Applying Watermark in Word (DocIO) Library
9 Sep 20246 minutes to read
Watermarks are text or pictures that appear behind the document text. You can access the watermark in the document by using the Watermark property of WordDocument class.
There are two types of watermarks: Text and Picture.
Text Watermark
You can add or modify text watermark in the Word document. TextWatermark class represents text watermark in the Word document.
The following code example illustrates how to add a text watermark to the Word document.
NOTE
Refer to the appropriate tabs in the code snippets section: C# [Cross-platform] for ASP.NET Core, Blazor, Xamarin, UWP, .NET MAUI, and WinUI; C# [Windows-specific] for WinForms and WPF; VB.NET [Windows-specific] for VB.NET applications.
//Creates a new Word document
WordDocument document = new WordDocument();
//Adds a section and a paragraph in the document
document.EnsureMinimal();
IWParagraph paragraph = document.LastParagraph;
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.");
//Creates a new text watermark
TextWatermark textWatermark = new TextWatermark("TextWatermark", "", 250, 100);
//Sets the created watermark to the document
document.Watermark = textWatermark;
//Sets the text watermark font size
textWatermark.Size = 72;
//Sets the text watermark layout to Horizontal
textWatermark.Layout = WatermarkLayout.Horizontal;
textWatermark.Semitransparent = false;
//Sets the text watermark text color
textWatermark.Color = Color.Black;
//Saves the Word document to MemoryStream
MemoryStream stream = new MemoryStream();
document.Save(stream, FormatType.Docx);
//Closes the document
document.Close();//Creates a new Word document
WordDocument document = new WordDocument();
//Adds a section and a paragraph in the document
document.EnsureMinimal();
IWParagraph paragraph = document.LastParagraph;
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.");
//Creates a new text watermark
TextWatermark textWatermark = new TextWatermark();
//Sets the created watermark to the document
document.Watermark = textWatermark;
//Sets the text watermark font size
textWatermark.Size = 72;
//Sets the text watermark layout to Horizontal
textWatermark.Layout = WatermarkLayout.Horizontal;
textWatermark.Semitransparent = false;
//Sets the text watermark text color
textWatermark.Color = Color.Black;
//Sets the text to text watermark text
textWatermark.Text = "TextWatermark";
document.Save("TextWatermark.docx", FormatType.Docx);
document.Close();'Creates a new Word document
Dim document As New WordDocument()
'Adds a section and a paragraph in the document
document.EnsureMinimal()
Dim paragraph As IWParagraph = document.LastParagraph
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.")
'Creates a new text watermark
Dim textWatermark As New TextWatermark()
'Sets the text watermark to the document
document.Watermark = textWatermark
'Sets the text watermark font size
textWatermark.Size = 72
'Sets the text watermark layout to Horizontal
textWatermark.Layout = WatermarkLayout.Horizontal
textWatermark.Semitransparent = False
'Sets the text watermark text color
textWatermark.Color = Color.Black
'Sets the text to the text watermark
textWatermark.Text = "TextWatermark"
document.Save("TextWatermark.docx", FormatType.Docx)
document.Close()You can download a complete working sample from GitHub.
Picture Watermark
You can add or modify picture watermark in the Word document. PictureWatermark class represents picture watermark in the Word document.
The following code example illustrates how to add a picture watermark to the Word document.
//Creates a new Word document
WordDocument document = new WordDocument();
//Adds a section and a paragraph in the document
document.EnsureMinimal();
IWParagraph paragraph = document.LastParagraph;
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.");
//Creates a new picture watermark.
PictureWatermark picWatermark = new PictureWatermark();
//Sets the scaling to picture.
picWatermark.Scaling = 120f;
picWatermark.Washout = true;
//Sets the picture watermark to document.
document.Watermark = picWatermark;
FileStream imageStream = new FileStream("Water lilies.jpg", FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(imageStream);
byte[] image = br.ReadBytes((int)imageStream.Length);
//Sets the image to the picture watermark.
picWatermark.LoadPicture(image);
//Saves the Word document to MemoryStream
MemoryStream stream = new MemoryStream();
document.Save(stream, FormatType.Docx);
//Closes the document
document.Close();//Creates a new Word document
WordDocument document = new WordDocument();
//Adds a section and a paragraph in the document
document.EnsureMinimal();
IWParagraph paragraph = document.LastParagraph;
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.");
//Creates a new picture watermark
PictureWatermark picWatermark = new PictureWatermark();
//Sets the scaling to picture
picWatermark.Scaling = 120f;
picWatermark.Washout = true;
//Sets the picture watermark to document
document.Watermark = picWatermark;
//Sets the image to the picture watermark
picWatermark.Picture = Image.FromFile(ImagesPath + "Water lilies.jpg");
document.Save("PictureWatermark.docx", FormatType.Docx);
document.Close();'Creates a new Word document
Dim document As New WordDocument()
'Adds a section and a paragraph in the document
document.EnsureMinimal()
Dim paragraph As IWParagraph = document.LastParagraph
paragraph.AppendText("AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company.")
'Creates a new picture watermark
Dim picWatermark As New PictureWatermark()
'Sets the scaling to picture
picWatermark.Scaling = 120.0F
picWatermark.Washout = True
Set the picture watermark to document
document.Watermark = picWatermark
Set the image to the picture watermark
picWatermark.Picture = Image.FromFile(ImagesPath + "Water lilies.jpg")
document.Save("PictureWatermark.docx", FormatType.Docx)
document.Close()You can download a complete working sample from GitHub.
Online Demo
- Explore how to insert text and picture watermark into the Word document using the .NET Word Library (DocIO) in a live demo here.