WPF

BindingOperations.SetBinding(DatabaseSelectorControl, DatabaseSelectorControl.IsValidProperty, binding);

DatabaseSelectorControl = ((App)Application.Current).DatabaseService.DBPlugins
    .OfType<DatabaseSelectorBase>()
    .FirstOrDefault(x => x.DatabaseType == SelectedDatabaseType.DatabaseType);

BindingOperations.SetBinding(DatabaseSelectorControl, DatabaseSelectorControl.IsValidProperty, binding);

BindingOperations.SetBinding(DatabaseSelectorControl, DatabaseSelectorBase.IsValidProperty, binding);

Gerry Schmitz wrote:

(If I didn't want to resort to "hit-point" calculations; and I don't).

    <Style x:Key="BaseShapeStyle"
        TargetType="Shape">
;Setter Property="Cursor" Value="Hand" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Top" />
        <Setter Property="Stroke" Value="{Binding Stroke}" />
        <Setter Property="StrokeThickness" Value="{Binding StrokeThickness}" />
        <Setter Property="Fill" Value="{Binding Fill}" />

    </Style>

    <Style x:Key="EllipseStyle" 
        TargetType="{x:Type Ellipse}"
        BasedOn="{StaticResource BaseShapeStyle}">

        <Setter Property="Height" Value="{Binding Height}" />
        <Setter Property="Width" Value="{Binding Width}" />

    </Style>

<Ellipse Style="{DynamicResource EllipseStyle}" 
            ToolTip="{Binding ElectrodeDisplayText}" 
            MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" 
            MouseLeftButtonUp="Ellipse_MouseLeftButtonUp" 
            MouseMove="Ellipse_MouseMove"/>

<DataGrid.RowStyle>
  <Style TargetType="DataGridRow">
    <Setter Property="IsSelected" Value="{Binding IsSelected}" />
  </Style TargetType="DataGridRow">
</DataGrid.RowStyle>

<telerik:RadGridView x:Name="tkGrid" Grid.Row="2"                                               ItemsSource="{Binding EntityList,Mode=TwoWay}"                                              SelectedItem="{Binding SelectedEntity,Mode=TwoWay}"                                                 >
<telerik:RadGridView.Columns> etc...

#region --------    Entity selected item<br />
   private EntityDB _SelectedEntity;
   public EntityDB SelectedEntity
   {
       get
       { return _SelectedEntity; }
       set
       {
           if (_SelectedEntity == value)
           { return; }
           var oldValue = _SelectedEntity;
           _SelectedEntity = value;
           base.RaisePropertyChanged("SelectedEntity");
       }
   }
   #endregion --------     Entity