给Word文档设置背景时，通常只能针对整篇文档设置统一的背景，如果需要对某些页面单独设置背景，则需要通过另外的方式来实现。本文通过C# 程序代码演示如何来实现。并附VB.NET代码作参考。

思路：通过在页眉中添加形状或者图片，并将形状或图片平铺（即设置形状或图片大小为页面大小）到整个页面。添加背景时，通过添加形状并设置形状颜色来设置成纯色背景效果；通过添加图片来实现图片背景效果。

本次程序运行环境中包括：引入Spire.Doc.dll；.Net Framework 4.5.1

设置不同背景时，分以下2种情况：

1. 只需设置首页背景和其他页面不同

1.1 设置纯色背景

【C#】

using Spire.Doc;

using Spire.Doc.Documents;

using Spire.Doc.Fields;

using System.Drawing;

namespace DifferentBackground1

{

    class Program

    {

        static void Main(string[] args)

        {

            //加载Word测试文档

            Document doc = new Document();

            doc.LoadFromFile("测试.docx");

            //获取第一节

            Section section = doc.Sections[0];

            //设置首页页眉页脚不同

            section.PageSetup.DifferentFirstPageHeaderFooter = true;

            //在首页页眉添加形状

            HeaderFooter firstpageheader = section.HeadersFooters.FirstPageFooter;//获取首页页眉

            firstpageheader.Paragraphs.Clear();//清除页眉默认的段落格式（因默认页眉格式中包含有一条横线）

            Paragraph firstpara = firstpageheader.AddParagraph();//重新添加段落

            float width = section.PageSetup.PageSize.Width;//获取页面宽度、高度

            float height = section.PageSetup.PageSize.Height;

            ShapeObject shape = firstpara.AppendShape(width, height, ShapeType.Rectangle);//添加形状

            shape.BehindText = true;//设置形状衬于文字下方

            shape.HorizontalAlignment = ShapeHorizontalAlignment.Center;//设置对齐方式，铺满页面

            shape.VerticalOrigin = VerticalOrigin.TopMarginArea;

            shape.FillColor = Color.LightBlue;//形状颜色

            //在其他页面的页眉中添加形状

            HeaderFooter otherheader = section.HeadersFooters.Header;

            otherheader.Paragraphs.Clear();

            Paragraph otherpara = otherheader.AddParagraph();

            ShapeObject shape1 = otherpara.AppendShape(width, height, ShapeType.Rectangle);

            shape1.BehindText = true;

            shape1.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            shape1.VerticalOrigin = VerticalOrigin.TopMarginArea;

            shape1.FillColor = Color.Pink;

            //保存文档

            doc.SaveToFile("ColorBackground1.docx", FileFormat.Docx2013);

            System.Diagnostics.Process.Start("ColorBackground1.docx");

        }

    }

}

【VB.NET】

Imports Spire.Doc

Imports Spire.Doc.Documents

Imports Spire.Doc.Fields

Imports System.Drawing

Namespace DifferentBackground1

    Class Program

        Private Shared Sub Main(args As String())

            '加载Word测试文档

            Dim doc As New Document()

            doc.LoadFromFile("测试.docx")

            '获取第一节

            Dim section As Section = doc.Sections(0)

            '设置首页页眉页脚不同

            section.PageSetup.DifferentFirstPageHeaderFooter = True

            '在首页页眉添加形状

            Dim firstpageheader As HeaderFooter = section.HeadersFooters.FirstPageFooter

            '获取首页页眉

            firstpageheader.Paragraphs.Clear()

            '清除页眉默认的段落格式（因默认页眉格式中包含有一条横线）

            Dim firstpara As Paragraph = firstpageheader.AddParagraph()

            '重新添加段落

            Dim width As Single = section.PageSetup.PageSize.Width

            '获取页面宽度、高度

            Dim height As Single = section.PageSetup.PageSize.Height

            Dim shape As ShapeObject = firstpara.AppendShape(width, height, ShapeType.Rectangle)

            '添加形状

            shape.BehindText = True

            '设置形状衬于文字下方

            shape.HorizontalAlignment = ShapeHorizontalAlignment.Center

            '设置对齐方式，铺满页面

            shape.VerticalOrigin = VerticalOrigin.TopMarginArea

            shape.FillColor = Color.LightBlue

            '形状颜色

            '在其他页面的页眉中添加形状

            Dim otherheader As HeaderFooter = section.HeadersFooters.Header

            otherheader.Paragraphs.Clear()

            Dim otherpara As Paragraph = otherheader.AddParagraph()

            Dim shape1 As ShapeObject = otherpara.AppendShape(width, height, ShapeType.Rectangle)

            shape1.BehindText = True

            shape1.HorizontalAlignment = ShapeHorizontalAlignment.Center

            shape1.VerticalOrigin = VerticalOrigin.TopMarginArea

            shape1.FillColor = Color.Pink

            '保存文档

            doc.SaveToFile("ColorBackground1.docx", FileFormat.Docx2013)

            System.Diagnostics.Process.Start("ColorBackground1.docx")

        End Sub

    End Class

End Namespace

1.2 设置图片背景

【C#】

using Spire.Doc;

using Spire.Doc.Documents;

using Spire.Doc.Fields;

namespace DifferentBackground1

{

    class Program

    {

        static void Main(string[] args)

        {

             //加载Word测试文档

            Document doc = new Document();

            doc.LoadFromFile("测试.docx");

            //获取第一节

            Section section = doc.Sections[0];

            //设置首页页眉页脚不同

            section.PageSetup.DifferentFirstPageHeaderFooter = true;

            HeaderFooter firstpageheader = section.HeadersFooters.FirstPageFooter;//获取首页页眉

            firstpageheader.Paragraphs.Clear();//清除页眉默认的段落格式（因默认页眉格式中包含有一条横线）

            Paragraph firstpara = firstpageheader.AddParagraph();//重新添加段落

            //获取页面宽度、高度

            float width = section.PageSetup.PageSize.Width;

            float height = section.PageSetup.PageSize.Height; 

            //添加图片到首页页眉

            DocPicture pic0 = firstpara.AppendPicture("1.png");

            pic0.TextWrappingStyle = TextWrappingStyle.Behind;

            pic0.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            pic0.VerticalOrigin = VerticalOrigin.TopMarginArea;

            pic0.Width = width;

            pic0.Height = height;

            //在其他页面的页眉中添加图片

            HeaderFooter otherheader = section.HeadersFooters.Header;

            otherheader.Paragraphs.Clear();

            Paragraph otherpara = otherheader.AddParagraph();

            DocPicture pic1 = otherpara.AppendPicture("2.png");

            pic1.TextWrappingStyle = TextWrappingStyle.Behind;

            pic1.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            pic1.VerticalOrigin = VerticalOrigin.TopMarginArea;

            pic1.Width = width;

            pic1.Height = height;

            //保存文档

            doc.SaveToFile("ImageBackground1.docx", FileFormat.Docx2013);

            System.Diagnostics.Process.Start("ImageBackground1.docx");

        }

    }

}

【VB.NET】

Imports Spire.Doc

Imports Spire.Doc.Documents

Imports Spire.Doc.Fields

Namespace DifferentBackground1

    Class Program

        Private Shared Sub Main(args As String())

            '加载Word测试文档

            Dim doc As New Document()

            doc.LoadFromFile("测试.docx")

            '获取第一节

            Dim section As Section = doc.Sections(0)

            '设置首页页眉页脚不同

            section.PageSetup.DifferentFirstPageHeaderFooter = True

            Dim firstpageheader As HeaderFooter = section.HeadersFooters.FirstPageFooter

            '获取首页页眉

            firstpageheader.Paragraphs.Clear()

            '清除页眉默认的段落格式（因默认页眉格式中包含有一条横线）

            Dim firstpara As Paragraph = firstpageheader.AddParagraph()

            '重新添加段落

            '获取页面宽度、高度

            Dim width As Single = section.PageSetup.PageSize.Width

            Dim height As Single = section.PageSetup.PageSize.Height

            '添加图片到首页页眉

            Dim pic0 As DocPicture = firstpara.AppendPicture("1.png")

            pic0.TextWrappingStyle = TextWrappingStyle.Behind

            pic0.HorizontalAlignment = ShapeHorizontalAlignment.Center

            pic0.VerticalOrigin = VerticalOrigin.TopMarginArea

            pic0.Width = width

            pic0.Height = height

            '在其他页面的页眉中添加图片

            Dim otherheader As HeaderFooter = section.HeadersFooters.Header

            otherheader.Paragraphs.Clear()

            Dim otherpara As Paragraph = otherheader.AddParagraph()

            Dim pic1 As DocPicture = otherpara.AppendPicture("2.png")

            pic1.TextWrappingStyle = TextWrappingStyle.Behind

            pic1.HorizontalAlignment = ShapeHorizontalAlignment.Center

            pic1.VerticalOrigin = VerticalOrigin.TopMarginArea

            pic1.Width = width

            pic1.Height = height

            '保存文档

            doc.SaveToFile("ImageBackground1.docx", FileFormat.Docx2013)

            System.Diagnostics.Process.Start("ImageBackground1.docx")

        End Sub

    End Class

End Namespace

2. 设置指定多个页面背景不同

注：给多个页面设置不同背景时，需要通过获取不同节的页眉来设置，本次程序环境中所用源文档已设置了多个节，如需手动设置分节，可参考代码：

document.Sections[0].Paragraphs[0].InsertSectionBreak(SectionBreakType.NoBreak);

2.1 设置纯色背景

【C#】

using Spire.Doc;

using Spire.Doc.Documents;

using Spire.Doc.Fields;

using System.Drawing;

namespace DifferentBackground2

{

    class Program

    {

        static void Main(string[] args)

        {

            //加载Word文档

            Document doc = new Document();

            doc.LoadFromFile("测试.docx");

            //获取第一节

            Section section1 = doc.Sections[0];

            //获取页面宽度、高度

            float width = section1.PageSetup.PageSize.Width;

            float height = section1.PageSetup.PageSize.Height;

            //添加图片到页眉

            HeaderFooter header1 = section1.HeadersFooters.Header;

            header1.Paragraphs.Clear();

            Paragraph para1 = header1.AddParagraph();

            ShapeObject shape1 = para1.AppendShape(width, height, ShapeType.Rectangle);//添加形状

            shape1.BehindText = true;//设置形状衬于文字下方

            shape1.HorizontalAlignment = ShapeHorizontalAlignment.Center;//设置对齐方式，铺满页面

            shape1.VerticalOrigin = VerticalOrigin.TopMarginArea;

            shape1.FillColor = Color.LightSalmon;//形状颜色

            //同理设置第二节页眉中的图片

            Section section2 = doc.Sections[1];

            HeaderFooter header2 = section2.HeadersFooters.Header;

            header2.Paragraphs.Clear();

            Paragraph para2 = header2.AddParagraph();

            ShapeObject shape2 = para2.AppendShape(width, height, ShapeType.Rectangle);//添加形状

            shape2.BehindText = true;//设置形状衬于文字下方

            shape2.HorizontalAlignment = ShapeHorizontalAlignment.Center;//设置对齐方式，铺满页面

            shape2.VerticalOrigin = VerticalOrigin.TopMarginArea;

            shape2.FillColor = Color.Moccasin;//形状颜色

            //同理设置第三节中的页眉中的图片

            Section section3 = doc.Sections[2];

            HeaderFooter header3 = section3.HeadersFooters.Header;

            header3.Paragraphs.Clear();

            Paragraph para3 = header3.AddParagraph();

            ShapeObject shape3 = para3.AppendShape(width, height, ShapeType.Rectangle);//添加形状

            shape3.BehindText = true;//设置形状衬于文字下方

            shape3.HorizontalAlignment = ShapeHorizontalAlignment.Center;//设置对齐方式，铺满页面

            shape3.VerticalOrigin = VerticalOrigin.TopMarginArea;

            shape3.FillColor = Color.LawnGreen;//形状颜色

            //保存文档

            doc.SaveToFile("ColorBackground2.docx", FileFormat.Docx2013);

            System.Diagnostics.Process.Start("ColorBackground2.docx");

        }

    }

}

【VB.NET】

Imports Spire.Doc

Imports Spire.Doc.Documents

Imports Spire.Doc.Fields

Imports System.Drawing

Namespace DifferentBackground2

    Class Program

        Private Shared Sub Main(args As String())

            '加载Word文档

            Dim doc As New Document()

            doc.LoadFromFile("测试.docx")

            '获取第一节

            Dim section1 As Section = doc.Sections(0)

            '获取页面宽度、高度

            Dim width As Single = section1.PageSetup.PageSize.Width

            Dim height As Single = section1.PageSetup.PageSize.Height

            '添加图片到页眉

            Dim header1 As HeaderFooter = section1.HeadersFooters.Header

            header1.Paragraphs.Clear()

            Dim para1 As Paragraph = header1.AddParagraph()

            Dim shape1 As ShapeObject = para1.AppendShape(width, height, ShapeType.Rectangle)

            '添加形状

            shape1.BehindText = True

            '设置形状衬于文字下方

            shape1.HorizontalAlignment = ShapeHorizontalAlignment.Center

            '设置对齐方式，铺满页面

            shape1.VerticalOrigin = VerticalOrigin.TopMarginArea

            shape1.FillColor = Color.LightSalmon

            '形状颜色

            '同理设置第二节页眉中的图片

            Dim section2 As Section = doc.Sections(1)

            Dim header2 As HeaderFooter = section2.HeadersFooters.Header

            header2.Paragraphs.Clear()

            Dim para2 As Paragraph = header2.AddParagraph()

            Dim shape2 As ShapeObject = para2.AppendShape(width, height, ShapeType.Rectangle)

            '添加形状

            shape2.BehindText = True

            '设置形状衬于文字下方

            shape2.HorizontalAlignment = ShapeHorizontalAlignment.Center

            '设置对齐方式，铺满页面

            shape2.VerticalOrigin = VerticalOrigin.TopMarginArea

            shape2.FillColor = Color.Moccasin

            '形状颜色

            '同理设置第三节中的页眉中的图片

            Dim section3 As Section = doc.Sections(2)

            Dim header3 As HeaderFooter = section3.HeadersFooters.Header

            header3.Paragraphs.Clear()

            Dim para3 As Paragraph = header3.AddParagraph()

            Dim shape3 As ShapeObject = para3.AppendShape(width, height, ShapeType.Rectangle)

            '添加形状

            shape3.BehindText = True

            '设置形状衬于文字下方

            shape3.HorizontalAlignment = ShapeHorizontalAlignment.Center

            '设置对齐方式，铺满页面

            shape3.VerticalOrigin = VerticalOrigin.TopMarginArea

            shape3.FillColor = Color.LawnGreen

            '形状颜色

            '保存文档

            doc.SaveToFile("ColorBackground2.docx", FileFormat.Docx2013)

            System.Diagnostics.Process.Start("ColorBackground2.docx")

        End Sub

    End Class

End Namespace

2.2 设置图片背景

【C#】

using Spire.Doc;

using Spire.Doc.Documents;

using Spire.Doc.Fields;

namespace DifferentBackground2

{

    class Program

    {

        static void Main(string[] args)

        {

            //加载Word文档

            Document doc = new Document();

            doc.LoadFromFile("测试.docx");

            //获取第一节

            Section section1 = doc.Sections[0];

            //添加图片到页眉

            HeaderFooter header1 = section1.HeadersFooters.Header;

            header1.Paragraphs.Clear();

            Paragraph para1 = header1.AddParagraph();

            DocPicture pic1 = para1.AppendPicture("1.png");

            pic1.TextWrappingStyle = TextWrappingStyle.Behind;

            pic1.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            pic1.VerticalOrigin = VerticalOrigin.TopMarginArea;

            float width = section1.PageSetup.PageSize.Width;

            float height = section1.PageSetup.PageSize.Height;

            pic1.Width = width;

            pic1.Height = height;

            //同理设置第二节页眉中的图片

            Section section2 = doc.Sections[1];

            HeaderFooter header2 = section2.HeadersFooters.Header;

            header2.Paragraphs.Clear();

            Paragraph para2 = header2.AddParagraph();

            DocPicture pic2 = para2.AppendPicture("2.png");

            pic2.TextWrappingStyle = TextWrappingStyle.Behind;

            pic2.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            pic2.VerticalOrigin = VerticalOrigin.TopMarginArea;

            pic2.Width = width;

            pic2.Height = height;

            //同理设置第三节中的页眉中的图片

            Section section3 = doc.Sections[2];

            HeaderFooter header3 = section3.HeadersFooters.Header;

            header3.Paragraphs.Clear();

            Paragraph para3 = header3.AddParagraph();

            DocPicture pic3 = para3.AppendPicture("3.png");

            pic3.TextWrappingStyle = TextWrappingStyle.Behind;

            pic3.HorizontalAlignment = ShapeHorizontalAlignment.Center;

            pic3.VerticalOrigin = VerticalOrigin.TopMarginArea;

            pic3.Width = width;

            pic3.Height = height;

            //保存文档

            doc.SaveToFile("ImageBackground2.docx", FileFormat.Docx2013);

            System.Diagnostics.Process.Start("ImageBackground2.docx");

        }

    }

}

【VB.NET】

Imports Spire.Doc

Imports Spire.Doc.Documents

Imports Spire.Doc.Fields

Namespace DifferentBackground2

    Class Program

        Private Shared Sub Main(args As String())

            '加载Word文档

            Dim doc As New Document()

            doc.LoadFromFile("测试.docx")

            '获取第一节

            Dim section1 As Section = doc.Sections(0)

            '添加图片到页眉

            Dim header1 As HeaderFooter = section1.HeadersFooters.Header

            header1.Paragraphs.Clear()

            Dim para1 As Paragraph = header1.AddParagraph()

            Dim pic1 As DocPicture = para1.AppendPicture("1.png")

            pic1.TextWrappingStyle = TextWrappingStyle.Behind

            pic1.HorizontalAlignment = ShapeHorizontalAlignment.Center

            pic1.VerticalOrigin = VerticalOrigin.TopMarginArea

            Dim width As Single = section1.PageSetup.PageSize.Width

            Dim height As Single = section1.PageSetup.PageSize.Height

            pic1.Width = width

            pic1.Height = height

            '同理设置第二节页眉中的图片

            Dim section2 As Section = doc.Sections(1)

            Dim header2 As HeaderFooter = section2.HeadersFooters.Header

            header2.Paragraphs.Clear()

            Dim para2 As Paragraph = header2.AddParagraph()

            Dim pic2 As DocPicture = para2.AppendPicture("2.png")

            pic2.TextWrappingStyle = TextWrappingStyle.Behind

            pic2.HorizontalAlignment = ShapeHorizontalAlignment.Center

            pic2.VerticalOrigin = VerticalOrigin.TopMarginArea

            pic2.Width = width

            pic2.Height = height

            '同理设置第三节中的页眉中的图片

            Dim section3 As Section = doc.Sections(2)

            Dim header3 As HeaderFooter = section3.HeadersFooters.Header

            header3.Paragraphs.Clear()

            Dim para3 As Paragraph = header3.AddParagraph()

            Dim pic3 As DocPicture = para3.AppendPicture("3.png")

            pic3.TextWrappingStyle = TextWrappingStyle.Behind

            pic3.HorizontalAlignment = ShapeHorizontalAlignment.Center

            pic3.VerticalOrigin = VerticalOrigin.TopMarginArea

            pic3.Width = width

            pic3.Height = height

            '保存文档

            doc.SaveToFile("ImageBackground2.docx", FileFormat.Docx2013)

            System.Diagnostics.Process.Start("ImageBackground2.docx")

        End Sub

    End Class

End Namespace

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