WPF

<UserControl.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="..\Resources.xaml"/>
        </ResourceDictionary.MergedDictionaries>

        <Style TargetType="{x:Type TabItem}">
            <Setter Property="HeaderTemplate">
                <Setter.Value>
                    <DataTemplate >
                        <Grid HorizontalAlignment="Stretch" Height="22">

                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="20" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="2"  ></RowDefinition>
                                <RowDefinition Height="Auto" ></RowDefinition>
                            </Grid.RowDefinitions>
                            <TextBlock Grid.Row="1" 
                                        Text="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem} }, Path=Header}"
                                        VerticalAlignment="Bottom" Margin="4,0,8,0"/>
                            <Button Grid.Row="1" 
                                    Grid.Column="1"
                                    Height="16"
                                    Width="16"
                                    BorderBrush="{x:Null}" 
                                    Background="{x:Null}" 
                                    Foreground="#FF224A71" 
                                    VerticalAlignment="Center" 
                                    Padding="3,0"
                                    Command="{Binding RelativeSource={RelativeSource AncestorType={x:Type TabItem}}, Path=DataContext.CloseTabCommand}">

                                <TextBlock Text="x"
                                            VerticalAlignment="Center"
                                            HorizontalAlignment="Center"
                                            Margin="0,0,0,2"/>

                                <Button.ToolTip>
                                    <controls:ToolTipEx Style="{StaticResource TooltipStyle}"
                                                        HeaderText="Close"
                                                        Icon="/FMG.UI.WPF;component/Media/Images/closetab_24.png"
                                                        ContentAreaText="Closes this tab"/>
                                </Button.ToolTip>

                                <Button.OpacityMask>
                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                        <GradientStop Color="Black" Offset="0"/>
                                        <GradientStop Color="#4BFFFFFF" Offset="1"/>
                                    </LinearGradientBrush>
                                </Button.OpacityMask>

                            </Button>

                        </Grid>
                    </DataTemplate>
                </Setter.Value>
            </Setter>
        </Style>
          
    </ResourceDictionary>
</UserControl.Resources>

SLConnDomainContext dbContext = new SLConnDomainContext();
        private LoadOperation<Employee> loadOp;
        ObservableCollection<Employee> data = new ObservableCollection<Employee>();

        public Filters()
        {
            InitializeComponent();
            loadOp = this.dbContext.Load(this.dbContext.GetEmployeesQuery());
         loadOp.Completed += new EventHandler(loadOp_Completed);

        }

        void loadOp_Completed(object sender, EventArgs e)
        {
            foreach (Employee emp in loadOp.Entities)
            {
                data.Add(emp);
            }

            dataForm.ItemsSource = data;

        }

{

    public partial  class EmployeeService
    {
        private SLConnDomainContext Context = new SLConnDomainContext();
        private LoadOperation<Employee> loadOp;
        public ObservableCollection<Employee> employees = new ObservableCollection<Employee>();
        
        public EmployeeService()
        {
           
         
            loadOp = Context.Load(Context.GetEmployeesQuery(), LoadBehavior.MergeIntoCurrent, employeeCallBack, null);
             
        }
       


        void employeeCallBack(LoadOperation<Employee> op)
        {
            foreach (Employee emp in loadOp.Entities)
            {
                employees.Add(emp);
               
            }
            _myEmployees = employees;
	//using below to determine that data is retrieved
            MessageBox.Show("I have " + employees.Count + " employees");
        }
      

     
     
        public IEnumerable<Employee> GetEmployees()
       {
                  
            return employees;
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private ObservableCollection<Employee> _myEmployees;
        public ObservableCollection<Employee> myEmployees
        {
            get { return _myEmployees; }
            set
            {
                myEmployees = value;
                OnPropertyChanged("myEmployees");
            }
        }



        private int _EmployeeID;
        public int EmployeeID
        {
            get { return _EmployeeID; }
            set
            {
                _EmployeeID = value;
                OnPropertyChanged("EmployeeID");
            }
        }

        private int _VacationHours;
        public int VacationHours
        {
            get { return _VacationHours; }
            set
            {
                _VacationHours = value;
                OnPropertyChanged("VacationHours");
            }
        }


        protected void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
       
    }

}

public LayoutTest()
       {
           InitializeComponent();
          EmployeeService myservice = new EmployeeService();
          EmployeeList.DataContext = myservice;

       }

public IEnumerable<Employee> GetEmployees()
        {
            List<Employee> employees = new List<Employee>();
            EmployeeService test = new EmployeeService();
            foreach (Employee emp in test.GetEmployees())
            { 
            employees.Add(emp);
            }
              
            Employee employee = new Employee();
            employee.EmployeeID = 1111;
            employee.VacationHours = 100;

            employees.Add(employee);

            employee = new Employee();
            employee.EmployeeID = 1112;
            employee.VacationHours = 62;
            employees.Add(employee);

            employee = new Employee();
            employee.EmployeeID = 1113;
            employee.VacationHours = 132;
            employees.Add(employee);
            return employees;
        }