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Add dynamic content controls to a word document

By , 21 Apr 2012
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Introduction

This article tells how to add dynamic content controls to an existing Word document at run-time. I assume users have the basic knowledge of office Open XML SDK 2.0.

Code Walkthrough

  1. Create a Word document template which has two content controls.

    Open Microsoft Word. Click on 'Developer' ribbon. Then choose 'Plain text content control'.



    It will add a content control on the document. Click on Properties. This will open Content Properties window. Let us tag the first control as "cc1".



    Similarly create another control and tag it as "cc2". In design mode the two controls would look like



    Save the file as word template ("Doc1.dotx").
  2. Include the Doc1.dotx file in the project, right click on it and set Build action as Content & Copy to output directory as Copy if Newer,

  3. Create two lists that would contain static and dynamic content control tag names.

    private static List<string> staticContentControls = new List<string>() { "cc1", "cc2" };
    private static List<string> dynamicContentControls = new List<string>() { "cc3", "cc4",
                                                                              "cc5" };
  4. In the main method,
  5. static void Main(string[] args)
    {
       // convert template to document
       TemplateToDocument("Doc1.dotx", "Doc1.docx");
       File.Copy("Doc1.docx", "Doc2.docx");
       using (WordprocessingDocument wordDoc = WordprocessingDocument.Open("Doc2.docx", true))
       {
             // add content to static content controls
             AddContent(wordDoc);
             // create new content controls
             CreateNewContentControls(wordDoc);
             // add content to dynamically created content controls
             AddContent(wordDoc);
             wordDoc.MainDocumentPart.Document.Save();
        }
    }
  6. TemplateToDocument will convert Doc1.dotx to Doc1.docx.

    MemoryStream presentationStream = null;
    using (Stream tplStream = File.Open(templateFile, FileMode.Open, FileAccess.Read))
    {
       presentationStream = new MemoryStream((int)tplStream.Length);
       tplStream.Copy(presentationStream);
       presentationStream.Position = 0L;
    }
    using (WordprocessingDocument wordPackage = 
                  WordprocessingDocument.Open(presentationStream, true))
      {
             wordPackage.ChangeDocumentType(
                    DocumentFormat.OpenXml.WordprocessingDocumentType.Document);
             MainDocumentPart docPart = wordPackage.MainDocumentPart;
             docPart.AddExternalRelationship("http://schemas.openxmlformats.org/" + 
                    "officeDocument/2006/relationships/attachedTemplate",
             new Uri(templateFile, UriKind.RelativeOrAbsolute));
             docPart.Document.Save();
      }
      File.WriteAllBytes(documentFile, presentationStream.ToArray());  

    The AddContent method will add a sample text to the content placeholder (I have chosen the sample text to be the tag name of the placeholder itself).

    private static void AddContent(WordprocessingDocument wordDoc)
    {
      var sdtBlocks = wordDoc.MainDocumentPart.Document.Body.ChildElements.OfType<SdtBlock>();
      foreach (SdtBlock block in sdtBlocks)
      {
        if (block.SdtProperties != null)
        {
           Tag blockTag = block.SdtProperties.ChildElements.OfType<Tag>().ElementAt(0);
           if (blockTag != null)
             if (staticContentControls.Contains(blockTag.Val.Value) || 
                         dynamicContentControls.Contains(blockTag.Val.Value))
               block.AddContent(blockTag.Val.Value);
        }
      }
    }  
  7. CreateNewControls would loop through the dynamicContentControls list, create new SdtBlock objects and add them to the Body object of the Document.
  8. dynamicContentControls.ForEach(cc =>
    {
        // creates a new paragraph
        // just to separate the content placeholders
        Paragraph breakParagraph = new Paragraph();
        // create content placeholder
        SdtBlock sdtBlock = new SdtBlock();
        SdtProperties sdtProperties = new SdtProperties();
        Tag tag = new Tag() { Val = cc };
        // other sdtBlock propertoes code
        SdtContentBlock sdtContentBlock = new SdtContentBlock();
        // sdt content block code
        Paragraph paragraph = new Paragraph();
        Run run = new Run()
        {
            RunProperties = new RunProperties()
            {
                RunStyle = new RunStyle()
                {
                    Val = "PlaceholderText"
                }
            }
        };
        Text text = new Text();
        text.Text = "Click here to enter text.";
        run.Append(text);
        paragraph.Append(run);
        sdtContentBlock.Append(paragraph);
        sdtBlock.Append(sdtProperties);
        sdtBlock.Append(sdtContentBlock);
        // adds the newly created content placeholder to the document
        wordDoc.MainDocumentPart.Document.Body.Append(breakParagraph);
        wordDoc.MainDocumentPart.Document.Body.Append(sdtBlock);
    });
  9. Finally, call the Save() of Document Body object to save the changes done to the document.
  10. wordDoc.MainDocumentPart.Document.Save();

I have attached a sample solution. Please do have a look.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

pramodhegde88
Software Developer
India India
No Biography provided

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