WPF VB.Net

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Owner" Height="300" Width="300"
    >
  Create Owned Window

//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Namespace Windows
  Public Partial Class WindowOwnership
    Inherits System.Windows.Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub cmdCreate_Click(sender As Object, e As RoutedEventArgs)
      Dim win As New WindowOwnership()
      win.Owner = Me
      win.Title = "Owned Window"
      win.Height = Me.Height / 2
      win.Width = Me.Width / 2
      win.WindowStartupLocation = WindowStartupLocation.CenterOwner
      win.Show()
    End Sub
  End Class
End Namespace