about Refresh Method,i think use native refresh is better?

[Suyana]

android:
void OnRefreshRequested(object sender, EventArgs e){
if (Control == null) return;
//Control.LoadUrl("about:blank");
//SetSource();
Control.Reload(); //better?
}

if use SetSource,it can changed CanBack() result,but normal refresh ,i should not can back, i think.
(sorry,i'm not good at english....)