WPF

private void MoveControl(Control control, Window form)
        {
            TransformGroup tGroup = new TransformGroup();

            tGroup.Children.Add(new TranslateTransform(50.0, 50.0));
            control.RenderTransform = tGroup;

            DoubleAnimation dA_X = GenerateDoubleAnimation(-50, 50);
            DoubleAnimation dA_Y = GenerateDoubleAnimation(-50, 50);

            //Get the TranslateTransform for the rectangle (note Children[0], we added TranslateTransform first)
            TranslateTransform tt = (control.RenderTransform as TransformGroup).Children[0] as TranslateTransform;

            //Get the projected bounds of the control

            double dTop = Canvas.GetTop(control) + (double)dA_X.To;
            double dLeft = Canvas.GetLeft(control) + (double)dA_Y.To; 
            double dBottom = dTop + control.Height+ (double)dA_X.To;
            double dRight = dLeft+control.Width + (double)dA_Y.To;


            if (dTop > 0 && dLeft > 0 && dBottom < form.Height && dRight < form.Width)
            {
                tt.BeginAnimation(TranslateTransform.XProperty, dA_X);
                tt.BeginAnimation(TranslateTransform.YProperty, dA_Y);

                GeneralTransform myTrans = control.TransformToAncestor(this);
                Point p1 = myTrans.Transform(new Point(0, 0));

                control.SetValue(Canvas.LeftProperty, p1.X + dA_X.To);
                control.SetValue(Canvas.TopProperty, p1.Y + dA_Y.To);
            }
            else
            {
                MoveControl(control, form);
            }

        }
        DoubleAnimation GenerateDoubleAnimation(int min,int max)
        {
            DoubleAnimation da = new DoubleAnimation();
            
            //da.To = randomNumber.Next(min, max);
            da.To = randomNumber.Next(min, max);
            
            //da.AccelerationRatio = .8;
            //da.DecelerationRatio = .1;
            da.Duration = new Duration(TimeSpan.FromSeconds(.2));

            return da;
        }

<r:RibbonTab Header="Home" >
    <r:RibbonGroup Header="Imaging">
        <r:RibbonButton Label="Archive Images" />
        <r:RibbonButton Label="Our Images" />
    </r:RibbonGroup>
    <r:RibbonTab.Triggers>
        <Trigger Property="IsSelected" Value="True">
            <Setter /> <!-- Show only contentcontrol HomePage -->
        </Trigger>
    </r:RibbonTab.Triggers>
</r:RibbonTab>
...

<ContentControl x:Name="HomePage"  Visibility="Collapsed"/>
<ContentControl x:Name="DocPage" Visibility="Collapsed"/>

private void GridLoaded(object sender, RoutedEventArgs e)
{
    (sender as DataGrid).SelectionChanged += new SelectionChangedEventHandler(GridSelectionChanged);
}

private void GridSelectionChanged(object sender, SelectionChangedEventArgs e)
{
    DataGrid oDG = sender as DataGrid;
    int Index = oDG.SelectedIndex;
    if (Index >= 0 )
    {
        oDG.ScrollIntoView(oDG.SelectedItem, oDG.Columns[0]);
    }
}

Loaded="GridLoaded"

public static UserDetailsVM UserDetailsVMStatic
{
    get
    {
        if (_UserDetailsVM == null)
        {
            CreateUserDetailsVM();
        }
        return _UserDetailsVM;
    }
}

DataContext="{Binding UserDetailsVMStatic, Source={StaticResource Locator}}" 

<TextBox Grid.Row="2" Grid.Column="1" Text="{Binding EditableUserDetails.Email, Mode=TwoWay}"/>

<br />
  ......<br />
       private static  DependencyPropertyKey ItemsPropertyKey = <br />
            DependencyProperty.RegisterReadOnly("MyItems",<br />
            typeof(List<TextBlock>), typeof(AutoCompleteTextBox),<br />
            new FrameworkPropertyMetadata(new List<TextBlock>(), MyListChanged)<br />
       );<br />
<br />
       static void MyListChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)<br />
       {<br />
          //my code   <br />
       }<br />
<br />
       public List<TextBlock> MyItems<br />
       {<br />
            get { return (List<TextBlock>)GetValue(FileNameProperty); }<br />
            set { SetValue(FileNameProperty, value); }<br />
       }<br />
   .........<br />