蘇門答臘 PDFHTML 至 PDF

Sumatra PDF 無法將 HTML 轉換為 PDF - 它需要外部工具作為中介：

// NuGet: Install-Package SumatraPDF (Note: Sumatra is primarily a viewer, not a generator)
//蘇門答臘 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()
    {
        //蘇門答臘 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)
//蘇門答臘 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()
    {
        //蘇門答臘 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

此方法要求：

• 外部工具安裝 (wkhtmltopdf)
• 流程產生與管理
• 多點失敗
• 無法對轉換進行程式控制

IronPDFHTML to PDF

IronPDF 提供 HTML 到 PDF 的直接轉換：

// 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 渲染引擎直接將 HTML 內容轉換為 PDF。無需外部工具、無需進程管理、無需使用者依賴。

蘇門答臘 PDF顯示

Sumatra PDF 擅長透過流程執行檢視 PDF：

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

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

        //蘇門答臘 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";

        //蘇門答臘 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

這種方法

• 需要在使用者的系統上安裝 Sumatra PDF
• 產生外部程序
• 無法以程式化方式存取或修改 PDF 內容

IronPDF顯示。

IronPDF 可以載入、處理 PDF，然後顯示 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() 方法會載入文件以進行程式化存取 - 在顯示前提取頁數、處理內容並儲存修改。

蘇門答臘 PDF文本萃取

Sumatra PDF 無法以程式化的方式擷取文字 - 它需要外部的指令列工具：

//蘇門答臘 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()
    {
        //蘇門答臘 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);
    }
}

//蘇門答臘 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()
    {
        //蘇門答臘 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

這個變通方法

• 需要安裝外部工具 (pdftotext)
• 寫入中間檔案
• 無法以程式化方式從特定頁面抽取
• 增加複雜性和故障點

IronPDF文本提取

IronPdf 提供本機文字萃取 API：

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

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

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

        //擷取文字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");

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

        //擷取文字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() 方法提供對 PDF 內容的直接程式化存取，而無需外部工具或中間檔案。

詳細能力比較

蘇門答臘 PDF的優勢

• 輕量且快速的 PDF 檢視器
• 開放原始碼且免費使用
• 簡單且友善的使用者介面
• 在舊版系統上表現優異
• 支援指令列印

蘇門答臘 PDF限制

• 僅適用於閱讀器-無 PDF 創建或編輯功能
• 獨立的應用程式-不是整合的函式庫 -GPL授權限制商業使用
• 需要外部流程管理
• 無程式化 API 可供操作
• 僅支援桌上型電腦-不支援網頁或雲端
• 使用者必須另外安裝
• 無文字萃取 API

IronPDF的優勢

• 全面的 PDF 建立與編輯
• 原生 .NET 函式庫整合
• 企業使用的商業授權
• 基於IronPDF的 HTML 渲染。
• 完整的程式化 API
• 跨平台支援（Windows、Linux、macOS）
• 網路應用程式支援
• 雲端部署相容
• 文字與影像擷取
• 安全性與數位簽章支援

IronPDF注意事項

• 商業授權模式
• 比簡單的檢視器更大的部署足跡