苏门答腊 PDFHTML to PDF

Sumatra PDF 无法将 HTML 转换为 PDF，它需要外部工具作为中介：

// NuGet: Install-Package SumatraPDF (Note: Sumatra is primarily a viewer, not a generator)
//苏门答腊 PDFdoesn't have direct C# integration forHTML 至 PDFconversion
// You would need to use external tools or libraries and then open with Sumatra
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //苏门答腊 PDFcannot directly convert HTML to PDF
        // You'd need to use wkhtmltopdf or similar, then view in Sumatra
        string htmlFile = "input.html";
        string pdfFile = "output.pdf";

        // Using wkhtmltopdf as intermediary
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "wkhtmltopdf.exe",
            Arguments = $"{htmlFile} {pdfFile}",
            UseShellExecute = false
        };
        Process.Start(psi)?.WaitForExit();

        // Then open with Sumatra
        Process.Start("SumatraPDF.exe", pdfFile);
    }
}

// NuGet: Install-Package SumatraPDF (Note: Sumatra is primarily a viewer, not a generator)
//苏门答腊 PDFdoesn't have direct C# integration forHTML 至 PDFconversion
// You would need to use external tools or libraries and then open with Sumatra
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //苏门答腊 PDFcannot directly convert HTML to PDF
        // You'd need to use wkhtmltopdf or similar, then view in Sumatra
        string htmlFile = "input.html";
        string pdfFile = "output.pdf";

        // Using wkhtmltopdf as intermediary
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "wkhtmltopdf.exe",
            Arguments = $"{htmlFile} {pdfFile}",
            UseShellExecute = false
        };
        Process.Start(psi)?.WaitForExit();

        // Then open with Sumatra
        Process.Start("SumatraPDF.exe", pdfFile);
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

这种方法要求

• 外部工具安装 (wkhtmltopdf)
• 进程启动和管理
• 多个故障点
• 无法对转换进行程序控制

将IronPDFHTML 转换为 PDF.

IronPDF 提供 HTML 到 PDF 的直接转换：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string htmlContent = "<h1>Hello World</h1><p>This isHTML 至 PDFconversion.</p>";

        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");

        Console.WriteLine("PDF created successfully!");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string htmlContent = "<h1>Hello World</h1><p>This isHTML 至 PDFconversion.</p>";

        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");

        Console.WriteLine("PDF created successfully!");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

RenderHtmlAsPdf 方法使用 Chromium 渲染引擎将 HTML 内容直接转换为 PDF。无需外部工具、无需流程管理、无需用户依赖。

苏门答腊 PDF显示器

Sumatra PDF 擅长通过流程执行查看 PDF：

// NuGet: Install-Package SumatraPDF.CommandLine (or direct executable)
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        string pdfPath = "document.pdf";

        //苏门答腊 PDFexcels at viewing PDFs
        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = "SumatraPDF.exe",
            Arguments = $"\"{pdfPath}\"",
            UseShellExecute = true
        };

        Process.Start(startInfo);

        // Optional: Open specific page
        // Arguments = $"-page 5 \"{pdfPath}\""
    }
}

// NuGet: Install-Package SumatraPDF.CommandLine (or direct executable)
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        string pdfPath = "document.pdf";

        //苏门答腊 PDFexcels at viewing PDFs
        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = "SumatraPDF.exe",
            Arguments = $"\"{pdfPath}\"",
            UseShellExecute = true
        };

        Process.Start(startInfo);

        // Optional: Open specific page
        // Arguments = $"-page 5 \"{pdfPath}\""
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

这种方法：

• 要求用户系统安装 Sumatra PDF
• 催生外部流程
• 不能以编程方式访问或修改 PDF 内容

IronPDF显示。

IronPDF 可以加载、处理并显示 PDF：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Diagnostics;

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        // Extract information
        Console.WriteLine($"Page Count: {pdf.PageCount}");

        //IronPDFcan manipulate and save, then open with default viewer
        pdf.SaveAs("modified.pdf");

        // Open with default PDF viewer
        Process.Start(new ProcessStartInfo("modified.pdf") { UseShellExecute = true });
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Diagnostics;

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        // Extract information
        Console.WriteLine($"Page Count: {pdf.PageCount}");

        //IronPDFcan manipulate and save, then open with default viewer
        pdf.SaveAs("modified.pdf");

        // Open with default PDF viewer
        Process.Start(new ProcessStartInfo("modified.pdf") { UseShellExecute = true });
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

IronPdf 的PdfDocument.FromFile()方法可加载文档供编程访问--提取页数、操作内容并在显示前保存修改。

苏门答腊 PDF文本提取

Sumatra PDF 无法以编程方式提取文本--它需要外部命令行工具：

//苏门答腊 PDFdoesn't provide C# API for text extraction
// You would need to use command-line tools or other libraries
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //苏门答腊 PDFis a viewer, not a text extraction library
        // You'd need to use PDFBox, iTextSharp, or similar for extraction

        string pdfFile = "document.pdf";

        // This would require external tools like pdftotext
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "pdftotext.exe",
            Arguments = $"{pdfFile} output.txt",
            UseShellExecute = false
        };

        Process.Start(psi)?.WaitForExit();

        string extractedText = File.ReadAllText("output.txt");
        Console.WriteLine(extractedText);
    }
}

//苏门答腊 PDFdoesn't provide C# API for text extraction
// You would need to use command-line tools or other libraries
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //苏门答腊 PDFis a viewer, not a text extraction library
        // You'd need to use PDFBox, iTextSharp, or similar for extraction

        string pdfFile = "document.pdf";

        // This would require external tools like pdftotext
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "pdftotext.exe",
            Arguments = $"{pdfFile} output.txt",
            UseShellExecute = false
        };

        Process.Start(psi)?.WaitForExit();

        string extractedText = File.ReadAllText("output.txt");
        Console.WriteLine(extractedText);
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

这种变通办法

• 需要安装外部工具 (pdftotext)
• 写入中间文件
• 无法以编程方式从特定页面提取
• 增加复杂性和故障点

IronPDF文本提取

IronPdf 提供本地文本提取 API：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        //提取文本from all pages
        string allText = pdf.ExtractAllText();
        Console.WriteLine("Extracted Text:");
        Console.WriteLine(allText);

        //提取文本from specific page
        string pageText = pdf.ExtractTextFromPage(0);
        Console.WriteLine($"\nFirst Page Text:\n{pageText}");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        //提取文本from all pages
        string allText = pdf.ExtractAllText();
        Console.WriteLine("Extracted Text:");
        Console.WriteLine(allText);

        //提取文本from specific page
        string pageText = pdf.ExtractTextFromPage(0);
        Console.WriteLine($"\nFirst Page Text:\n{pageText}");
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

ExtractAllText() 和 ExtractTextFromPage() 方法提供了对 PDF 内容的直接编程访问，而无需外部工具或中间文件。

详细能力比较

苏门答腊 PDF的优势

• 轻量级、快速的 PDF 查看器
• 开源和免费使用
• 简单和用户友好的界面
• 在旧系统上性能卓越
• 支持命令行打印

苏门答腊 PDF限制

• 仅限阅读器--无 PDF 创建或编辑功能
• 独立应用程序--不是集成库 -GPL许可证限制商业使用
• 需要外部流程管理
• 没有用于操作的编程应用程序接口
• 仅限桌面--不支持网络或云
• 用户必须单独安装
• 无文本提取 API

IronPDF的优势

• 全面的 PDF 创建和编辑
• 本地 .NET 库集成
• 企业使用的商业许可
• 基于 Chromium 的 HTML 渲染
• 完整的编程 API
• 跨平台支持（Windows、Linux、macOS）
• 网络应用支持
• 兼容云部署
• 文本和图像提取
• 安全和数字签名支持

IronPDF注意事项

• 商业许可模式
• 部署足迹大于简单的查看器