WPF Binding to IsEnabled Property in ListBox' ContextMenu's MenuItem -

i looking @ other threads regarding databinding contextmenus couldnt figure out how work since suggestions/answers wouldnt work me.

i have listbox, bound obversablecollection - works fine.

now have contextmenu inside listbox. contextmenu has 4 items activate, deactivate etc selected task (which item represented in listbox).

due permissions, need control, wether items in contextmenu enabled or disabled, have set isenabled-property of contextmenuitem binding same collection listbox bound to.

but reason, contextmenu items not getting disabled - property seems ignored.

---

edit: have implemented suggestion:

wpf

<listview margin="10,10,10,55" name="listviewcurrentjobs" itemssource="{binding jobcollection}">     <listview.contextmenu>         <contextmenu>             <menuitem header="starten" command="{binding path=startcommand}"/>             <menuitem header="stoppen" command="{binding path=stopcommand}"/>             <menuitem header="aktivieren" command="{binding path=enablecommand}"/>             <menuitem header="deaktivieren" command="{binding path=disablecommand}"/>             <menuitem header="löschen" command="{binding path=deletecommand}"/>         </contextmenu>     </listview.contextmenu>     <listview.view>         <gridview>             <gridviewcolumn header="" width="32">                 <gridviewcolumn.celltemplate>                     <datatemplate>                         <stackpanel orientation="horizontal">                             <image source="{binding state}" width="16"/>                         </stackpanel>                     </datatemplate>                 </gridviewcolumn.celltemplate>             </gridviewcolumn>             <gridviewcolumn header="name" displaymemberbinding="{binding description}" />         </gridview>     </listview.view> </listview> 

c#

public class currentjob : monitoringwindow {     public string state { get; set; }     public string description { get; set; }      public bool startpermitted { get; set; }     public bool stoppermitted { get; set; }     public bool enablepermitted { get; set; }     public bool disablepermitted { get; set; }     public bool deletepermitted { get; set; }      public icommand startcommand { get; private set; }     public icommand stopcommand { get; private set; }     public icommand enablecommand { get; private set; }     public icommand disablecommand { get; private set; }     public icommand deletecommand { get; private set; }      public currentjob()     {         startcommand = new delegatecommand(executestart, canexecutestart);         stopcommand = new delegatecommand(executestop, canexecutestop);         enablecommand = new delegatecommand(executeenable, canexecuteenable);         disablecommand = new delegatecommand(executedisable, canexecutedisable);         deletecommand = new delegatecommand(executedelete, canexecutedelete);     }      public bool canexecutestart()     {         return startpermitted;     }     public bool canexecutestop()     {         return stoppermitted;     }     public bool canexecuteenable()     {         return enablepermitted;     }     public bool canexecutedisable()     {         return disablepermitted;     }     public bool canexecutedelete()     {         return deletepermitted;     }      public void executestart()     {         currentjob curjob = ((currentjob)listviewcurrentjobs.selecteditem);         string curjobname = curjob.name;         if (new taskservice().getfolder("docuware notifications").tasks[curjobname].enabled == false)             new taskservice().getfolder("docuware notifications").tasks[curjobname].enabled = true;         new taskservice().getfolder("docuware notifications").tasks[curjobname].run();         loadjobs();     }     public void executestop()     {         if (new taskservice().getfolder("docuware notifications").tasks[((currentjob)listviewcurrentjobs.selecteditem).name].enabled == true)         {             new taskservice().getfolder("docuware notifications").tasks[((currentjob)listviewcurrentjobs.selecteditem).name].stop();             loadjobs();         }     }     public void executeenable()     {         new taskservice().getfolder("docuware notifications").tasks[((currentjob)listviewcurrentjobs.selecteditem).name].enabled = true;         loadjobs();     }     public void executedisable()     {         new taskservice().getfolder("docuware notifications").tasks[((currentjob)listviewcurrentjobs.selecteditem).name].enabled = false;         loadjobs();     }     public void executedelete()     {         new taskservice().getfolder("docuware notifications").deletetask(((currentjob)listviewcurrentjobs.selecteditem).name);         if (ismssql)         {             mssqlconn.open();             new sqlcommand("delete dbo.docuwarenotifications name = '" + ((currentjob)listviewcurrentjobs.selecteditem).name + "'", mssqlconn).executenonquery();             mssqlconn.close();         }         else         {             mysqlconn.open();             new mysqlcommand("delete docuwarenotifications name = '" + ((currentjob)listviewcurrentjobs.selecteditem).name + "'", mysqlconn).executenonquery();             mysqlconn.close();         }         loadjobs();     } }  public partial class monitoringwindow : metrowindow {     [...]     foreach (task task in new taskservice().getfolder("docuware notifications").tasks)     {         if (task != null)         {             currentjob item = new currentjob();             switch (task.state)             {                 case taskstate.disabled:                     item.state = "/dwnotdesigner;component/images/disabled.png";                     item.description = task.name;                     break;                 case taskstate.ready:                     item.state = "/dwnotdesigner;component/images/active.png";                     item.description = task.name;                     break;                 case taskstate.running:                     item.state = "/dwnotdesigner;component/images/working.png";                     item.description = task.name;                     break;             }             item.startpermitted = startpermitted;             item.stoppermitted = stoppermitted;             item.enablepermitted = enablepermitted;             item.disablepermitted = disablepermitted;             item.deletepermitted = deletepermitted;             _jobcollection.add(item);         }     } } 

for reason there no change!

you try using command bindings (you'll need prism):

... <contextmenu datacontext="{binding placementtarget.datacontext, relativesource={relativesource self}}">     <menuitem command="{binding startcommand}"/>     ... </contextmenu> ... 

...

using microsoft.practices.composite.presentation.commands;  public class currentjob {     public icommand startcommand {get; private set;}     public currentjob ()     {          startcommand = new delegatecommand(executestart, canexecutestart);      }      private bool canexecutestart()     {         //determine whether start can executed         return true;     }      private void executestart()     {         //start here     } } 

here, executestart replaces startjob , canexecutestart replaces enablepermitted in original example.

---

edit helps explain why original code not work. changes bound properties picked if "propertychange" event fired property's object. implementing inotifypropertychanged fix problem.

---

edit more trivial problem original code is binding wrong object - presume no property startpermitted exists on feedcontextmenu (which anyway doesn't seem defined).

---

edit there still few issues above: 1) bindings case-sensitive, binding should {binding startcommand} etc. 2) need set context menu on individual items in list. following work:

    <listview margin="10,10,10,55" name="listviewcurrentjobs" itemssource="{binding jobcollection}">         <listview.itemtemplate>                 <datatemplate>                 <border borderbrush="black" borderthickness="2">                     <stackpanel orientation="horizontal" minheight="20" background="white">                         <stackpanel.contextmenu>                             <contextmenu datacontext="{binding placementtarget.datacontext, relativesource={relativesource self}}">                                 <menuitem header="starten" command="{binding path=startcommand}"/>                                 <menuitem header="stoppen" command="{binding path=stopcommand}"/>                                 <menuitem header="aktivieren" command="{binding path=enablecommand}"/>                                 <menuitem header="deaktivieren" command="{binding path=disablecommand}"/>                                 <menuitem header="löschen" command="{binding path=deletecommand}"/>                             </contextmenu>                         </stackpanel.contextmenu>                         <image source="{binding state}" width="16"/>                     </stackpanel>                 </border>             </datatemplate>         </listview.itemtemplate>     </listview>