c# - WPF - Binding to ListView cannot work -


code behind, try bind listview obserablecollection packageinfos. however, when run it, shows no information. can slove it? 

    public partial class mainwindow : window     {         public mainwindow()         {                        initializecomponent();              packageinfos = new observablecollection<packageinfo>();              polulatepackageinfos();              datacontext = this;         }                  public observablecollection<packageinfo> packageinfos { get; private set; }          private void polulatepackageinfos()         {             packageinfos.add(new packageinfo() { name = "apple", pricerate = "10", imageurl = "images/greatwallofchina.jpg" });             packageinfos.add(new packageinfo() { name = "beijing", pricerate = "6", imageurl = "images/greatwallofchina.jpg" });             packageinfos.add(new packageinfo() { name = "china", pricerate = "4", imageurl = "images/greatwallofchina.jpg" });         }     }

xaml section

<window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"         mc:ignorable="d"         title="mainwindow"          height="585"          width="320"                         x:class="vendingmachine.mainwindow         xmlns:local="clr-namespace:vendingmachine">      <grid style="{staticresource gridstyler}">          <grid.rowdefinitions>             <rowdefinition height="3*"/>             <rowdefinition height="3*"/>             <rowdefinition height="3*"/>             <rowdefinition height="1*"/>         </grid.rowdefinitions>          <scrollviewer scrollviewer.horizontalscrollbarvisibility="hidden"                                              scrollviewer.verticalscrollbarvisibility="hidden"                        panningmode="both"                       grid.row="1">              <listview itemssource="{binding packageinfos, updatesourcetrigger=propertychanged}" >                 <listview.itemtemplate>                     <datatemplate datatype="{x:type local:packageinfo}">                         <stackpanel orientation="horizontal">                             <textblock text="{binding name}" />                             <textblock text="{binding pricerate}" />                                                    </stackpanel>                     </datatemplate>                 </listview.itemtemplate>             </listview>          </scrollviewer>             </grid>  </window>

you dont have code. class packageinfo im betting class incorrect. should 

public class packageinfo {     public string name { get; set; }     public string pricerate { get; set; }     public string imageurl { get; set; } }

i used code class , displayed fine me. oh had remove grid styler xaml because dont have code.


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