c# - Can't navigation between xaml in frame? -

i have got issues . why did not navigate other xaml? wrong? so, trying make can navigated between 2 or more xaml in frame.

here link : https://github.com/englbach/mutiviewinrootpage

 <splitview.content>     <!-- onnavigatingtopage synchronize selected item in nav menu current page.          onnavigatedtopage move keyboard focus first item on page after it's loaded. -->     <frame x:name="appshellframe">        <frame.contenttransitions>            <transitioncollection>                <navigationthemetransition>                    <navigationthemetransition.defaultnavigationtransitioninfo>                       <entrancenavigationtransitioninfo />                    </navigationthemetransition.defaultnavigationtransitioninfo>                </navigationthemetransition>            </transitioncollection>        </frame.contenttransitions>    </frame> </splitview.content> 

public static appshell current = null;  public list<navmenuitem> navlist { get; } = new list<navmenuitem>(new[] {      new navmenuitem()      {           symbol = symbol.add,           label = "add feed",           destpage = typeof(rootpages),           arguments = typeof(addfeedview)      },      new navmenuitem()      {           symbol = symbol.edit,           label = "edit feeds",           destpage = typeof(rootpages),           arguments = typeof(editfeedview)      } }); public appshell() {      this.initializecomponent();      current = this; }  private void navmenulist_iteminvoked(object sender, listviewitem e) {      navmenulist.selectedindex = -1;      var item = (navmenuitem)((navmenulistview)sender).itemfromcontainer(e);      if(item!=null)      {           appframe.navigate(typeof(rootpages), item.arguments);      } } 

you followed official navigation menu (xaml) sample design layout.

there 2 tiny problems in demo.

1. each time items in navmenulist clicked, navmenulist_iteminvoked event in appshell.xaml.cs should triggered. , in event, navigated again , again rootpages, , pass navigation parameter(item.arguments) rootpages appframe.navigate(typeof(rootpages), item.arguments);, , argument destination.

you can modify code here this:

private void navmenulist_iteminvoked(object sender, listviewitem e) {     //navmenulist.selectedindex = -1;     var item = (navmenuitem)((navmenulistview)sender).itemfromcontainer(e);     if (item != null)     {         //appframe.navigate(typeof(rootpages), item.arguments);         if (item.destpage != null &&             item.destpage != this.appframe.currentsourcepagetype)         {             this.appframe.navigate(item.destpage, item.arguments);         }     } } 

2. then here comes second problem, said, arguments should navigation parameter, example, navigate addfeedview page , want send message "balalala", can code this: appframe.navigate(typeof(addfeedview), "balalala");. means, confused destpage , arguments.

you can modify navlist this:

public list<navmenuitem> navlist { get; } = new list<navmenuitem>(new[] {     new navmenuitem()     {         symbol = symbol.add,         label = "add feed",         destpage = typeof(addfeedview),         arguments = typeof(rootpages)     },     new navmenuitem()     {         symbol = symbol.edit,         label = "edit feeds",         destpage = typeof(editfeedview),         arguments = typeof(rootpages)     } }); 

in additional, if want appframe navigate rootpages @ first default, can code this:

public appshell() {     this.initializecomponent();     current = this;     appframe.navigate(typeof(rootpages)); }