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使用IRONPDF

如何在 C# 中比较两个 PDF 文件

Curtis Chau
Curtis Chau
已发布:
Comparing PDF documents programmatically is essential for tracking changes, validating different versions, and automating quality assurance workflows. Whether you need to compare two PDF files for document management or find differences in contract revisions, IronPDF provides a streamlined solution for comparing PDF files in C#.

This tutorial demonstrates how to compare two PDF documents using IronPDF's text extraction capabilities, from basic comparisons to creating detailed difference reports. You'll learn practical techniques with code examples that work across Windows, Linux, macOS, Docker, and cloud platforms.

## Prerequisites and Setup

Before starting, ensure you have installed:

- Visual Studio 2019 or later
- .NET Framework 4.6.2+ or .NET Core 3.1+
- Basic C# knowledge

### Installing the IronPDF .NET Package

Install IronPDF via NuGet Package Manager in your .NET project:

```shell
:ProductInstall

或使用.NET CLI：

dotnet add package IronPdf
dotnet add package IronPdf
SHELL

将必要的命名空间引用添加到您的文件中：

using IronPdf;
using System;
using IronPdf;
using System;
Imports IronPdf
Imports System
$vbLabelText   $csharpLabel

基本 PDF 文档比较

让我们从示例代码开始，通过提取和比较文本内容来比较 PDF 文件：

public class BasicPdfComparer
{
    public static bool ComparePdfFiles(string firstPdfPath, string secondPdfPath)
    {
        // Load two PDF documents
        var pdf1 = PdfDocument.FromFile(firstPdfPath);
        var pdf2 = PdfDocument.FromFile(secondPdfPath);

        // Extract all text from both PDFs
        string text1 = pdf1.ExtractAllText();
        string text2 = pdf2.ExtractAllText();

        // Compare the two documents
        bool areIdentical = text1 == text2;

        // Find differences and calculate similarity
        double similarity = CalculateSimilarity(text1, text2);
        Console.WriteLine($"Documents are {(areIdentical ? "identical" : "different")}");
        Console.WriteLine($"Similarity: {similarity:F2}%");

        return areIdentical;
    }

    private static double CalculateSimilarity(string text1, string text2)
    {
        if (text1 == text2) return 100.0;
        if (string.IsNullOrEmpty(text1) || string.IsNullOrEmpty(text2)) return 0.0;

        int matchingChars = 0;
        int minLength = Math.Min(text1.Length, text2.Length);
        for (int i = 0; i < minLength; i++)
        {
            if (text1[i] == text2[i]) matchingChars++;
        }

        return (double)matchingChars / Math.Max(text1.Length, text2.Length) * 100;
    }
}
public class BasicPdfComparer
{
    public static bool ComparePdfFiles(string firstPdfPath, string secondPdfPath)
    {
        // Load two PDF documents
        var pdf1 = PdfDocument.FromFile(firstPdfPath);
        var pdf2 = PdfDocument.FromFile(secondPdfPath);

        // Extract all text from both PDFs
        string text1 = pdf1.ExtractAllText();
        string text2 = pdf2.ExtractAllText();

        // Compare the two documents
        bool areIdentical = text1 == text2;

        // Find differences and calculate similarity
        double similarity = CalculateSimilarity(text1, text2);
        Console.WriteLine($"Documents are {(areIdentical ? "identical" : "different")}");
        Console.WriteLine($"Similarity: {similarity:F2}%");

        return areIdentical;
    }

    private static double CalculateSimilarity(string text1, string text2)
    {
        if (text1 == text2) return 100.0;
        if (string.IsNullOrEmpty(text1) || string.IsNullOrEmpty(text2)) return 0.0;

        int matchingChars = 0;
        int minLength = Math.Min(text1.Length, text2.Length);
        for (int i = 0; i < minLength; i++)
        {
            if (text1[i] == text2[i]) matchingChars++;
        }

        return (double)matchingChars / Math.Max(text1.Length, text2.Length) * 100;
    }
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

此代码使用 IronPDF 的 PdfDocument.FromFile() 方法加载两个 PDF 文件，提取所有文本内容，并执行直接字符串比较。 比较方法为您提供指标，以确定文档匹配的程度。

逐页比较方法

如需更详细的分析，请逐页比较两个 PDF 以准确识别差异出现的位置：

public static void ComparePageByPage(string firstPdfPath, string secondPdfPath)
{
    // Load two files
    var pdf1 = PdfDocument.FromFile(firstPdfPath);
    var pdf2 = PdfDocument.FromFile(secondPdfPath);

    int maxPages = Math.Max(pdf1.PageCount, pdf2.PageCount);
    int differencesFound = 0;

    for (int i = 0; i < maxPages; i++)
    {
        // Process each page
        string page1Text = i < pdf1.PageCount ? pdf1.ExtractTextFromPage(i) : "";
        string page2Text = i < pdf2.PageCount ? pdf2.ExtractTextFromPage(i) : "";

        if (page1Text != page2Text)
        {
            differencesFound++;
            Console.WriteLine($"Page {i + 1}: Differences detected");
        }
        else
        {
            Console.WriteLine($"Page {i + 1}: Identical");
        }
    }
    Console.WriteLine($"\nSummary: {differencesFound} page(s) with changes");
}
public static void ComparePageByPage(string firstPdfPath, string secondPdfPath)
{
    // Load two files
    var pdf1 = PdfDocument.FromFile(firstPdfPath);
    var pdf2 = PdfDocument.FromFile(secondPdfPath);

    int maxPages = Math.Max(pdf1.PageCount, pdf2.PageCount);
    int differencesFound = 0;

    for (int i = 0; i < maxPages; i++)
    {
        // Process each page
        string page1Text = i < pdf1.PageCount ? pdf1.ExtractTextFromPage(i) : "";
        string page2Text = i < pdf2.PageCount ? pdf2.ExtractTextFromPage(i) : "";

        if (page1Text != page2Text)
        {
            differencesFound++;
            Console.WriteLine($"Page {i + 1}: Differences detected");
        }
        else
        {
            Console.WriteLine($"Page {i + 1}: Identical");
        }
    }
    Console.WriteLine($"\nSummary: {differencesFound} page(s) with changes");
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

ExtractTextFromPage() 方法允许从特定页面进行有针对性的提取。 这种方法帮助开发者找出不同版本 PDF 文档之间的差异。

使用 Comparer 类模式

创建专用的比较器类以增强您的比较功能：

public class PdfComparer
{
    private PdfDocument pdf1;
    private PdfDocument pdf2;
    private bool disposed;

    public PdfComparer(string file1Path, string file2Path)
    {
        // Load the two PDFs
        pdf1 = PdfDocument.FromFile(file1Path);
        pdf2 = PdfDocument.FromFile(file2Path);
    }

    public ComparisonResult Compare()
    {
        var result = new ComparisonResult();

        // Compare PDF documents
        string text1 = pdf1?.ExtractAllText() ?? string.Empty;
        string text2 = pdf2?.ExtractAllText() ?? string.Empty;

        result.AreIdentical = string.Equals(text1, text2, StringComparison.Ordinal);
        result.SimilarityPercent = CalculateSimilarity(text1, text2);
        result.Differences = FindDifferences(text1, text2);

        return result;
    }

    private List<string> FindDifferences(string text1, string text2)
    {
        var differences = new List<string>();

        // Normalise nulls
        text1 ??= string.Empty;
        text2 ??= string.Empty;

        if (string.Equals(text1, text2, StringComparison.Ordinal))
            return differences;

        // Page-aware comparisons aren't possible here because we only have full-text;
        // produce a concise, actionable difference entry:
        int min = Math.Min(text1.Length, text2.Length);
        int firstDiff = -1;
        for (int i = 0; i < min; i++)
        {
            if (text1[i] != text2[i])
            {
                firstDiff = i;
                break;
            }
        }

        if (firstDiff == -1 && text1.Length != text2.Length)
        {
            // No differing character in the overlap, but lengths differ
            firstDiff = min;
        }

        // Create short excerpts around the first difference for context
        int excerptLength = 200;
        string excerpt1 = string.Empty;
        string excerpt2 = string.Empty;

        if (firstDiff >= 0)
        {
            int start1 = Math.Max(0, firstDiff);
            int len1 = Math.Min(excerptLength, Math.Max(0, text1.Length - start1));
            excerpt1 = start1 < text1.Length ? text1.Substring(start1, len1) : string.Empty;

            int start2 = Math.Max(0, firstDiff);
            int len2 = Math.Min(excerptLength, Math.Max(0, text2.Length - start2));
            excerpt2 = start2 < text2.Length ? text2.Substring(start2, len2) : string.Empty;
        }

        // HTML-encode excerpts if they will be embedded into HTML reports
        string safeExcerpt1 = System.Net.WebUtility.HtmlEncode(excerpt1);
        string safeExcerpt2 = System.Net.WebUtility.HtmlEncode(excerpt2);
        double similarity = CalculateSimilarity(text1, text2);

        differences.Add($"Similarity: {similarity:F2}%. Lengths: [{text1.Length}, {text2.Length}]. First difference index: {firstDiff}. Excerpt1: \"{safeExcerpt1}\" Excerpt2: \"{safeExcerpt2}\"");

        return differences;
    }

    public void Close()
    {
        Dispose();
    }

    public void Dispose()
    {
        if (disposed) return;
        disposed = true;
        pdf1?.Dispose();
        pdf2?.Dispose();
    }
}

public class ComparisonResult
{
    // True when extracted text is exactly the same
    public bool AreIdentical { get; set; }

    // Similarity expressed as percent (0..100)
    public double SimilarityPercent { get; set; }

    // Human readable difference entries
    public List<string> Differences { get; set; } = new List<string>();
}
public class PdfComparer
{
    private PdfDocument pdf1;
    private PdfDocument pdf2;
    private bool disposed;

    public PdfComparer(string file1Path, string file2Path)
    {
        // Load the two PDFs
        pdf1 = PdfDocument.FromFile(file1Path);
        pdf2 = PdfDocument.FromFile(file2Path);
    }

    public ComparisonResult Compare()
    {
        var result = new ComparisonResult();

        // Compare PDF documents
        string text1 = pdf1?.ExtractAllText() ?? string.Empty;
        string text2 = pdf2?.ExtractAllText() ?? string.Empty;

        result.AreIdentical = string.Equals(text1, text2, StringComparison.Ordinal);
        result.SimilarityPercent = CalculateSimilarity(text1, text2);
        result.Differences = FindDifferences(text1, text2);

        return result;
    }

    private List<string> FindDifferences(string text1, string text2)
    {
        var differences = new List<string>();

        // Normalise nulls
        text1 ??= string.Empty;
        text2 ??= string.Empty;

        if (string.Equals(text1, text2, StringComparison.Ordinal))
            return differences;

        // Page-aware comparisons aren't possible here because we only have full-text;
        // produce a concise, actionable difference entry:
        int min = Math.Min(text1.Length, text2.Length);
        int firstDiff = -1;
        for (int i = 0; i < min; i++)
        {
            if (text1[i] != text2[i])
            {
                firstDiff = i;
                break;
            }
        }

        if (firstDiff == -1 && text1.Length != text2.Length)
        {
            // No differing character in the overlap, but lengths differ
            firstDiff = min;
        }

        // Create short excerpts around the first difference for context
        int excerptLength = 200;
        string excerpt1 = string.Empty;
        string excerpt2 = string.Empty;

        if (firstDiff >= 0)
        {
            int start1 = Math.Max(0, firstDiff);
            int len1 = Math.Min(excerptLength, Math.Max(0, text1.Length - start1));
            excerpt1 = start1 < text1.Length ? text1.Substring(start1, len1) : string.Empty;

            int start2 = Math.Max(0, firstDiff);
            int len2 = Math.Min(excerptLength, Math.Max(0, text2.Length - start2));
            excerpt2 = start2 < text2.Length ? text2.Substring(start2, len2) : string.Empty;
        }

        // HTML-encode excerpts if they will be embedded into HTML reports
        string safeExcerpt1 = System.Net.WebUtility.HtmlEncode(excerpt1);
        string safeExcerpt2 = System.Net.WebUtility.HtmlEncode(excerpt2);
        double similarity = CalculateSimilarity(text1, text2);

        differences.Add($"Similarity: {similarity:F2}%. Lengths: [{text1.Length}, {text2.Length}]. First difference index: {firstDiff}. Excerpt1: \"{safeExcerpt1}\" Excerpt2: \"{safeExcerpt2}\"");

        return differences;
    }

    public void Close()
    {
        Dispose();
    }

    public void Dispose()
    {
        if (disposed) return;
        disposed = true;
        pdf1?.Dispose();
        pdf2?.Dispose();
    }
}

public class ComparisonResult
{
    // True when extracted text is exactly the same
    public bool AreIdentical { get; set; }

    // Similarity expressed as percent (0..100)
    public double SimilarityPercent { get; set; }

    // Human readable difference entries
    public List<string> Differences { get; set; } = new List<string>();
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

此类结构提供了一种清晰的方式来比较 PDF 文档，同时正确管理文档对象和引用。

创建视觉比较报告

生成一个基于 HTML 的报告，突出显示两个文档之间的差异并将其保存为 PDF 文件：

public static void CreateComparisonReport(string pdf1Path, string pdf2Path, string outputPath)
{
    // Load PDFs for comparison
    var pdf1 = PdfDocument.FromFile(pdf1Path);
    var pdf2 = PdfDocument.FromFile(pdf2Path);

    // Build HTML report with details
    string htmlReport = @"
        <html>
        <head>
            <style>
                body { font-family: Arial, sans-serif; margin: 20px; }
                .identical { color: green; }
                .different { color: red; }
                table { width: 100%; border-collapse: collapse; }
                th, td { border: 1px solid #ddd; padding: 8px; }
            </style>
        </head>
        <body>
            <h1>PDF Comparison Report</h1>
            <table>
                <tr><th>Page</th><th>Status</th></tr>";

    // Process each page
    for (int i = 0; i < Math.Max(pdf1.PageCount, pdf2.PageCount); i++)
    {
        string page1 = i < pdf1.PageCount ? pdf1.ExtractTextFromPage(i) : "";
        string page2 = i < pdf2.PageCount ? pdf2.ExtractTextFromPage(i) : "";

        bool identical = page1 == page2;
        string status = identical ? "Identical" : "Different";
        htmlReport += $"<tr><td>Page {i + 1}</td><td class='{status.ToLower()}'>{status}</td></tr>";
    }

    htmlReport += "</table></body></html>";

    // Create and save the report
    var renderer = new ChromePdfRenderer();
    var reportPdf = renderer.RenderHtmlAsPdf(htmlReport);
    reportPdf.SaveAs(outputPath);
    Console.WriteLine($"Report saved to: {outputPath}");
}
public static void CreateComparisonReport(string pdf1Path, string pdf2Path, string outputPath)
{
    // Load PDFs for comparison
    var pdf1 = PdfDocument.FromFile(pdf1Path);
    var pdf2 = PdfDocument.FromFile(pdf2Path);

    // Build HTML report with details
    string htmlReport = @"
        <html>
        <head>
            <style>
                body { font-family: Arial, sans-serif; margin: 20px; }
                .identical { color: green; }
                .different { color: red; }
                table { width: 100%; border-collapse: collapse; }
                th, td { border: 1px solid #ddd; padding: 8px; }
            </style>
        </head>
        <body>
            <h1>PDF Comparison Report</h1>
            <table>
                <tr><th>Page</th><th>Status</th></tr>";

    // Process each page
    for (int i = 0; i < Math.Max(pdf1.PageCount, pdf2.PageCount); i++)
    {
        string page1 = i < pdf1.PageCount ? pdf1.ExtractTextFromPage(i) : "";
        string page2 = i < pdf2.PageCount ? pdf2.ExtractTextFromPage(i) : "";

        bool identical = page1 == page2;
        string status = identical ? "Identical" : "Different";
        htmlReport += $"<tr><td>Page {i + 1}</td><td class='{status.ToLower()}'>{status}</td></tr>";
    }

    htmlReport += "</table></body></html>";

    // Create and save the report
    var renderer = new ChromePdfRenderer();
    var reportPdf = renderer.RenderHtmlAsPdf(htmlReport);
    reportPdf.SaveAs(outputPath);
    Console.WriteLine($"Report saved to: {outputPath}");
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

此代码演示了如何创建一个包含比较结果的专业 PDF 文档。 报告保存到指定路径。

比较多个 PDF 文档

当您需要同时比较多个 PDF 文档时，使用此方法：

public static void CompareMultiplePdfs(params string[] pdfPaths)
{
    if (pdfPaths.Length < 2)
    {
        Console.WriteLine("Need at least two files to compare");
        return;
    }

    // Load multiple PDF documents
    var pdfs = new List<PdfDocument>();
    foreach (var path in pdfPaths)
    {
        pdfs.Add(PdfDocument.FromFile(path));
    }

    // Compare all documents
    for (int i = 0; i < pdfs.Count - 1; i++)
    {
        for (int j = i + 1; j < pdfs.Count; j++)
        {
            string text1 = pdfs[i].ExtractAllText();
            string text2 = pdfs[j].ExtractAllText();
            bool identical = text1 == text2;
            Console.WriteLine($"File {i + 1} vs File {j + 1}: {(identical ? "Identical" : "Different")}");
        }
    }

    // Close all documents
    pdfs.ForEach(pdf => pdf.Dispose());
}
public static void CompareMultiplePdfs(params string[] pdfPaths)
{
    if (pdfPaths.Length < 2)
    {
        Console.WriteLine("Need at least two files to compare");
        return;
    }

    // Load multiple PDF documents
    var pdfs = new List<PdfDocument>();
    foreach (var path in pdfPaths)
    {
        pdfs.Add(PdfDocument.FromFile(path));
    }

    // Compare all documents
    for (int i = 0; i < pdfs.Count - 1; i++)
    {
        for (int j = i + 1; j < pdfs.Count; j++)
        {
            string text1 = pdfs[i].ExtractAllText();
            string text2 = pdfs[j].ExtractAllText();
            bool identical = text1 == text2;
            Console.WriteLine($"File {i + 1} vs File {j + 1}: {(identical ? "Identical" : "Different")}");
        }
    }

    // Close all documents
    pdfs.ForEach(pdf => pdf.Dispose());
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

这种方法允许在单次运行中比较多个 PDF 文档，适用于批量处理要求。

现实世界合同版本控制

这是一个用于跟踪法律文件修订的实用示例：

public class ContractVersionControl
{
    public static void CompareContractVersions(string originalPath, string revisedPath)
    {
        // System for comparing contract versions
        Console.WriteLine("Contract Version Comparison System");

        var original = PdfDocument.FromFile(originalPath);
        var revised = PdfDocument.FromFile(revisedPath);

        // Extract contract contents
        string originalText = original.ExtractAllText();
        string revisedText = revised.ExtractAllText();

        if (originalText == revisedText)
        {
            Console.WriteLine("No changes detected");
        }
        else
        {
            Console.WriteLine("Changes detected in revised version");

            // Create detailed report
            string reportPath = $"contract_comparison_{DateTime.Now:yyyyMMdd}.pdf";
            CreateComparisonReport(originalPath, revisedPath, reportPath);
            Console.WriteLine($"Report created: {reportPath}");
        }

        // Close documents
        original.Dispose();
        revised.Dispose();
    }
}
public class ContractVersionControl
{
    public static void CompareContractVersions(string originalPath, string revisedPath)
    {
        // System for comparing contract versions
        Console.WriteLine("Contract Version Comparison System");

        var original = PdfDocument.FromFile(originalPath);
        var revised = PdfDocument.FromFile(revisedPath);

        // Extract contract contents
        string originalText = original.ExtractAllText();
        string revisedText = revised.ExtractAllText();

        if (originalText == revisedText)
        {
            Console.WriteLine("No changes detected");
        }
        else
        {
            Console.WriteLine("Changes detected in revised version");

            // Create detailed report
            string reportPath = $"contract_comparison_{DateTime.Now:yyyyMMdd}.pdf";
            CreateComparisonReport(originalPath, revisedPath, reportPath);
            Console.WriteLine($"Report created: {reportPath}");
        }

        // Close documents
        original.Dispose();
        revised.Dispose();
    }
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

这演示了如何比较两个 PDF 合同版本并生成审核报告。 系统会自动检测更改并创建文档。

处理受密码保护的 PDFs

IronPDF 无缝处理加密 PDF 文件，通过在调用加载方法时传递密码：

public static bool CompareProtectedPdfs(string pdf1Path, string pass1, 
                                        string pdf2Path, string pass2)
{
    // Load password-protected two PDFs
    var pdf1 = PdfDocument.FromFile(pdf1Path, pass1);
    var pdf2 = PdfDocument.FromFile(pdf2Path, pass2);

    // Extract and compare text
    string text1 = pdf1.ExtractAllText();
    string text2 = pdf2.ExtractAllText();

    bool result = text1 == text2;

    // Close and dispose
    pdf1.Dispose();
    pdf2.Dispose();

    return result;
}
public static bool CompareProtectedPdfs(string pdf1Path, string pass1, 
                                        string pdf2Path, string pass2)
{
    // Load password-protected two PDFs
    var pdf1 = PdfDocument.FromFile(pdf1Path, pass1);
    var pdf2 = PdfDocument.FromFile(pdf2Path, pass2);

    // Extract and compare text
    string text1 = pdf1.ExtractAllText();
    string text2 = pdf2.ExtractAllText();

    bool result = text1 == text2;

    // Close and dispose
    pdf1.Dispose();
    pdf2.Dispose();

    return result;
}
IRON VB CONVERTER ERROR developers@ironsoftware.com
$vbLabelText   $csharpLabel

在加载受保护的 PDF 时，只需传递密码参数。 IronPDF 自动处理解密。

逐步说明

遵循以下步骤在您的 .NET 项目中实现 PDF 比较：

  1. 通过 NuGet 安装 IronPDF .NET 包。
  2. 添加 IronPDF 命名空间引用。
  3. 为每个文件创建一个 PdfDocument 实例。
  4. 使用类似 ExtractAllText() 的方法获取内容。
  5. 比较提取的文本或实现自定义逻辑。
  6. 根据需要保存结果或生成报告。
  7. 关闭文档对象以释放资源。

设置您的许可证

若要使用无水印的 IronPDF，请设置您的许可证密钥：

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"
$vbLabelText   $csharpLabel

访问许可页面并使用专业级比较功能设置 PDF 文件。

最佳实践

  1. 如果处理带有跟踪更改的文档，则在比较前接受所有修订。
  2. 为关键文件操作开发错误处理。
  3. 通过为大型文档创建特定页面比较来提高性能。
  4. 为多个 PDF 文档异步运行比较。
  5. 定期更新您的库以获得最新功能和支持。

结论

IronPDF 简化了使用 C# 比较两个 PDF 文件的过程，其直观的 API 和强大的提取功能。 从基本比较到创建详细报告，IronPDF 提供了强大的文档比较工作流所需的所有工具。

易于安装、功能全面、跨平台支持的结合，使 IronPDF 成为开发人员在 .NET 应用程序中实现 PDF 比较的理想选择。 无论您是在开发文档管理系统还是版本控制解决方案，IronPDF 的简单方法都能让您快速上手。

立即开始 IronPDF 免费试用，实现专业的 PDF 比较功能。 有了全面的技术支持和广泛的文档，您将在数小时内获得生产就绪的功能。 请参考完整文档以了解更多高级功能。

常见问题解答

什么是 IronPDF 及其如何帮助比较 PDF 文件？

IronPDF 是一个 .NET 库，提供与 PDF 文件一起使用的工具，包括以编程方式比较两个 PDF 文档以发现内容或结构上的差异的功能。

IronPDF 可以突出显示两个 PDF 文件之间的差异吗？

是的，IronPDF 可以通过比较内容并提供更改或差异的详细报告来突出显示两个 PDF 文件之间的差异。

我需要高级 C# 技能来使用 IronPDF 比较 PDFs 吗？

不，您不需要高级 C# 技能。IronPDF 提供简单直观的方法来比较 PDF 文件，对于不同技能水平的开发人员都很易用。

IronPDF 能比较加密的 PDF 文件吗？

是的，只要提供正确的密码以访问文档内容，IronPDF 支持比较加密的 PDF 文件。

IronPDF 可以检测到两个 PDFs 之间的哪些类型的差异？

IronPDF 可以检测一系列差异，包括文本更改、图像修改以及结构性变化如布局或格式的改变。

IronPDF 可以集成到现有的 C# 应用程序中吗？

是的，IronPDF 可以轻松集成到现有的 C# 应用程序中，允许开发人员在不对代码库进行重大更改的情况下添加 PDF 比较功能。

IronPDF 与其他 .NET 应用程序兼容吗？

IronPDF 旨在与所有 .NET 应用程序兼容，为在 .NET 框架内工作的开发人员提供无缝体验。

IronPDF 支持多个 PDF 文件的批量比较吗？

是的，IronPDF 支持批量处理，允许开发人员在单次操作中比较多个 PDF 文件，这对处理大量文档很有用。

IronPDF 如何确保 PDF 比较的准确性？

IronPDF 使用先进的算法确保准确和可靠的比较，分析文本和视觉元素以识别任何差异。

开始在 C# 中使用 IronPDF 进行 PDF 比较的第一步是什么？

第一步是通过 NuGet 包管理器在您的 C# 开发环境中安装 IronPDF 库，该库提供所有开始比较 PDFs 所需的工具。

Curtis Chau
Curtis Chau
  立即与工程团队聊天
技术作家

Curtis Chau 拥有卡尔顿大学的计算机科学学士学位，专注于前端开发，精通 Node.js、TypeScript、JavaScript 和 React。他热衷于打造直观且美观的用户界面，喜欢使用现代框架并创建结构良好、视觉吸引力强的手册。

除了开发之外，Curtis 对物联网 (IoT) 有浓厚的兴趣，探索将硬件和软件集成的新方法。在空闲时间，他喜欢玩游戏和构建 Discord 机器人，将他对技术的热爱与创造力相结合。

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