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50 lines
3.7 KiB
Markdown
50 lines
3.7 KiB
Markdown
---
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title: "How to: Manipulate a FlowDocument through the Blocks Property"
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "documents [WPF], manipulating FlowDocuments through Blocks property [WPF], , "
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- ", "
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ms.assetid: cbb7291e-3f1b-433e-9e16-f4d93ced14e8
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---
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# How to: Manipulate a FlowDocument through the Blocks Property
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These examples demonstrate some of the more common operations that can be performed on a <xref:System.Windows.Documents.FlowDocument> through the <xref:System.Windows.Documents.FlowDocument.Blocks%2A> property.
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## Example
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The following example creates a new <xref:System.Windows.Documents.FlowDocument> and then appends a new <xref:System.Windows.Documents.Paragraph> element to the <xref:System.Windows.Documents.FlowDocument>.
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[!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksAdd](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksadd)]
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[!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksAdd](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksadd)]
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## Example
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The following example creates a new <xref:System.Windows.Documents.Paragraph> element and inserts it at the beginning of the <xref:System.Windows.Documents.FlowDocument>.
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[!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksInsert](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksinsert)]
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[!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksInsert](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksinsert)]
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## Example
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The following example gets the number of top-level <xref:System.Windows.Documents.Block> elements contained in the <xref:System.Windows.Documents.FlowDocument>.
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[!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksCount](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblockscount)]
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[!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksCount](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblockscount)]
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## Example
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The following example deletes the last <xref:System.Windows.Documents.Block> element in the <xref:System.Windows.Documents.FlowDocument>.
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[!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksRemoveLast](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksremovelast)]
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[!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksRemoveLast](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksremovelast)]
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## Example
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The following example clears all of the contents (<xref:System.Windows.Documents.Block> elements) from the <xref:System.Windows.Documents.FlowDocument>.
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[!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksClear](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksclear)]
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[!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksClear](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksclear)]
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## See also
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- [Manipulate a Table's Row Groups through the RowGroups Property](how-to-manipulate-table-row-groups-through-the-rowgroups-property.md)
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- [Manipulate a Table's Columns through the Columns Property](how-to-manipulate-table-columns-through-the-columns-property.md)
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- [Manipulate a Table's Row Groups through the RowGroups Property](how-to-manipulate-table-row-groups-through-the-rowgroups-property.md)
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