尋找預設的段落樣式

管理 WordprocessingML 文件中的資訊教學課程中的第一個工作是，尋找文件中的預設段落樣式。

範例

描述

下列範例會開啟 Office Open XML WordprocessingML 文件、尋找文件和封裝的樣式部分，然後執行尋找預設樣式名稱的查詢。如需有關 Office Open XML 文件封裝及其組成部分的詳細資訊，請參閱 Office Open XML WordprocessingML 文件的詳細資料。

查詢會尋找名稱為 w:style 的節點，其中擁有名稱為 w:type 且值為 "paragraph" 的屬性，同時也擁有名稱為 w:default 且值為 "1" 的屬性。由於這些屬性只有一個 XML 節點，查詢會使用 Enumerable.First 運算子，將集合轉換為單一子句。接著，它會取得名稱為 w:styleId 之屬性的值。

這個範例會使用 WindowsBase 組件的類別。它會使用 System.IO.Packaging 命名空間中的型別。

程式碼

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;

XDocument xDoc = null;
XDocument styleDoc = null;

using (Package wdPackage = Package.Open(fileName, FileMode.Open, FileAccess.Read))
{
    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.
        xDoc = XDocument.Load(XmlReader.Create(documentPart.GetStream()));

        //  Find the styles part. There will only be one.
        PackageRelationship styleRelation =
          documentPart.GetRelationshipsByType(stylesRelationshipType).FirstOrDefault();
        if (styleRelation != null)
        {
            Uri styleUri = PackUriHelper.ResolvePartUri(documentUri, styleRelation.TargetUri);
            PackagePart stylePart = wdPackage.GetPart(styleUri);

            //  Load the style XML in the part into an XDocument instance.
            styleDoc = XDocument.Load(XmlReader.Create(stylePart.GetStream()));
        }
    }
}

// The following query finds all the paragraphs that have the default style.
string defaultStyle = 
    (string)(
        from style in styleDoc.Root.Elements(w + "style")
        where (string)style.Attribute(w + "type") == "paragraph"&&
              (string)style.Attribute(w + "default") == "1"
              select style
    ).First().Attribute(w + "styleId");

Console.WriteLine("The default style is: {0}", defaultStyle);

Imports <xmlns:w="https://schemas.openxmlformats.org/wordprocessingml/2006/main">

Module Module1

    Sub Main()

        Const fileName As String = "SampleDoc.docx"

        Const documentRelationshipType As String = _
          "https://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument"
        Const stylesRelationshipType As String = _
          "https://schemas.openxmlformats.org/officeDocument/2006/relationships/styles"

        Dim xDoc As XDocument = Nothing
        Dim styleDoc As XDocument = Nothing

        Using wdPackage As Package = Package.Open(fileName, FileMode.Open, FileAccess.Read)
            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.
                xDoc = XDocument.Load(XmlReader.Create(documentPart.GetStream()))

                ' Find the styles part. There will only be one.
                Dim styleRelation As PackageRelationship = _
                  documentPart.GetRelationshipsByType(stylesRelationshipType).FirstOrDefault()
                If styleRelation IsNot Nothing Then
                    Dim styleUri As Uri = _
                      PackUriHelper.ResolvePartUri(documentUri, styleRelation.TargetUri)
                    Dim stylePart As PackagePart = wdPackage.GetPart(styleUri)

                    ' Load the style XML in the part into an XDocument instance.
                    styleDoc = XDocument.Load(XmlReader.Create(stylePart.GetStream()))
                End If
            End If
        End Using

        ' The following query finds all the paragraphs that have the default style.
        Dim defParas As IEnumerable(Of XElement) = _
            From style In styleDoc.Root.<w:style> _
            Where style.@w:type.Equals("paragraph") And _
                   style.@w:default.Equals("1") _
            Select style
        ' Then find the style of the first.
        Dim defaultStyle As String = defParas.First().@w:styleId

        Console.WriteLine("The default style is: " & defaultStyle)
    End Sub
End Module

註解

這個範例會產生下列輸出：

The default style is: Normal

後續步驟

在下一個範例中，我們將建立可在文件中尋找所有段落及其樣式的類似查詢：

• 擷取段落及其樣式

請參閱

概念

教學課程：管理 WordprocessingML 文件中的內容