Watermarks in word processing document

When adding watermark in Microsoft Word application, it places a shape with appropriate content in section headers. GroupDocs.Watermark API uses the same approach. When calling Add method of Watermarker class, the shape is added to a document.

Using properties of WordProcessingWatermarkBaseOptions

You can also set some additional options (Name or AlternativeText) when adding shape watermark to a Word document using GroupDocs.Watermark. Following code samples demonstrates it.

AdvancedUsage.AddingWatermarks.AddWatermarksToWordProcessing.WordProcessingAddWatermarkWithShapeSettings

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))
{
    TextWatermark watermark = new TextWatermark("Test watermark", new Font("Arial", 19));

    //Some settings for watermark
    watermark.VerticalAlignment = VerticalAlignment.Center;
    watermark.HorizontalAlignment = HorizontalAlignment.Center;
    watermark.RotateAngle = 25.0;
    watermark.ForegroundColor = Color.Red;
    watermark.Opacity = 1.0;

    WordProcessingWatermarkSectionOptions options = new WordProcessingWatermarkSectionOptions();

    // Set the shape name
    options.Name = "Shape 1";

    // Set the descriptive (alternative) text that will be associated with the shape
    options.AlternativeText = "Test watermark";

    watermarker.Add(watermark, options);
    watermarker.Save(Constants.OutDocumentDocx);
}

Using WordProcessingTextEffects

You can also apply some text effects to the shape watermarks as shown in the below code.

AdvancedUsage.AddingWatermarks.AddWatermarksToWordProcessing.WordProcessingAddWatermarkWithTextEffects

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))
{
    TextWatermark watermark = new TextWatermark("Test watermark", new Font("Arial", 19));

    WordProcessingTextEffects effects = new WordProcessingTextEffects();
    effects.LineFormat.Enabled = true;
    effects.LineFormat.Color = Color.Red;
    effects.LineFormat.DashStyle = OfficeDashStyle.DashDotDot;
    effects.LineFormat.LineStyle = OfficeLineStyle.Triple;
    effects.LineFormat.Weight = 1;

    WordProcessingWatermarkSectionOptions options = new WordProcessingWatermarkSectionOptions();
    options.Effects = effects;

    watermarker.Add(watermark, options);
    watermarker.Save(Constants.OutDocumentDocx);
}

Using WordProcessingImageEffects

GroupDocs.Watermark also provides the facility to apply image effects to the shape watermarks.

AdvancedUsage.AddingWatermarks.AddWatermarksToWordProcessing.WordProcessingAddWatermarkWithImageEffects

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))
{
    using (ImageWatermark watermark = new ImageWatermark(Constants.LogoPng))
    {
        WordProcessingImageEffects effects = new WordProcessingImageEffects();
        effects.Brightness = 0.7;
        effects.Contrast = 0.6;
        effects.ChromaKey = Color.Red;
        effects.BorderLineFormat.Enabled = true;
        effects.BorderLineFormat.Weight = 1;

        WordProcessingWatermarkSectionOptions options = new WordProcessingWatermarkSectionOptions();
        options.Effects = effects;

        watermarker.Add(watermark, options);
    }

    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:

Free online document watermarking App

Along with full featured .NET library we provide simple, but powerful free Apps.

You are welcome to add watermark to PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more with our free online Free Online Document Watermarking App.

Protecting word processing documents Saving documents