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

namespace InsertImgToBookmark_Doc
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建实例，加载文档
            Document document = new Document();
            document.LoadFromFile("test.docx");

            //实例化BookmarksNavigator类,指定需要添加图片的书签“Bookmark1”
            BookmarksNavigator bn = new BookmarksNavigator(document);
            bn.MoveToBookmark("Bookmark1", true, true);

            //添加段落，加载图片并插入到段落
            Section section0 = document.AddSection();
            Paragraph paragraph = section0.AddParagraph();
            Image image = Image.FromFile("img.png");
            DocPicture picture = paragraph.AppendPicture(image);
            bn.InsertParagraph(paragraph);
            document.Sections.Remove(section0);

            //保存文档并打开
            string output = "result.docx";
            document.SaveToFile(output, FileFormat.Docx);
            System.Diagnostics.Process.Start(output);
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using System.Data;

namespace InsertTableToBookmark_Doc
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建文档，加载文件
            Document doc = new Document();
            doc.LoadFromFile("test.docx");

            //创建Table对象
            Table table = new Table(doc, true);

            //创建模拟数据
            DataTable dt = new DataTable();
            dt.Columns.Add("PI", typeof(string));
            dt.Columns.Add("Type", typeof(string));
            dt.Columns.Add("Nov.", typeof(string));
            dt.Columns.Add("YTD", typeof(string));                     
            dt.Rows.Add(new string[] { "PI","Type", "Nov.", "YTD" });
            dt.Rows.Add(new string[] { "1", "BAIC EC-Series", "15.719", "64.910" });
            dt.Rows.Add(new string[] { "2", "Tesla Model S", "3.889", "46.951" });
            dt.Rows.Add(new string[] { "3", "Nissan Leaf", "2.817", "46.423" });

            //将数据填充至表格
            table.ResetCells(dt.Rows.Count, dt.Columns.Count);
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    table.Rows[i].Cells[j].AddParagraph().AppendText(dt.Rows[i][j].ToString());
                }
            }

            //获取指定书签位置
            BookmarksNavigator navigator = new BookmarksNavigator(doc);
            navigator.MoveToBookmark("origin2");

            //将表格添加至TextBodyPart
            TextBodyPart part = navigator.GetBookmarkContent();
            part.BodyItems.Add(table);

            //替换书签内容
            navigator.ReplaceBookmarkContent(part);

            //保存并打开文件
            doc.SaveToFile("output.docx", FileFormat.Docx2013);
            System.Diagnostics.Process.Start("output.docx");
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System;

namespace GetTextOfBookmark_Doc
{
    class Program
    {
        static void Main(string[] args)
        {
            //实例化Document类，加载测试文档
            Document doc = new Document();
            doc.LoadFromFile("test.docx");

            //初始化BookmarkNavigator类对象
            BookmarksNavigator navigator = new BookmarksNavigator(doc);
            //定位到指定书签位置，获取书签位置的文档内容
            navigator.MoveToBookmark("bookmark1");
            TextBodyPart textBodyPart = navigator.GetBookmarkContent();

            //遍历书签内容中的子项目，并将文本信息提取至string类型变量中
            string text = null;
            foreach (var item in textBodyPart.BodyItems)
            {
                if (item is Paragraph)
                {
                    foreach (var childObject in (item as Paragraph).ChildObjects)
                    {
                        if (childObject is TextRange)
                        {
                            text += (childObject as TextRange).Text;
                        }
                    }
                }
            }
            //控制台输出文本
            Console.WriteLine(text);
            Console.ReadLine();
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;

namespace EditOrReplaceBookmark_Doc
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建Document类实例，加载文档 
            Document document = new Document();
            document.LoadFromFile("test.docx");

            Section sec = document.AddSection();//添加section
            sec.AddParagraph().AppendText("Welcome Back, \n My Friend!"); //添加段落到section，并添加字符串内容

            //获取段落内容 
            ParagraphBase firstReplacementParagraph = sec.Paragraphs[0].Items.FirstItem as ParagraphBase;
            ParagraphBase lastReplacementParagraph = sec.Paragraphs[sec.Paragraphs.Count - 1].Items.LastItem as ParagraphBase;
            //实例化类TextBodySelection和TextBodyPart
            TextBodySelection selection = new TextBodySelection(firstReplacementParagraph, lastReplacementParagraph);
            TextBodyPart part = new TextBodyPart(selection);

            BookmarksNavigator bookmarkNavigator = new BookmarksNavigator(document);//实例化BookmarksNavigator类 
            bookmarkNavigator.MoveToBookmark("bookmark1", true, true);//定位到书签“bookmark1”所在段落的位置
            bookmarkNavigator.DeleteBookmarkContent(true);//删除原有书签位置的内容
            bookmarkNavigator.ReplaceBookmarkContent(part, true, true);//用新添加段落的内容替换掉原书签的内容并保留格式            
            document.Sections.Remove(sec); //移除section

            //保存文档并打开
            document.SaveToFile("替换书签.docx");
            System.Diagnostics.Process.Start("替换书签.docx");
        }
    }
}