you can locate this codes into a method and invoke it when you need it! in gvUserInfo_ItemCommand and in Page_Load !
another way is you call this event like this :
ListViewCommandEventArgs l = new ListViewCommandEventArgs(
new ListViewItem(ListViewItemType.InsertItem),
listview1,
new CommandEventArgs("command name",listview1));
gvUserInfo_ItemCommand(sender, l);