c# - trouble about get value from selecteditems -

i want selecteditems values in listview` not work!

i have no problem when selecting 1 item want work in extended mode shows of selected items.

my code :

    list<fnamelist> familylist = new list<fnamelist>();     public class fnamelist     {          public fnamelist(string fname)         {             this.fname = fname;          }         private string fname = string.empty;         public string fname         {             { return fname; }             set { fname = value; }         }      }       private void button1_click(object sender, routedeventargs e)     {         messagebox.show(((fnamelist)listview1.selecteditems).fname.tostring());      }      private void window_loaded(object sender, routedeventargs e)     {         familylist.add(new fnamelist("mike"));         familylist.add(new fnamelist("john"));         familylist.add(new fnamelist("melon"));         familylist.add(new fnamelist("bab"));         listview1.itemssource = familylist;         listview1.items.refresh();     }   

xaml :

    <button content="show" height="23" horizontalalignment="left" margin="331,79,0,0" name="button1" verticalalignment="top" width="75" click="button1_click" />     <listview height="129" horizontalalignment="left" margin="20,23,0,0" name="listview1" verticalalignment="top" width="291">         <listview.view>             <gridview>                 <gridviewcolumn header="firstname" displaymemberbinding="{binding path=fname}"/>             </gridview>         </listview.view>     </listview> 

when clicked show button , gives error :

unable cast object of type 'system.windows.controls.selecteditemcollection' type 'fnamelist'.

whats problem ?

the code in button1_click event handler trying display fname of single item, listview1.selecteditems collection of items.

you can show first selected item:

messagebox.show(((fnamelist)listview1.selecteditems[0]).fname); 

or iterate selected items collection , whatever want inside, example, messagebox:

foreach (var item in listview1.selecteditems) {       string fname = ((fnamelist)item).fname;       messagebox.show(fname); } 

on side-note, can remove tostring() call. redundent since fname string.