Hi Surya,
My apologies for the delay in responding to you.
You can load and save the Chart with its custom settings by using the template.Load() and template.Save() methods.The Chart should be saved in xml format.
But using these methods only certain settings of the chart can be saved and loaded back.Some of the properties that get saved are SeriesType,LegendPosition etc.
I have attached a xml file which shows the properties supported while saving and loading back the chart.
Also kindly take a look at the attached sample and let me know whether this helps you.
Thanks & Regards,
Ramya.
LoadAndSaveTemplate.zip