Can anyone please give me a example that provide the function as the following image?
I want to do the function which can show the X value and Y value when u click the point of the chart.
We refer to that feature as a crosshair, so when the user taps and holds it will pop that overlay up and follow their finger. To turn it on you just need to set the crosshairEnabled flag on the series. You may also be interested in the following tutorial which takes you through customizing the look of the crosshair labels that pop up: http://www.shinobicontrols.com/blog/posts/2012/07/19/customizing-that-crosshair/