Follow the xaml
<Window x:Class="WPFextk"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
Title="MainWindow" Height="350" Width="525" >
<Grid Name="MainWinPanel" KeyboardNavigation.TabNavigation="Cycle" >
</Grid>
</Window>
follow code behind
Class WPFextk
Private Sub Window_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded
Dim magnifier As New Xceed.Wpf.Toolkit.Magnifier
magnifier.BorderBrush = Brushes.Blue
magnifier.Radius = 75
magnifier.ZoomFactor = 0.3526
Me.MainWinPanel.Children.Add(magnifier)
Dim tbx As New TextBlock
tbx.Text = "qwxqsxjwosnd 2epun qodunf oqeu fboweub p weinu c"
Me.MainWinPanel.Children.Add(tbx)
End Sub
End Class
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