水印是在 Word 文檔的背景中以淡色或灰色顯示的文本或圖像。它們可用于聲明文檔的機密性、版權或其他屬性，或者僅用作裝飾以使文檔更具吸引力。本文展示了一種在Spire.Doc for .NET的幫助下在 Word 文檔中插入水印的簡單方法，包括文本水印和圖像水印。

Spire.Doc for.NET 最新下載

為 .NET 安裝 Spire.Doc

首先，您需要將 Spire.Doc for.NET 包中包含的 DLL 文件添加為 .NET 項目中的引用。DLL 文件可以從此鏈接下載或通過NuGet安裝。

PM> Install-Package Spire.Doc

在 Word 文檔中插入文本水印

詳細步驟如下：

• 創建Document類的對象。
• 使用Document.LoadFromFile()方法從磁盤加載 Word 文檔。
• 使用自定義方法InsertTextWatermark()在文檔中插入文本水印。
• 使用Doucment.SaveToFile()方法保存文檔。

【C＃】

using System;
using System.Drawing;
using Spire.Doc;
using Spire.Doc.Documents;

namespace InsertImageWatermark
{
internal class Program
{
static void Main(string[] args)
{
//Create an object of Document class
Document document = new Document();

//Load a Word document from disk
document.LoadFromFile(@"D:\Samples\Sample.docx");

//Insert a text watermark
InsertTextWatermark(document.Sections[0]);

//Save the document
document.SaveToFile("InsertTextWatermark.docx", FileFormat.Docx);
}
private static void InsertTextWatermark(Section section)
{
TextWatermark txtWatermark = new TextWatermark();
txtWatermark.Text = "DO NOT COPY";
txtWatermark.FontSize = 50;
txtWatermark.Color = Color.Blue;
txtWatermark.Layout = WatermarkLayout.Diagonal;
section.Document.Watermark = txtWatermark;

}
}
}

【VB.NET】

Imports System
Imports System.Drawing
Imports Spire.Doc
Imports Spire.Doc.Documents

Module Program
Sub Main(args As String())
'Create an object of Document class
Dim document As New Document()

'Load a Word document from disk
document.LoadFromFile("D:\Samples\Sample.docx")

'Insert a text watermark
InsertTextWatermark(document.Sections(0))

'Save the document
document.SaveToFile("InsertTextWatermark.docx", FileFormat.Docx)
End Sub
Private Sub InsertTextWatermark(ByVal section As Section)
Dim txtWatermark As New Spire.Doc.TextWatermark()
txtWatermark.Text = "DO NOT COPY"
txtWatermark.FontSize = 50
txtWatermark.Color = Color.Blue
txtWatermark.Layout = WatermarkLayout.Diagonal
section.Document.Watermark = txtWatermark
End Sub
End Module

在 Word 文檔中插入圖像水印

詳細步驟如下：

• 創建Document類的對象。
• 使用Document.LoadFromFile()方法從磁盤加載 Word 文檔。
• 使用自定義方法InsertImageWatermark()在文檔中插入圖像水印。
• 使用Document.SaveToFile()方法保存文檔。

【C＃】

using System;
using System.Drawing;
using Spire.Doc;
using Spire.Doc.Documents;

namespace InsertWatermark
{
internal class Program
{
static void Main(string[] args)
{
//Create an object of Document class
Document document = new Document();

//Load a Word document from disk
document.LoadFromFile(@"D:\Samples\Sample.docx");

//Insert an image watermark
InsertImageWatermark(document);

//Save the document
document.SaveToFile("InsertImageWatermark.docx", FileFormat.Docx);
}
private static void InsertImageWatermark(Document document)
{
PictureWatermark picture = new PictureWatermark();
picture.Picture = Image.FromFile(@"D:\Samples\Watermark.png");
picture.Scaling = 200;
picture.IsWashout = false;
document.Watermark = picture;
}
}
}

【VB.NET】

Imports System
Imports System.Drawing
Imports Spire.Doc
Imports Spire.Doc.Documents

Module Program
Sub Main(args As String())
'Create an object of Document class
Dim document As New Document()

'Load a Word document from disk
document.LoadFromFile("D:\Samples\Sample.docx")

'Insert an image watermark
InsertImageWatermark(document)

'Save the document
document.SaveToFile("InsertImageWatermark.docx", FileFormat.Docx)
End Sub
Private Sub InsertImageWatermark(ByVal document As Document)
Dim picture As New PictureWatermark()
picture.Picture = Image.FromFile("D:\Samples\Watermark.png")
picture.Scaling = 250
picture.IsWashout = False
document.Watermark = picture
End Sub
End Module

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