How to: Modify an Office Open XML Document
This topic presents an example that opens an Office Open XML document, modifies it, and saves it.
For more information on Office Open XML, see www.openxmldeveloper.org.
Example
This example finds the first paragraph element in the document. It retrieves the text from the paragraph, and then deletes all text runs in the paragraph. It creates a new text run that consists of the first paragraph text that has been converted to upper case. It then serializes the changed XML into the Open XML package and closes it.
This example uses classes found in the WindowsBase assembly. It uses types in the System.IO.Packaging namespace.
public static class LocalExtensions
{
public static string StringConcatenate(this IEnumerable<string> source)
{
StringBuilder sb = new StringBuilder();
foreach (string s in source)
sb.Append(s);
return sb.ToString();
}
public static string StringConcatenate<T>(this IEnumerable<T> source,
Func<T, string> func)
{
StringBuilder sb = new StringBuilder();
foreach (T item in source)
sb.Append(func(item));
return sb.ToString();
}
public static string StringConcatenate(this IEnumerable<string> source, string separator)
{
StringBuilder sb = new StringBuilder();
foreach (string s in source)
sb.Append(s).Append(separator);
return sb.ToString();
}
public static string StringConcatenate<T>(this IEnumerable<T> source,
Func<T, string> func, string separator)
{
StringBuilder sb = new StringBuilder();
foreach (T item in source)
sb.Append(func(item)).Append(separator);
return sb.ToString();
}
}
class Program
{
public static string ParagraphText(XElement e)
{
XNamespace w = e.Name.Namespace;
return e
.Elements(w + "r")
.Elements(w + "t")
.StringConcatenate(element => (string)element);
}
static void Main(string[] args)
{
const string fileName = "SampleDoc.docx";
const string documentRelationshipType =
"https://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument";
const string stylesRelationshipType =
"https://schemas.openxmlformats.org/officeDocument/2006/relationships/styles";
const string wordmlNamespace =
"https://schemas.openxmlformats.org/wordprocessingml/2006/main";
XNamespace w = wordmlNamespace;
using (Package wdPackage = Package.Open(fileName, FileMode.Open, FileAccess.ReadWrite))
{
PackageRelationship docPackageRelationship =
wdPackage.GetRelationshipsByType(documentRelationshipType).FirstOrDefault();
if (docPackageRelationship != null)
{
Uri documentUri = PackUriHelper.ResolvePartUri(new Uri("/", UriKind.Relative),
docPackageRelationship.TargetUri);
PackagePart documentPart = wdPackage.GetPart(documentUri);
// Load the document XML in the part into an XDocument instance.
XDocument xDoc = XDocument.Load(XmlReader.Create(documentPart.GetStream()));
// Find the styles part. There will only be one.
PackageRelationship styleRelation =
documentPart.GetRelationshipsByType(stylesRelationshipType).FirstOrDefault();
PackagePart stylePart = null;
XDocument styleDoc = null;
if (styleRelation != null)
{
Uri styleUri = PackUriHelper.ResolvePartUri(documentUri, styleRelation.TargetUri);
stylePart = wdPackage.GetPart(styleUri);
// Load the style XML in the part into an XDocument instance.
styleDoc = XDocument.Load(XmlReader.Create(stylePart.GetStream()));
}
XElement paraNode = xDoc
.Root
.Element(w + "body")
.Descendants(w + "p")
.FirstOrDefault();
string paraText = ParagraphText(paraNode);
// remove all text runs
paraNode.Descendants(w + "r").Remove();
paraNode.Add(
new XElement(w + "r",
new XElement(w + "t", paraText.ToUpper())
)
);
// Save the XML into the package
using (XmlWriter xw =
XmlWriter.Create(documentPart.GetStream(FileMode.Create, FileAccess.Write)))
{
xDoc.Save(xw);
}
Console.WriteLine("New first paragraph: >{0}<", paraText.ToUpper());
}
}
}
}
Imports <xmlns:w="https://schemas.openxmlformats.org/wordprocessingml/2006/main">
Module Module1
<System.Runtime.CompilerServices.Extension()> _
Public Function StringConcatenate(ByVal source As IEnumerable(Of String)) As String
Dim sb As StringBuilder = New StringBuilder()
For Each s As String In source
sb.Append(s)
Next
Return sb.ToString()
End Function
<System.Runtime.CompilerServices.Extension()> _
Public Function StringConcatenate(Of T)(ByVal source As IEnumerable(Of T), _
ByVal func As Func(Of T, String)) As String
Dim sb As StringBuilder = New StringBuilder()
For Each item As T In source
sb.Append(func(item))
Next
Return sb.ToString()
End Function
<System.Runtime.CompilerServices.Extension()> _
Public Function StringConcatenate(Of T)(ByVal source As IEnumerable(Of T), _
ByVal separator As String) As String
Dim sb As StringBuilder = New StringBuilder()
For Each s As T In source
sb.Append(s).Append(separator)
Next
Return sb.ToString()
End Function
<System.Runtime.CompilerServices.Extension()> _
Public Function StringConcatenate(Of T)(ByVal source As IEnumerable(Of T), _
ByVal func As Func(Of T, String), ByVal separator As String) As String
Dim sb As StringBuilder = New StringBuilder()
For Each item As T In source
sb.Append(func(item)).Append(separator)
Next
Return sb.ToString()
End Function
Public Function ParagraphText(ByVal e As XElement) As String
Dim w As XNamespace = e.Name.Namespace
Return (e.<w:r>.<w:t>).StringConcatenate(Function(element) CStr(element))
End Function
' Following function is required because VB does not support short circuit evaluation
Private Function GetStyleOfParagraph(ByVal styleNode As XElement, _
ByVal defaultStyle As String) As String
If (styleNode Is Nothing) Then
Return defaultStyle
Else
Return styleNode.@w:val
End If
End Function
Sub Main()
Dim fileName = "SampleDoc.docx"
Dim documentRelationshipType = _
"https://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument"
Dim stylesRelationshipType = _
"https://schemas.openxmlformats.org/officeDocument/2006/relationships/styles"
Dim wordmlNamespace = _
"https://schemas.openxmlformats.org/wordprocessingml/2006/main"
Using wdPackage As Package = Package.Open(fileName, FileMode.Open, FileAccess.ReadWrite)
Dim docPackageRelationship As PackageRelationship = wdPackage _
.GetRelationshipsByType(documentRelationshipType).FirstOrDefault()
If (docPackageRelationship IsNot Nothing) Then
Dim documentUri As Uri = PackUriHelper.ResolvePartUri(New Uri("/", _
UriKind.Relative), docPackageRelationship.TargetUri)
Dim documentPart As PackagePart = wdPackage.GetPart(documentUri)
' Load the document XML in the part into an XDocument instance.
Dim xDoc As XDocument = XDocument.Load(XmlReader.Create(documentPart.GetStream()))
' Find the styles part. There will only be one.
Dim styleRelation As PackageRelationship = documentPart _
.GetRelationshipsByType(stylesRelationshipType).FirstOrDefault()
Dim stylePart As PackagePart = Nothing
Dim styleDoc As XDocument = Nothing
If (styleRelation IsNot Nothing) Then
Dim styleUri As Uri = PackUriHelper.ResolvePartUri( _
documentUri, styleRelation.TargetUri)
stylePart = wdPackage.GetPart(styleUri)
' Load the style XML in the part into an XDocument instance.
styleDoc = XDocument.Load(XmlReader.Create(stylePart.GetStream()))
End If
Dim paraNode As XElement = xDoc.Root.<w:body>...<w:p>.FirstOrDefault()
Dim paraText As String = ParagraphText(paraNode)
' Remove all text runs.
paraNode...<w:r>.Remove()
paraNode.Add(<w:r><w:t><%= paraText.ToUpper() %></w:t></w:r>)
' Save the XML into the package.
Using xw As XmlWriter = _
XmlWriter.Create(documentPart.GetStream(FileMode.Create, FileAccess.Write))
xDoc.Save(xw)
End Using
Console.WriteLine("New first paragraph: >{0}<", paraText.ToUpper())
End If
End Using
End Sub
End Module
If you open SampleDoc.docx after running this program, you can see that this program converted the first paragraph in the document to upper case.
When run with the sample Open XML document described in Creating the Source Office Open XML Document, this example produces the following output:
New first paragraph: >PARSING WORDPROCESSINGML WITH LINQ TO XML<