Creating a timer in the Global.asax file

I would like to execute the stored procedure for evey in one hour and load the dataset file into applicationicaion (dropdrown or some asp.net controle) by creating a timer in the Global.asax file .

Very new to this development, please, anyone can publish the code or provide the exact stream of what I need to do in the coding and how to load the asp.net controls (drop-down list or list control).

Thank you at Advance,