Is it a bug for vs.net to show crystal report using web page?

I have a web project and I creat a page to view the report using crystalreportview, if I put my code inside the page_load, the page_load event don't happen. 
After I add 
protected void crvExploration_Init(object sender, EventArgs e) 
{
}
although the method inside is empty, the page_load event happened, any one has idea why this method cause page_load fired?
By the way, I am using vs.net 2008 professional version under window 2003 server.
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