Procédure : modifier un document Office Open XML
Cette rubrique présente un exemple qui ouvre un document Office Open XML, le modifie et l'enregistre.
Pour plus d'informations sur le format Office Open XML, consultez www.openxmldeveloper.org.
Exemple
Cet exemple recherche le premier élément de paragraphe dans le document. Il récupère le texte du paragraphe, puis supprime toutes les exécutions de texte dans le paragraphe. Il crée une nouvelle exécution de texte composée du texte du premier paragraphe qui a été converti en majuscules. Il sérialise ensuite le code XML modifié dans le package Open XML et le ferme.
Cet exemple utilise des classes de l'assembly WindowsBase. Il utilise des types dans l'espace de noms System.IO.Packaging.
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
Si vous ouvrez SampleDoc.docx après avoir exécuté ce programme, vous constatez que ce programme a converti le premier paragraphe du document en majuscules.
Lorsqu'il est exécuté avec l'exemple de document Open XML décrit dans Création du document Office Open XML source, cet exemple produit la sortie suivante :
New first paragraph: >PARSING WORDPROCESSINGML WITH LINQ TO XML<