Use the content-scrolling methods of the ScrollViewer class
ScrollViewer Content Scrolling Methods
//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Automation.Provider
Imports System.Windows.Controls
Imports System.Windows.Documents
Imports System.Windows.Navigation
Imports System.Text
Namespace ScrollViewer_Methods
Public Partial Class Window1
Inherits Window
Private Sub onLoad(sender As Object, e As System.EventArgs)
Dim myStringBuilder As New StringBuilder(400)
For i As Integer = 0 To 99
myStringBuilder.Append("this is a test ")
Next
txt1.Text = myStringBuilder.ToString()
End Sub
Private Sub svLineUp(sender As Object, e As RoutedEventArgs)
sv1.LineUp()
End Sub
Private Sub svLineDown(sender As Object, e As RoutedEventArgs)
sv1.LineDown()
End Sub
Private Sub svLineRight(sender As Object, e As RoutedEventArgs)
sv1.LineRight()
End Sub
Private Sub svLineLeft(sender As Object, e As RoutedEventArgs)
sv1.LineLeft()
End Sub
Private Sub svPageUp(sender As Object, e As RoutedEventArgs)
sv1.PageUp()
End Sub
Private Sub svPageDown(sender As Object, e As RoutedEventArgs)
sv1.PageDown()
End Sub
Private Sub svPageRight(sender As Object, e As RoutedEventArgs)
sv1.PageRight()
End Sub
Private Sub svPageLeft(sender As Object, e As RoutedEventArgs)
sv1.PageLeft()
End Sub
End Class
End Namespace