data binding - WPF Markup Not Seeing Type in a Different Namespace -

i'm sure noob question wpf databinding experience, noob. apologies ahead of time:

i'm trying bind collection of objects (ienumerable) listbox shown below. problem when logentry type in same namespace (activitylog) "codebehind", can see object's properties rendered in listbox. however; when logentry type in different namespace (activitylog.classes) nothing shows in listbox.

i've tried adding activitylog.classes namespace in xaml markup (xmlns:local="clr-namespace:activitylog.classes"), i'm sure there's additional step i'm missing.

please help.

namespace activitylog {     public partial class logpage : window     {         public logpage()         {             initializecomponent();             list<logentry> lelist = new list<logentry>() {  new logentry() { startdate=datetime.parse("2011-05-10 9:58:00"), activitydescription="three" + environment.newline},                                                               new logentry() { startdate=datetime.parse("2011-05-10 9:58:00"), activitydescription="four" + environment.newline}};             this.lstbox.itemssource = lelist;         }     }      public class logentry     {         public datetime startdate { get; set; }         public string activitydescription { get; set; }     } } 

<window x:class="activitylog.logpage"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"          xmlns:local="clr-namespace:activitylog.classes"           title="logpage" height="564" width="414" >     <grid>         <listbox width="361" margin="20,50,0,0" itemssource="{binding}" name="lstbox" height="429" verticalalignment="top" horizontalalignment="left">             <listbox.itemtemplate>                 <datatemplate>                     <stackpanel>                         <textblock text="{binding path=startdate}"/>                         <textblock text="{binding path=activitydescription}" />                     </stackpanel>                 </datatemplate>             </listbox.itemtemplate>         </listbox>     </grid> </window> 

you setting itemsource of listbox twice. once in codebehind

this.lstbox.itemssource = lelist;

then again in xaml

itemssource="{binding}"

in example provided codebehind version correct , should remove xaml version.

your xaml version binding datacontext property of logpage, if want hook way codebehind should setting

this.datacontext = lelist;