---
title: "How to: Manipulate a FlowDocument through the Blocks Property"
ms.date: "03/30/2017"
ms.custom: devdivchpfy22
description: Learn how to manipulate a FlowDocument through the Blocks property.
dev_langs: 
  - "csharp"
  - "vb"
helpviewer_keywords: 
  - "documents [WPF], manipulating FlowDocuments through Blocks property [WPF], , "
  - ", "
ms.assetid: cbb7291e-3f1b-433e-9e16-f4d93ced14e8
---
# How to: Manipulate a FlowDocument through the Blocks Property
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.  
  
## Create a new FlowDocument
 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>.  
  
 [!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksAdd](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksadd)]
 [!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksAdd](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksadd)]  
  
## Create a new Paragraph element
 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>.  
  
 [!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksInsert](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksinsert)]
 [!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksInsert](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksinsert)]  
  
## Get top-level Block elements
 The following example gets the number of top-level <xref:System.Windows.Documents.Block> elements contained in the <xref:System.Windows.Documents.FlowDocument>.  
  
 [!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksCount](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblockscount)]
 [!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksCount](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblockscount)]  
  
## Delete the last Block element
 The following example deletes the last <xref:System.Windows.Documents.Block> element in the <xref:System.Windows.Documents.FlowDocument>.  
  
 [!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksRemoveLast](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksremovelast)]
 [!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksRemoveLast](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksremovelast)]  
  
## Clear all the Block contents
 The following example clears all of the contents (<xref:System.Windows.Documents.Block> elements) from the <xref:System.Windows.Documents.FlowDocument>.  
  
 [!code-csharp[FlowDocumentSnippets#_FlowDocumentBlocksClear](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDocumentSnippets/CSharp/Window1.xaml.cs#_flowdocumentblocksclear)]
 [!code-vb[FlowDocumentSnippets#_FlowDocumentBlocksClear](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDocumentSnippets/visualbasic/window1.xaml.vb#_flowdocumentblocksclear)]  
  
## See also

- [Manipulate a Table's Row Groups through the RowGroups Property](how-to-manipulate-table-row-groups-through-the-rowgroups-property.md)
- [Manipulate a Table's Columns through the Columns Property](how-to-manipulate-table-columns-through-the-columns-property.md)
- [Manipulate a Table's Row Groups through the RowGroups Property](how-to-manipulate-table-row-groups-through-the-rowgroups-property.md)