c# - Save edited listbox items -

in wpf app, wrote code editing contents of listbox items. edit process working fine. after editing want save changes in listbox itself. how that?

my listbox consist of horizontal stackpanel of 6 textboxes.

as used templates in app, code is,

private void editbutton_click(object sender, routedeventargs e)     {         datatemplate tmpl= (datatemplate)this.findresource("defaultdatatemplate");         if (listbox1.itemtemplate == tmpl)         {             tmpl = (datatemplate)this.findresource("editabledatatemplate");             listbox1.itemtemplate = tmpl;             this.editbutton.content = "done editing";         }         else         {             tmpl = (datatemplate)this.findresource("defaultdatatemplate");             listbox1.itemtemplate = tmpl;             this.editbutton.content = "edit";         }          // want add here save contents.     }