实现合并Word文档功能主要涉及到以下几个步骤:
1. 安装OpenXML SDK
OpenXML SDK是用于处理Office文件的开源API,我们可以使用它来处理Word文档。
安装方法:
- 在Visual Studio中打开NuGet包管理器(Tools -> NuGet Package Manager -> Manage NuGet Packages for Solution)
- 在Browse选项卡中搜索OpenXML SDK并安装
2. 初始化合并文档
将要合并的文档分别读取到MemoryStream中,然后使用DocumentBuilder将它们合并到一个新的Document中。代码示例:
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
using System.IO;
public static void MergeDocuments(string outputFilePath, params string[] filesToMerge)
{
using (WordprocessingDocument doc = WordprocessingDocument.Create(outputFilePath, WordprocessingDocumentType.Document))
{
MainDocumentPart mainPart = doc.AddMainDocumentPart();
// 创建Document对象和Body对象
mainPart.Document = new Document();
Body body = new Body();
foreach (string file in filesToMerge) // 读取每个文件
{
using (FileStream stream = File.Open(file, FileMode.Open))
{
// 将文件流读取到MemoryStream中
MemoryStream memoryStream = new MemoryStream();
stream.CopyTo(memoryStream);
// 使用DocumentBuilder插入MemoryStream中的文档内容
DocumentBuilder builder = new DocumentBuilder();
builder.InsertDocument(memoryStream, body);
}
}
mainPart.Document.Append(body);
}
}
3. 定制合并规则
默认情况下,合并文档会保留每个源文档自己的样式和格式。如果你想使用特定的合并规则来控制样式和格式,你可以在这里定制它们。代码示例:
using DocumentFormat.OpenXml.Wordprocessing;
using System.Linq;
public static void CustomizeMergeRules(MainDocumentPart mainPart)
{
// 假设我们只希望保留第一个文档的标题
IEnumerable<Paragraph> paragraphs = mainPart.Document.Body.Elements<Paragraph>();
int i = 0;
foreach (Paragraph p in paragraphs)
{
if (i == 0) // 第一个段落
{
p.ParagraphProperties = new ParagraphProperties(new KeepNext(), new KeepLines(), new SpacingBetweenLines() { After = "0" }, new OutlineLevel() { Val = 0 });
Run r = p.GetFirstChild<Run>();
if (r != null)
{
RunProperties rProps = r.RunProperties ?? new RunProperties();
rProps.Bold = new Bold();
rProps.FontSize = new FontSize() { Val = "32" };
rProps.Color = new DocumentFormat.OpenXml.Wordprocessing.Color() { Val = "2E74B5" };
rProps.Underline = new Underline();
rProps.Underline.Val = UnderlineValues.Single;
r.RunProperties = rProps;
}
}
else // 其他段落
{
p.ParagraphProperties = new ParagraphProperties(new KeepNext(), new KeepLines(), new SpacingBetweenLines() { After = "0" }, new OutlineLevel() { Val = 0 });
p.RemoveAllChildren<ParagraphProperties>();
Run r = p.GetFirstChild<Run>();
if (r != null)
{
RunProperties rProps = r.RunProperties ?? new RunProperties();
rProps.Bold = null;
rProps.FontSize = new FontSize() { Val = "24" };
rProps.Color = new DocumentFormat.OpenXml.Wordprocessing.Color() { Val = "000000" };
rProps.Underline = null;
r.RunProperties = rProps;
}
}
i++;
}
}
示例1
合并两个Word文档,输出到指定路径下。代码如下:
string file1 = "doc1.docx";
string file2 = "doc2.docx";
string outputFile = "output.docx";
MergeDocuments(outputFile, file1, file2);
示例2
在合并文档时,只保留第一个文档的标题,并改变其他文档的格式。代码如下:
string file1 = "doc1.docx";
string file2 = "doc2.docx";
string outputFile = "output.docx";
using (var doc = WordprocessingDocument.Create(outputFile, WordprocessingDocumentType.Document))
{
var mainPart = doc.AddMainDocumentPart();
mainPart.Document = new Document();
foreach (string file in new[] { file1, file2 })
{
using (var stream = File.Open(file, FileMode.Open))
{
var otherDoc = WordprocessingDocument.Open(stream, false);
var otherBody = otherDoc.MainDocumentPart.Document.Body;
var otherSections = otherDoc.MainDocumentPart.Document.Body.Elements<SectionProperties>();
CustomizeMergeRules(mainPart);
if (mainPart.Document.Body.Count() == 0)
{
mainPart.Document.Body.Append(otherSections.CloneNode(true));
}
mainPart.Document.Body.Append(otherBody.CloneNode(true));
}
}
// 确保第一个段落是新文档的第一篇文章
var firstSection = mainPart.Document.Descendants<SectionProperties>().FirstOrDefault();
var firstParagraph = mainPart.Document.Descendants<Paragraph>().FirstOrDefault();
var clonedSection = (SectionProperties)firstSection.CloneNode(true);
clonedSection.PrevMarker = null;
firstParagraph.InsertBeforeSelf(clonedSection);
}
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