c# - Force Binding isn't what I want -

my oneway binding isn't working i'm expecting.

when click button add new "person" doesn't add newly entered person listview until shut down , restart application (so value gets added db not ui)

what doing incorrectly? have inotifypropertychanged, have observablecollection... missing?

i have model:

    public class person : inotifypropertychanged     {         public event propertychangedeventhandler propertychanged;          private string _personname;         private string _personemail;         private string _personphone;         private datetime _persondob;          [primarykey, autoincrement]         public int personid { get; set; }         [maxlength(25)]         public string personname {             { return _personname; }             set             {                 _personname = value;                 onpropertychanged("personname");             }         }         [maxlength(50)]         public string personemail {              { return _personemail; }              set             {                 _personemail = value;                 onpropertychanged("personemail");             }          }          [maxlength(13)]         public string personphone {              { return _personphone; }              set             {                 _personphone = value;                 onpropertychanged("personphone");             }          }         public datetime persondob {             { return _persondob;}             set              {                  _persondob = value;                 onpropertychanged("persondob");             }         }         public boolean ispersonactive { get; set; }          public string summary         {             { return string.format("{0} - {1} : {2} -- {3}", personname, personemail, personphone, persondob); }         }          // create onpropertychanged method raise event          protected void onpropertychanged(string name)         {             propertychangedeventhandler handler = propertychanged;             if (handler != null)             {                 handler(this, new propertychangedeventargs(name));             }         }     } 

in viewmodel have this:

public class choresvm {     private observablecollection<win8chores.model.databasetables.person> _personlist;     public observablecollection<win8chores.model.databasetables.person> personlist     {         { return _personlist; }         set { _personlist = value; }     } 

...

    public observablecollection<win8chores.model.databasetables.person> selectallperson()     {         using (var db = new sqliteconnection(dbpath))         {             observablecollection<win8chores.model.databasetables.person> plist = new observablecollection<win8chores.model.databasetables.person>(db.query<win8chores.model.databasetables.person>("select personid,personname,personemail,persondob person"));             _personlist = new observablecollection<model.databasetables.person>(db.query<win8chores.model.databasetables.person>("select personid,personname,personemail,persondob person"));             return _personlist;         }     }      public void insertperson(string name, string email, string phone, datetime dob, boolean isactive = true)     {         dbpath = path.combine(windows.storage.applicationdata.current.localfolder.path, "mydb");         db = new sqliteconnection(dbpath);         using (db)         {             var p = db.insert(new win8chores.model.databasetables.person()             {                 personname = name,                 personemail = email,                 personphone = phone,                 persondob = dob,                 ispersonactive = isactive              });         }         selectallperson();     } 

then in view:

    public mainpage()     {         this.initializecomponent();         vm = new viewmodel.choresvm();         datacontext = vm;     }      private void btnadd_click(object sender, routedeventargs e)     {         datetime mydob = new datetime(1955, 02, 28);         vm.insertperson("test","test@live.com","123-456-7890", mydob);     } 

with xaml this:

<listview horizontalalignment="left" height="224" margin="287,344,0,0" verticalalignment="top" width="740" x:name="test" displaymemberpath="summary" itemssource="{binding personlist,  mode=oneway}" /> 

try implement inotifypropertychanged on choresvm , raise propertychanged("personlist") when initialize collection (in selectallperson() or personlist setter). way itemssource binding notified, collection property changed , pickup new collection. have typo. in binding have "personlist" (pascal case) property in camel case (personlist)