[DefaultValue(null)]
public MiniMapBehavior Behavior { get; set; }

<DefaultValue(Nothing)>
Public Property Behavior As MiniMapBehavior

List<MiniMapBehavior> behaviors = new List<MiniMapBehavior> { 
    new FixedMiniMapBehavior(), 
    new DynamicMiniMapBehavior()
};

private void Form1_Load(object sender, EventArgs e) {
    cbAlignment.DataSource = Enum.GetValues(typeof(MiniMapAlignment));
    cbBehavior.DataSource = behaviors;
}
private void cbBehavior_SelectedIndexChanged(object sender, EventArgs e) {
    MiniMapBehavior behavior = cbBehavior.SelectedValue as MiniMapBehavior;
    if (behavior == null) return;
    propertyGrid.SelectedObject = behavior;

    if (mapControl.MiniMap == null) return;
    mapControl.MiniMap.Behavior = behavior;

}

Private behaviors As New List(Of MiniMapBehavior)() From { _
    New FixedMiniMapBehavior(), _
    New DynamicMiniMapBehavior() _
}

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    cbAlignment.DataSource = System.Enum.GetValues(GetType(MiniMapAlignment))
    cbBehavior.DataSource = behaviors
End Sub
Private Sub cbBehavior_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles cbBehavior.SelectedIndexChanged
    Dim behavior As MiniMapBehavior = TryCast(cbBehavior.SelectedValue, MiniMapBehavior)
    If behavior Is Nothing Then
        Return
    End If
    propertyGrid.SelectedObject = behavior

    If mapControl.MiniMap Is Nothing Then
        Return
    End If
    mapControl.MiniMap.Behavior = behavior

End Sub