Listview does not change upon update
<GridViewColumn Width="70" Header="Status">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <!--<CheckBox IsChecked="{Binding Path=Status, Mode= Twoway}" HorizontalContentAlignment="Center" IsEnabled="False"/>-->
                                <TextBlock Text="{Binding Path=Status, Mode= Twoway}" TextAlignment="Center" Loaded="Page_Loaded"/>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>

public partial class tblADRMaster: INotifyPropertyChanged
    {
 public string Status
        {
            get { return _status; }
            set
            {
                if (_status != value)
                {
                    _status = value;
                    OnPropertyChanged("Status");
                }
            }
        }
}

ObservableCollection<tblADRMaster> list = new ObservableCollection<tblADRMaster>();
            CurrentCase = FileMaintenanceBusiness.Instance.GetADRMasterInfobyKeywordRefresh(caseNo.CaseIDSystem, "CaseIDSystem");
            foreach (var c in listFrWWC)
            {
                if (c.CaseIDSystem != CurrentCase.CaseIDSystem)
                    list.Add(c);
                else
                    list.Add(CurrentCase);

            }
            foreach (var caseMaster in list)
            {
                caseMaster.IsMissingDocs = GetMissingDoc(caseMaster.tblADRDispositions);
                caseMaster.IsProblemCase = !string.IsNullOrEmpty(caseMaster.ProblemNote) ? "Yes" : "No";
                caseMaster.Status = GetStatus(caseMaster);
            }

            lvAdrMaster.ItemsSource = list;

Text="{Binding Path=Status, Mode= Twoway, UpdateSourceTrigger=PropertyChanged}"

private ListCollectionView EmpCollectionView
    {
        get
        {
            return (ListCollectionView)CollectionViewSource.GetDefaultView(ListOfEmp);
        }
    }


    private ObservableCollection<Employee> listOfEmp = new ObservableCollection<Employee>();
    public ObservableCollection<Employee> ListOfEmp
    {
        get { return listOfEmp; }
        set { listOfEmp = value; }
    }

public void OnAdd(object sender)
    {
        ToggleButton tb = sender as ToggleButton;

        EmpCollectionView.SortDescriptions.Clear();
        if (tb.IsChecked == true)
        {

            EmpCollectionView.SortDescriptions.Add(new SortDescription(tb.Content.ToString(), ListSortDirection.Ascending));
            EmpCollectionView.Refresh();
        }
        else
        {
            EmpCollectionView.SortDescriptions.Add(new SortDescription(tb.Content.ToString(), ListSortDirection.Descending));
            EmpCollectionView.Refresh();
        }
    }