Thanks for the reply.
i am using Version7.2.3.0. the Following things i did
1. i added two chart control in my web page in the design time.
2. At runtime i am giving the argument and value of the serries of chart control.
3. what is happening that one general Page_Load event fired than again two times Page_load event.
4. In my web page , in post back it fires Page_load noraml one with post back then again two times page_load without post back. In that scenario , i am not able to wrtie the code in the not post back scenario as it always fires
please let me know in this regard
Vishwa