I am creating a Simple Line chart by getting the data from database. In my query i am fetching three columns 1. Date 2. PageCount 3. Application And binding the chart with datatable. This draws the chart with PageCount on Y-Axis and Date on X-Axis which is good and required. Now i want to add the thid column to the tooltips to get the relevent Application Name for each point on map. Currently tooltip shows the PageCount with the number of visits fetched from database. Please help me someone. I know there are a lot of Good Guys.