How does IsPostback technically work?

Question

I\'m currently having a strange issue whereby all browsers except from Google Chrome are registering a call to IsPostback within a Page_Load event as true when I click an as

Answer 1

Is Postback is implemented as such (using Reflector):

public bool get_IsPostBack()
{
    if (this._requestValueCollection == null)
    {
        return false;
    }
    if (this._isCrossPagePostBack)
    {
        return true;
    }
    if (this._pageFlags[8])
    {
        return false;
    }
    return (((this.Context.ServerExecuteDepth <= 0) || ((this.Context.Handler != null) && !(base.GetType() != this.Context.Handler.GetType()))) && !this._fPageLayoutChanged);
}

So unless you take into account all these parameters, it will not be possible to trace it.