WPF VB.Net

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="ControlDemos" Height="300" Width="400">
    
            TickPlacement="BottomRight" TickFrequency="5" IsSelectionRangeEnabled="True" 
      SelectionStart="60" SelectionEnd="90" ValueChanged="sl1_ValueChanged"/>
  


//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Imports System.Windows.Input
Namespace ControlDemos
  Public Partial Class Label
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub sl1_ValueChanged(sender As Object, e As EventArgs)
      If sl1.Value < sl1.SelectionStart Then
        sl1.Value = sl1.SelectionStart
      End If
      If sl1.Value > sl1.SelectionEnd Then
        sl1.Value = sl1.SelectionEnd
      End If
    End Sub
  End Class
End Namespace