Protecting word processing documents

Since version 18.6, GroupDocs.Watermark provides a simplified way of protecting the Word documents with the password. The API allows you to protect as well as unprotect the Word documents. The following protection types are supported:

  • AllowOnlyRevisions: user can only add revision marks to the document.

  • AllowOnlyComments: user can only modify comments in the document.

  • AllowOnlyFormFields: user can only enter data in the form fields in the document.

  • ReadOnly: no changes are allowed to the document.

The protection types are added to the WordProcessingProtectionType enum. Following code samples demonstrate how to protect and unprotect Word documents.

Protecting a document

Following code sample protects a Word document with the password.

AdvancedUsage.AddingWatermarks.AddWatermarksToWordProcessing.WordProcessingProtectDocument

WordProcessingLoadOptions loadOptions = new WordProcessingLoadOptions();
// Constants.InDocumentDocx is an absolute or relative path to your document. Ex: @"C:\Docs\document.docx"
using (Watermarker watermarker = new Watermarker(Constants.InDocumentDocx, loadOptions))
{
    WordProcessingContent content = watermarker.GetContent<WordProcessingContent>();

    content.Protect(WordProcessingProtectionType.ReadOnly, "7654321");

    watermarker.Save(Constants.OutDocumentDocx);
}

Unprotecting a document

The following code sample shows how to unprotect a Word document regardless of password.

AdvancedUsage.AddingWatermarks.AddWatermarksToWordProcessing.WordProcessingUnProtectDocument

WordProcessingLoadOptions loadOptions = new WordProcessingLoadOptions();
// Constants.InDocumentDocx is an absolute or relative path to your document. Ex: @"C:\Docs\document.docx"
using (Watermarker watermarker = new Watermarker(Constants.InDocumentDocx, loadOptions))
{
    WordProcessingContent content = watermarker.GetContent<WordProcessingContent>();

    content.Unprotect();

    watermarker.Save(Constants.OutDocumentDocx);
}

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

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