Question

Any one could simply tell me what does base.OnPreInit(e) mean ?

Thank you

Answer 1

The OnPreInit method is called at the beginning of the page initialization stage.

When you are overriding this in your page, you’ll have something like

protected override void OnPreInit(EventArgs e)
{
   base.OnPreInit(e);
   ...
   // do something else 

}

where base.OnPreInit(e) calls the Page class’s OnPreInit().
If you don’t have extra functionality to add to your page then you don’t have to override OnPreInit