c# - Binding a ListBox to a List<string> -

i trying bind list of strings contents of list box. reason, results bluetape list, contents of bluetapelist not ever make listbox. appreciated!

xaml:

    <listbox             name="lbxtapein"             grid.row="1"             grid.column="1"             grid.columnspan="1"             width="70"             height="80"             selectionchanged="tapeselectionchanged"             itemssource="{binding}"             selectedvalue="{binding selectedbt}"             background="deepskyblue"             foreground="midnightblue"                             horizontalalignment="center"             verticalalignment="center"             margin="5"/> 

code behind:

public partial class overrideaoibinningwindow : window {     private overrideaoibinningwindowviewmodel ovaoibinwin;     public overrideaoibinningwindow()     {         initializecomponent();         ovaoibinwin = new overrideaoibinningwindowviewmodel(tvwwaferlist, txtfilter);         assigndatacontexts();     }     private void assigndatacontexts()     {         btnchoosewafer.datacontext = ovaoibinwin;         btnsave.datacontext = ovaoibinwin;         txtwafer.datacontext = ovaoibinwin;         cbxaoistate.datacontext = ovaoibinwin;         lbxtapein.datacontext = ovaoibinwin.bluetapelist;     }     private void tapeselectionchanged(object sender, routedeventargs e)     {         if (!string.isnullorempty(ovaoibinwin.selectedwafer))         {             if (cbxaoistate.selectedvalue != null)             {                 btnsave.isenabled = true;             }         }     }     private void aoistatechanged(object sender, routedeventargs e)     {         if (!string.isnullorempty(ovaoibinwin.selectedwafer))         {             if (lbxtapein.selectedvalue != null)             {                 btnsave.isenabled = true;             }         }     }     private void close(object sender, routedeventargs e)     {         this.close();     } } 

view model:

public class overrideaoibinningwindowviewmodel : viewmodelbase, iselectwafers {     public overrideaoibinningwindowviewmodel(treeview tvwwaferlist, textbox txtfilter)     {         // set private fields         this.tvwwaferlist = tvwwaferlist;         this.txtfilter = txtfilter;          // instantiate objects , initialize settings         this.instantiateobjects();         this.setcontrolsettings();          // run initialization thread         initthread.runworkerasync();     }     public string selectedwafer     {                 {             return selectedwafer;         }         set         {             selectedwafer = value;             onpropertychanged("selectedwafer");         }     }     public string selectedbt     {                 {             return selectedbt;         }         set         {             selectedbt = value;             onpropertychanged("selectedbt");         }     }     public string selectedaoistate     {                 {             return selectedaoistate;         }         set         {             selectedaoistate = value;             onpropertychanged("selectedaoistate");         }     }     public list<string> aoistatelist     {                 {             return aoistatelist;         }         set         {             aoistatelist = value;             onpropertychanged("aoistatelist");         }     }     public list<string> bluetapelist     {                 {             return bluetapelist;         }         set         {             bluetapelist = value;             onpropertychanged("bluetapelist");         }     }     public icommand selectwafercommand     {                 {             if (selectwafercommand == null)             {                 selectwafercommand = new delegatecommand(selectwafer);             }             return selectwafercommand;         }     }     public icommand saveaoistatecommand     {                 {             if (saveaoistatecommand == null)             {                 saveaoistatecommand = new delegatecommand(saveaoistate);             }             return saveaoistatecommand;         }     }      private void instantiateobjects()     {         initthread = new backgroundworker();         aoistatelist = new list<string>();         bluetapelist = new list<string>();         converter = new waferidconverter();     }     private void setcontrolsettings()     {         initthread.workerreportsprogress = false;         initthread.workersupportscancellation = false;         initthread.dowork += initthread_dowork;         initthread.runworkercompleted += initthread_runworkercompleted;     }     private void populateaoistatelist()     {         aoistatelist.add("true");         aoistatelist.add("false");         aoistatelist.add("notbinned");         aoistatelist.add("neveraoi");     }     private void populatebluetapelist()     {         waferqueries = new waferqueries(             datalibrary.getsingulationone(selectedwafer));         foreach (bluetape tape in waferqueries.getbluetapelist())         {             bluetapelist.add(tape.name);         }         onpropertychanged("bluetapelist");     }     private void saveaoistate()     {         mouse.overridecursor = cursors.wait;         singone = new singonetable();         singone.overrideaoistate(selectedwafer, selectedbt, selectedaoistate);         mouse.overridecursor = null;         messagebox.show(             "the aoi state of " + selectedbt + " " + selectedwafer +             " has been changed " + selectedaoistate + "!",             "aoi state saved", messageboxbutton.ok, messageboximage.exclamation);     }     public void selectwafer()     {         mouse.overridecursor = cursors.wait;         selectedwafer = tvwwaferlist.selectedvalue.tostring();         populatebluetapelist();         mouse.overridecursor = null;     }      private void initthread_dowork(object sender, doworkeventargs e)     {         if (!handled)         {             populateaoistatelist();             tvwpresenter = new treeviewpresenter(tvwwaferlist, txtfilter, this);             tvwpresenter.waferlist = datalibrary.getwaferlist();             handled = true;         }     }     private void initthread_runworkercompleted(object sender, runworkercompletedeventargs e)     {         tvwpresenter.treeview.datacontext = tvwpresenter.processesandwafers;         tvwpresenter.waferlistcache = tvwpresenter.processesandwafers;         tvwpresenter.processarray = tvwpresenter.waferlistcache.toarray();         //todo: update status text block     } } 

answered (2nd comment) dilshod:

the fix change list observablecollection.

once made change, worked expected; dilshod!