want to change the System time zone on selection of time zone from drop down list

I want to change the System time Zone on changing the time Zone selected by user in my 开发者_开发知识库Application.

 DropDownList2.DataSource = TimeZoneInfo.GetSystemTimeZones();
 DropDownList2.DataBind();

How can I change it?

---

Have a look at this question. Hope this helps.