Page_Init vs OnInit

Question

Between handling the Page_Init event or overriding the OnInit method of a Page, which one is better to use? Thanks.

Answer 1

Basically there is no difference in this two appoaches. That's what is done in OnInit in Page class:

protected internal override void OnInit(EventArgs e)
{
    base.OnInit(e);
    if (this._theme != null)
    {
        this._theme.SetStyleSheet();
    }
    if (this._styleSheet != null)
    {
        this._styleSheet.SetStyleSheet();
    }
}

If we will open base.OnInit we will se that that is the place where Page_Init is fired:

protected internal virtual void OnInit(EventArgs e)
{
    if (this.HasEvents())
    {
        EventHandler handler = this._occasionalFields.Events[EventInit] as EventHandler;
        if (handler != null)
        {
            handler(this, e);
        }
    }
}

So basically there is no difference in these two approaches. However you need to call base.OnInit in your overriden method if you will choose to use override instead of event. And another difference is that if you are using override you can run some code just after Theme is applied.

Regards.

P.S. The only thing I recommend is to use the same approach all over the application.