axis changes according to chart values. Documentation