I have around 10 word documents which I generate using open xml and other stuff.
Now I would like to create another word document and one by one I would like to join them into this newly created document.
I wish to use open xml, any hint would be appreciable.
Below is my code:
private void CreateSampleWordDocument()
{
//string sourceFile = Path.Combine("D:\\GeneralLetter.dot");
//string destinationFile = Path.Combine("D:\\New.doc");
string sourceFile = Path.Combine("D:\\GeneralWelcomeLetter.docx");
string destinationFile = Path.Combine("D:\\New.docx");
try
{
// Create a copy of the template file and open the copy
//File.Copy(sourceFile, destinationFile, true);
using (WordprocessingDocument document = WordprocessingDocument.Open(destinationFile, true))
{
// Change the document type to Document
document.ChangeDocumentType(DocumentFormat.OpenXml.WordprocessingDocumentType.Document);
//Get the Main Part of the document
MainDocumentPart mainPart = document.MainDocumentPart;
mainPart.Document.Save();
}
}
catch
{
}
}
Update( using AltChunks):
using (WordprocessingDocument myDoc = WordprocessingDocument.Open("D:\\Test.docx", true))
{
string altChunkId = "AltChunkId" + DateTime.Now.Ticks.ToString().Substring(0, 2) ;
MainDocumentPart mainPart = myDoc.MainDocumentPart;
AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart(
AlternativeFormatImportPartType.WordprocessingML, altChunkId);
using (FileStream fileStream = File.Open("D:\\Test1.docx", FileMode.Open))
chunk.FeedData(fileStream);
AltChunk altChunk = new AltChunk();
altChunk.Id = altChunkId;
mainPart.Document
.Body
.InsertAfter(altChunk, mainPart.Document.Body.Elements<Paragraph>().Last());
mainPart.Document.Save();
}
Why this code overwrites the content of the last file when I use multiple files?
Update 2:
using (WordprocessingDocument myDoc = WordprocessingDocument.Open("D:\\Test.docx", true))
{
MainDocumentPart mainPart = myDoc.MainDocumentPart;
string altChunkId = "AltChunkId" + DateTime.Now.Ticks.ToString().Substring(0, 3);
AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.WordprocessingML, altChunkId);
using (FileStream fileStream = File.Open("d:\\Test1.docx", FileMode.Open))
{
chunk.FeedData(fileStream);
AltChunk altChunk = new AltChunk();
altChunk.Id = altChunkId;
mainPart.Document
.Body
.InsertAfter(altChunk, mainPart.Document.Body
.Elements<Paragraph>().Last());
mainPart.Document.Save();
}
using (FileStream fileStream = File.Open("d:\\Test2.docx", FileMode.Open))
{
chunk.FeedData(fileStream);
AltChunk altChunk = new AltChunk();
altChunk.Id = altChunkId;
mainPart.Document
.Body
.InsertAfter(altChunk, mainPart.Document.Body
.Elements<Paragraph>().Last());
}
using (FileStream fileStream = File.Open("d:\\Test3.docx", FileMode.Open))
{
chunk.FeedData(fileStream);
AltChunk altChunk = new AltChunk();
altChunk.Id = altChunkId;
mainPart.Document
.Body
.InsertAfter(altChunk, mainPart.Document.Body
.Elements<Paragraph>().Last());
}
}
This code is appending the Test2 data twice, in place of Test1 data as well.
Means I get:
Test
Test2
Test2
instead of :
Test
Test1
Test2
Using openXML SDK only, you can use AltChunk
element to merge the multiple document into one.
This link the-easy-way-to-assemble-multiple-word-documents and this one How to Use altChunk for Document Assembly provide some samples.
EDIT 1
Based on your code that uses altchunk
in the updated question (update#1), here is the VB.Net code I have tested and that works like a charm for me:
Using myDoc = DocumentFormat.OpenXml.Packaging.WordprocessingDocument.Open("D:\\Test.docx", True)
Dim altChunkId = "AltChunkId" + DateTime.Now.Ticks.ToString().Substring(0, 2)
Dim mainPart = myDoc.MainDocumentPart
Dim chunk = mainPart.AddAlternativeFormatImportPart(
DocumentFormat.OpenXml.Packaging.AlternativeFormatImportPartType.WordprocessingML, altChunkId)
Using fileStream As IO.FileStream = IO.File.Open("D:\\Test1.docx", IO.FileMode.Open)
chunk.FeedData(fileStream)
End Using
Dim altChunk = New DocumentFormat.OpenXml.Wordprocessing.AltChunk()
altChunk.Id = altChunkId
mainPart.Document.Body.InsertAfter(altChunk, mainPart.Document.Body.Elements(Of DocumentFormat.OpenXml.Wordprocessing.Paragraph).Last())
mainPart.Document.Save()
End Using
EDIT 2
The second issue (update#2)
This code is appending the Test2 data twice, in place of Test1 data as
well.
is related to altchunkid
.
For each document you want to merge in the main document, you need to:
- add an
AlternativeFormatImportPart
in the mainDocumentPart
with an Id
which must to be unique. This element contains the Inserted data
- add in the body an
Altchunk
element in which you set the id
to reference the previous AlternativeFormatImportPart
.
In your code, you are using the same Id for all the AltChunks
. It's why you see many time the same text.
I am not sure the altchunkid will be unique with your code: string altChunkId = "AltChunkId" + DateTime.Now.Ticks.ToString().Substring(0, 2);
If you don't need to set a specific value, I recommend you to not set explicitly the AltChunkId
when you add the AlternativeFormatImportPart
. Instead, you get one generated by the SDK like this:
VB.Net
Dim chunk As AlternativeFormatImportPart = mainPart.AddAlternativeFormatImportPart(DocumentFormat.OpenXml.Packaging.AlternativeFormatImportPartType.WordprocessingML)
Dim altchunkid As String = mainPart.GetIdOfPart(chunk)
C#
AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart(DocumentFormat.OpenXml.Packaging.AlternativeFormatImportPartType.WordprocessingML);
string altchunkid = mainPart.GetIdOfPart(chunk);
There is a nice wrapper API (Document Builder 2.2) around open xml specially designed to merge documents, with flexibility of choosing the paragraphs to merge etc. You can download it from here (update: moved to github).
The documentation and screen casts on how to use it are here.
Update: Code Sample
var sources = new List<Source>();
//Document Streams (File Streams) of the documents to be merged.
foreach (var stream in documentstreams)
{
var tempms = new MemoryStream();
stream.CopyTo(tempms);
sources.Add(new Source(new WmlDocument(stream.Length.ToString(), tempms), true));
}
var mergedDoc = DocumentBuilder.BuildDocument(sources);
mergedDoc.SaveAs(@"C:\TargetFilePath");
Types Source
and WmlDocument
are from Document Builder API.
You can even add the file paths directly if you choose to as:
sources.Add(new Source(new WmlDocument(@"C:\FileToBeMerged1.docx"));
sources.Add(new Source(new WmlDocument(@"C:\FileToBeMerged2.docx"));
Found this Nice Comparison between AltChunk
and Document Builder
approaches to merge documents - helpful to choose based on ones requirements.
You can also use DocX library to merge documents but I prefer Document Builder over this for merging documents.
Hope this helps.
Easy to use in C#:
using System;
using System.IO;
using System.Linq;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
namespace WordMergeProject
{
public class Program
{
private static void Main(string[] args)
{
byte[] word1 = File.ReadAllBytes(@"..\..\word1.docx");
byte[] word2 = File.ReadAllBytes(@"..\..\word2.docx");
byte[] result = Merge(word1, word2);
File.WriteAllBytes(@"..\..\word3.docx", result);
}
private static byte[] Merge(byte[] dest, byte[] src)
{
string altChunkId = "AltChunkId" + DateTime.Now.Ticks.ToString();
var memoryStreamDest = new MemoryStream();
memoryStreamDest.Write(dest, 0, dest.Length);
memoryStreamDest.Seek(0, SeekOrigin.Begin);
var memoryStreamSrc = new MemoryStream(src);
using (WordprocessingDocument doc = WordprocessingDocument.Open(memoryStreamDest, true))
{
MainDocumentPart mainPart = doc.MainDocumentPart;
AlternativeFormatImportPart altPart =
mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.WordprocessingML, altChunkId);
altPart.FeedData(memoryStreamSrc);
var altChunk = new AltChunk();
altChunk.Id = altChunkId;
OpenXmlElement lastElem = mainPart.Document.Body.Elements<AltChunk>().LastOrDefault();
if(lastElem == null)
{
lastElem = mainPart.Document.Body.Elements<Paragraph>().Last();
}
//Page Brake einfügen
Paragraph pageBreakP = new Paragraph();
Run pageBreakR = new Run();
Break pageBreakBr = new Break() { Type = BreakValues.Page };
pageBreakP.Append(pageBreakR);
pageBreakR.Append(pageBreakBr);
return memoryStreamDest.ToArray();
}
}
}