Annotation Service : FlowDocument « Windows Presentation Foundation « VB.Net

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VB.Net » Windows Presentation Foundation » FlowDocumentScreenshots 
Annotation Service
Annotation Service
      

<Window   
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:a="clr-namespace:System.Windows.Annotations;assembly=PresentationFramework"
    Title="Flow Document Reader + Annotations"
  x:Class="Window1" Initialized="OnInitialized" Closed="OnClosed">
  <StackPanel>
    <StackPanel Orientation="Horizontal">
      <Label>Control Annotations:</Label>
      <Button Command="a:AnnotationService.CreateTextStickyNoteCommand"
         CommandTarget="{Binding ElementName=reader}">Create Text Note</Button>
      <Button Command="a:AnnotationService.CreateInkStickyNoteCommand" CommandTarget="{Binding ElementName=reader}">
        Create Ink Note
      </Button>
      <Button Command="a:AnnotationService.DeleteStickyNotesCommand" CommandTarget="{Binding ElementName=reader}">
        Remove Note
      </Button>
      <Button Command="a:AnnotationService.CreateHighlightCommand"  CommandTarget="{Binding ElementName=reader}">
        Create Yellow Highlight
      </Button>
      <Button Command="a:AnnotationService.ClearHighlightsCommand" CommandTarget="{Binding ElementName=reader}">
        Remove Highlight
      </Button>
    </StackPanel>

    <FlowDocumentReader x:Name="reader">
      <FlowDocument>
        <Paragraph FontSize="22" FontWeight="Bold">Chapter 1</Paragraph>
        <Paragraph FontSize="35" FontWeight="Bold">Why WPF?</Paragraph>
        <Paragraph>
          this is a test
          this is a test
          this is a test
          this is a test
          this is a test
          this is a test
          this is a test
        </Paragraph>
        <Paragraph>
                this is a test 
                this is a test 
                this is a test 
                this is a test 
                this is a test 
                this is a test 
                this is a test 
                this is a test 
                
        </Paragraph>
        <Paragraph>
          this is another test
        </Paragraph>
        <Paragraph>...</Paragraph>
        <Paragraph>...</Paragraph>
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        <Paragraph>...</Paragraph>
      </FlowDocument>
    </FlowDocumentReader>
  </StackPanel>
</Window>

//File:Window.xaml.vb
Imports System
Imports System.IO
Imports System.Windows
Imports System.Windows.Annotations
Imports System.Windows.Annotations.Storage

Public Partial Class Window1
  Inherits Window
  Private stream As Stream

  Public Sub New()
    InitializeComponent()
  End Sub

  Protected Overloads Sub OnInitialized(sender As Object, e As EventArgs)
    Dim service As AnnotationService = AnnotationService.GetService(reader)
    If service Is Nothing Then
      stream = New FileStream("storage.xml", FileMode.OpenOrCreate)
      service = New AnnotationService(reader)
      Dim store As AnnotationStore = New XmlStreamStore(stream)
      service.Enable(store)
    End If
  End Sub

  Protected Overloads Sub OnClosed(sender As Object, e As EventArgs)
    Dim service As AnnotationService = AnnotationService.GetService(reader)
    If service IsNot Nothing AndAlso service.IsEnabled Then
      service.Store.Flush()
      service.Disable()
      stream.Close()
    End If
  End Sub
End Class

   
    
    
    
    
    
  
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