Dispose static varible

Question

Hello all my firends
I have a web page that i use a static varible for count how many i click in my button.I want to destroy this static varible when i close my page .but it's not possible . I implement Dispose method in my page but this mtehod execute after page_load executed.
public override void Dispose()
{
base.Dispose();
}
plz help me.