combobox - wpf listbox checkbox combination, really stuck -

i trying link checkbox , listview together, , use binding method set path object in order set check-box ischecked status in listbox.

list<test1> datas = new list<test1>();  var data = new test1 {key = 1, value = "hello", isselected= true};     datas.add(data);     data = new test1 {key = 2, value = "hello2", isselected= false};     datas.add(data); 

what need happen if checkbox checked ( isselected true ) need populate values , when click , unclick checkbox in gui need select proper listeview item can tag property.

this code below not set checkbox ischecked.

<listbox itemssource="{binding}" name="lstswimlane" width="225" height="125" selectionchanged="lstswimlane_selectionchanged">     <listbox.itemtemplate>         <datatemplate>             <stackpanel orientation="horizontal">                 <checkbox ischecked="{binding relativesource={relativesource ancestortype=listboxitem}, path=isselected, mode=twoway}"                                            checked="checkbox_checked"                                            unchecked="checkbox_unchecked" />                 <textblock text="{binding path=value}"></textblock>             </stackpanel>         </datatemplate>     </listbox.itemtemplate> </listbox> 

what need change in order set check box value in object? tried inotifychange etc...

here object well.

public class test1 : inotifypropertychanged {     public event propertychangedeventhandler propertychanged;      private bool _ischecked;      public int key { get; set; }     public string value { get; set; }      public bool isselected     {         { return _ischecked; }          set         {             if(_ischecked != value)             {                 _ischecked = value;                 onpropertychanged("isselected");             }         }     }      protected void onpropertychanged(string name)     {         if (propertychanged != null)             propertychanged(this, new propertychangedeventargs(name));     } } 

i new wpf, , stumped.

thanks.

do need work "three-way"? setting of 3 properties

• listboxitem.isselected
• checkbox.ischecked
• item1.isselected

will affect both of other properties? unfortunately, there no such binding in wpf you're gonna have little work.

update
pointed out robert rossney, better solution bind

• listboxitem.isselected item1.isselected
• checkbox.ischecked listboxitem.isselected

updated xaml

<listbox itemssource="{binding}"          name="lstswimlane"          selectionmode="multiple"          width="225" height="125" selectionchanged="lstswimlane_selectionchanged">     <listbox.itemcontainerstyle>         <style targettype="listboxitem">             <setter property="isselected"                 value="{binding path=isselected,                                 mode=twoway}"/>         </style>     </listbox.itemcontainerstyle>     <listbox.itemtemplate>         <datatemplate>             <stackpanel orientation="horizontal">                 <checkbox checked="checkbox_checked"                           unchecked="checkbox_unchecked"                           ischecked="{binding relativesource={relativesource ancestortype={x:type listboxitem}},                                               path=isselected}">                 </checkbox>                 <textblock text="{binding path=value}"/>             </stackpanel>         </datatemplate>     </listbox.itemtemplate> </listbox>