.NET библиотека для чтения EPUB документов

Установить EpubReader через NuGet

NuGet\Install-Package VersOne.Epub -Version 3.2.0 

Вы также можете установить его вручную; загрузите последние файлы релиза напрямую из репозитория GitHub.

Чтение EPUB‑книги через .NET‑библиотеку

using System.Text;
using VersOne.Epub;
using HtmlAgilityPack;

// Load the book into memory
EpubBook book = EpubReader.ReadBook("test.epub");

// Print the title and the author of the book
Console.WriteLine($"Title: {book.Title}");
Console.WriteLine($"Author: {book.Author}");
Console.WriteLine();

// Print the table of contents
Console.WriteLine("TABLE OF CONTENTS:");
PrintTableOfContents();
Console.WriteLine();

// Print the text content of all chapters in the book
Console.WriteLine("CHAPTERS:");
PrintChapters();

void PrintTableOfContents()
{
    foreach (EpubNavigationItem navigationItem in book.Navigation)
    {
        PrintNavigationItem(navigationItem, 0);
    }
}

void PrintNavigationItem(EpubNavigationItem navigationItem, int identLevel)
{
    Console.Write(new string(' ', identLevel * 2));
    Console.WriteLine(navigationItem.Title);
    foreach (EpubNavigationItem nestedNavigationItem in navigationItem.NestedItems)
    {
        PrintNavigationItem(nestedNavigationItem, identLevel + 1);
    }
}

void PrintChapters()
{
    foreach (EpubTextContentFile textContentFile in book.ReadingOrder)
    {
        PrintTextContentFile(textContentFile);
    }
}

void PrintTextContentFile(EpubTextContentFile textContentFile)
{
    HtmlDocument htmlDocument = new();
    htmlDocument.LoadHtml(textContentFile.Content);
    StringBuilder sb = new();
    foreach (HtmlNode node in htmlDocument.DocumentNode.SelectNodes("//text()"))
    {
        sb.AppendLine(node.InnerText.Trim());
    }
    string contentText = sb.ToString();
    Console.WriteLine(contentText);
    Console.WriteLine();
}

Извлечение простого текста из EPUB‑книги с помощью C#

using System;
using System.Text;
using HtmlAgilityPack;

namespace VersOne.Epub.ConsoleDemo
{
    internal static class ExtractPlainText
    {
        public static void Run(string filePath)
        {
            EpubBook book = EpubReader.ReadBook(filePath);
            foreach (EpubTextContentFile textContentFile in book.ReadingOrder)
            {
                PrintTextContentFile(textContentFile);
            }
        }

        private static void PrintTextContentFile(EpubTextContentFile textContentFile)
        {
            HtmlDocument htmlDocument = new();
            htmlDocument.LoadHtml(textContentFile.Content);
            StringBuilder sb = new();
            foreach (HtmlNode node in htmlDocument.DocumentNode.SelectNodes("//text()"))
            {
                sb.AppendLine(node.InnerText.Trim());
            }
            string contentText = sb.ToString();
            Console.WriteLine(contentText);
            Console.WriteLine();
        }
    }
}

Как извлечь оглавление из EPUB‑книги с помощью .NET API?

using System;

namespace VersOne.Epub.ConsoleDemo
{
    internal static class PrintNavigation
    {
        public static void Run(string filePath)
        {
            using (EpubBookRef bookRef = EpubReader.OpenBook(filePath))
            {
                Console.WriteLine("Navigation:");
                foreach (EpubNavigationItemRef navigationItemRef in bookRef.GetNavigation())
                {
                    PrintNavigationItem(navigationItemRef, 0);
                }
            }
            Console.WriteLine();
        }

        private static void PrintNavigationItem(EpubNavigationItemRef navigationItemRef, int identLevel)
        {
            Console.Write(new string(' ', identLevel * 2));
            Console.WriteLine(navigationItemRef.Title);
            foreach (EpubNavigationItemRef nestedNavigationItemRef in navigationItemRef.NestedItems)
            {
                PrintNavigationItem(nestedNavigationItemRef, identLevel + 1);
            }
        }
    }
}