C# PDF Kütüphanesi

Explore IronPDF Ücretsiz Denemeye Başlayın

HTML'den PDF'e

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

PM >Install-Package IronPdf

Install-Package IronPdf

VIDEOLAR

PDF'de Özel Kenar Boşluklarını Ayarlama

Curtis Chau

Updated: 19 Temmuz 2026

Foxit PDF SDK'dan IronPDF'ye geçiş, karmaşık kurumsal odaklı API'leri modern, geliştirici dostu modellerle değiştirerek .NET PDF oluşturma iş akışınızı basitleştirir. Bu kılavuz, gereksiz kodları ortadan kaldıran ve kod tabanınız genelinde PDF işlemlerini kolaylaştıran eksiksiz, adım adım bir geçiş yolu sağlar.

Foxit PDF SDK'dan IronPDF'ye Neden Geçilmeli?

Foxit PDF Zorlukları

Foxit PDF SDK güçlü bir kurumsal düzeyde kütüphanedir, ancak gelişimi yavaşlatabilecek önemli karmaşıklıklarla birlikte gelir:

Karmaşık Lisans Sistemi: Birden fazla ürün, SKU ve lisans türü (geliştirici başına, sunucu başına, OEM vb.) projeniz için doğru seçeneği seçmeyi zorlaştırır.
Kurumsal Fiyatlandırma: Fiyatlandırma büyük organizasyonlar için özelleştirilmiş olup, daha küçük ekipler veya bireysel geliştiriciler için engelleyici olabilir.
Ağır Yerel Paket: Genel NuGet paketi (Foxit.SDK.Dotnet) büyüktür (~240 MB) ve daha eski projeler hala doğrudan DLL referansları veya özel besleme yapılandırmaları içerebilir.
Ayrıntılı API: Library.Initialize() ile kütüphane başlatma, hata kodu kontrolü ve açık Library.Release() çağrıları her işlem için standart ekler.
Ayrı HTML2PDF Motoru: HTML'den PDF'ye dönüştürme, NuGet paketine dahil edilmek yerine Foxit destek/komisyonları tarafından ayrı olarak dağıtılan HTML2PDF motoru ikili dosyalarını gerektirir.
Kompleks Yapılandırma: Ayarlar, birden fazla özellik ile ayrıntılı nesne yapılandırması (örneğin, HTML2PDFSettingData) gerektirir.
C++ Mirası: API desenleri, modern C# uygulamalarında daha az doğal hissettiren C++ kökenlerini yansıtır.

Foxit PDF ve IronPDF Karşılaştırması

Aspekt	Foxit PDF SDK	IronPDF
Kurulum	`Foxit.SDK.Dotnet` (~240 MB) + ayrı HTML2PDF motoru	Basit NuGet paketi
Lisanslama	Satış odaklı, geliştirici başına platform başına	Şeffaf, her boyuttaki için uygundur
Başlatma	`Library.Initialize(sn, key)`	Lisans anahtarını bir kez ayarla
Hata Yönetimi	ErrorCode enumları	Standart .NET istisnaları
HTML'den PDF'ye	Ayrı motor indirimi	Yerleşik Krom motor
API Tarzı	C++ kökenli, uzun	Modern .NET modelleri
Kaynak Temizliği	Manuel `Release()`	IDisposable/otomatik
Dokümantasyon	Kurumsal belgeler portalı	Halka açık eğitimler

Masraf ve Faydalar Analizi

Foxit PDF'den IronPDF'ye geçiş, somut geliştirme avantajları sağlar: daha basit API'ler ile karmaşıklık azaltılması, sezgisel yöntemlerle daha hızlı geliştirme, async/await ve LINQ desteği dahil modern .NET uyumluluğu, mevcut web yeteneklerini kullanan HTML öncelikli yaklaşımı ve ayrı motor indirilmesine gerek kalmadan HTML dönüştürme içerir. IronPDF, mevcut .NET sürümlerinde çalışır ve modern C# modelleriyle uyumlu şekilde çalışır.

Başlamadan Önce

Ön Koşullar

.NET Ortamı: IronPDF, .NET Framework 4.6.2+, .NET Core 3.1+, .NET 5/6/7/8/9+ sürümlerini destekler
NuGet Erişimi: NuGet'ten paket kurabileceğinizden emin olun
Lisans Anahtarı: Üretim kullanımı için IronPDF lisans anahtarınızı ironpdf.com adresinden edinin

Projenizi Yedekleyin

# Create a backup branch
git checkout -b pre-ironpdf-migration
git add .
git commit -m "Backup beforeFoxit PDF SDKto IronPDF migration"

# Create a backup branch
git checkout -b pre-ironpdf-migration
git add .
git commit -m "Backup beforeFoxit PDF SDKto IronPDF migration"

SHELL

Tüm Foxit PDF Kullanımlarını Tanımlayın

# Find allFoxit PDF SDKreferences
grep -r "foxit\|PDFDoc\|PDFPage\|Library.Initialize\|Library.Release" --include="*.cs" --include="*.csproj" .

# Find Foxit DLL references
find . -name "*.csproj" | xargs grep -l "Foxit\|fsdk"

# Find allFoxit PDF SDKreferences
grep -r "foxit\|PDFDoc\|PDFPage\|Library.Initialize\|Library.Release" --include="*.cs" --include="*.csproj" .

# Find Foxit DLL references
find . -name "*.csproj" | xargs grep -l "Foxit\|fsdk"

SHELL

Mevcut İşlevselliği Belgeleyin

Geçişten önce kataloglayın:

Hangi Foxit PDF özelliklerini kullandığınız (HTML dönüştürme, anotasyonlar, formlar, güvenlik)
Lisans anahtarının yerleri ve başlatma kodu
Özelleştirilmiş yapılandırmalar ve ayarlar
Hata işleme desenleri ErrorCode numaralarını kullanır

Hızlı Başlangıç Göçü

1. Adım: NuGet Paketlerini Güncelleyin

# Remove the Foxit NuGet package
dotnet remove package Foxit.SDK.Dotnet

# Install IronPDF
dotnet add package IronPdf

# Remove the Foxit NuGet package
dotnet remove package Foxit.SDK.Dotnet

# Install IronPDF
dotnet add package IronPdf

SHELL

Eski doğrudan Foxit DLL referanslarına .csproj'da sahip olanlar için (eski yapılar), bunları manuel olarak kaldırın:

<!-- Remove these manually -->
<Reference Include="fsdk_dotnet">
    <HintPath>..\libs\Foxit\fsdk_dotnet.dll</HintPath>
</Reference>

<!-- Remove these manually -->
<Reference Include="fsdk_dotnet">
    <HintPath>..\libs\Foxit\fsdk_dotnet.dll</HintPath>
</Reference>

XML

Ayrıca ayrı olarak paketlenmiş HTML2PDF motor klasörlerini de çıkarın.

Adım 2: Ad Alanlarını Güncelleyin

// Before (Foxit PDF)
using foxit;
using foxit.common;
using foxit.common.fxcrt;
using foxit.pdf;
using foxit.pdf.annots;
using foxit.addon.conversion;

// After (IronPDF)
using IronPdf;
using IronPdf.Rendering;
using IronPdf.Editing;

// Before (Foxit PDF)
using foxit;
using foxit.common;
using foxit.common.fxcrt;
using foxit.pdf;
using foxit.pdf.annots;
using foxit.addon.conversion;

// After (IronPDF)
using IronPdf;
using IronPdf.Rendering;
using IronPdf.Editing;

Imports IronPdf
Imports IronPdf.Rendering
Imports IronPdf.Editing

Imports IronPdf
Imports IronPdf.Rendering
Imports IronPdf.Editing

Adım 3: IronPDF'yi Başlatın

Foxit PDF geçişinde en önemli gelişmelerden biri, karmaşık başlatma ve temizleme deseninin ortadan kaldırılmasıdır:

// Before (Foxit PDF)
string sn = "YOUR_SERIAL_NUMBER";
string key = "YOUR_LICENSE_KEY";
ErrorCode error_code = Library.Initialize(sn, key);
if (error_code != ErrorCode.e_ErrSuccess)
{
    throw new Exception("Failed to initialize Foxit PDF SDK");
}
// ... your code ...
Library.Release();  // Don't forget this!

// After (IronPDF)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";
// That's it! No Release() needed

// Before (Foxit PDF)
string sn = "YOUR_SERIAL_NUMBER";
string key = "YOUR_LICENSE_KEY";
ErrorCode error_code = Library.Initialize(sn, key);
if (error_code != ErrorCode.e_ErrSuccess)
{
    throw new Exception("Failed to initialize Foxit PDF SDK");
}
// ... your code ...
Library.Release();  // Don't forget this!

// After (IronPDF)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";
// That's it! No Release() needed

Imports System

' Before (Foxit PDF)
Dim sn As String = "YOUR_SERIAL_NUMBER"
Dim key As String = "YOUR_LICENSE_KEY"
Dim error_code As ErrorCode = Library.Initialize(sn, key)
If error_code <> ErrorCode.e_ErrSuccess Then
    Throw New Exception("Failed to initialize Foxit PDF SDK")
End If
' ... your code ...
Library.Release()  ' Don't forget this!

' After (IronPDF)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"
' That's it! No Release() needed

Imports System

' Before (Foxit PDF)
Dim sn As String = "YOUR_SERIAL_NUMBER"
Dim key As String = "YOUR_LICENSE_KEY"
Dim error_code As ErrorCode = Library.Initialize(sn, key)
If error_code <> ErrorCode.e_ErrSuccess Then
    Throw New Exception("Failed to initialize Foxit PDF SDK")
End If
' ... your code ...
Library.Release()  ' Don't forget this!

' After (IronPDF)
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"
' That's it! No Release() needed

Adım 4: Temel Dönüştürme Deseni

// Before (Foxit PDF)
Library.Initialize(sn, key);
HTML2PDFSettingData settings = new HTML2PDFSettingData();
settings.page_width = 612.0f;
settings.page_height = 792.0f;
Convert.FromHTML(htmlContent, @"C:\Foxit\html2pdf_engine", "",
                 settings, "output.pdf", 30);
Library.Release();

// After (IronPDF)
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(htmlContent);
pdf.SaveAs("output.pdf");

// Before (Foxit PDF)
Library.Initialize(sn, key);
HTML2PDFSettingData settings = new HTML2PDFSettingData();
settings.page_width = 612.0f;
settings.page_height = 792.0f;
Convert.FromHTML(htmlContent, @"C:\Foxit\html2pdf_engine", "",
                 settings, "output.pdf", 30);
Library.Release();

// After (IronPDF)
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(htmlContent);
pdf.SaveAs("output.pdf");

' Before (Foxit PDF)
Library.Initialize(sn, key)
Dim settings As New HTML2PDFSettingData()
settings.page_width = 612.0F
settings.page_height = 792.0F
Convert.FromHTML(htmlContent, "C:\Foxit\html2pdf_engine", "", settings, "output.pdf", 30)
Library.Release()

' After (IronPDF)
Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
pdf.SaveAs("output.pdf")

' Before (Foxit PDF)
Library.Initialize(sn, key)
Dim settings As New HTML2PDFSettingData()
settings.page_width = 612.0F
settings.page_height = 792.0F
Convert.FromHTML(htmlContent, "C:\Foxit\html2pdf_engine", "", settings, "output.pdf", 30)
Library.Release()

' After (IronPDF)
Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
pdf.SaveAs("output.pdf")

Tam API Referansı

Namespace Haritalama

Foxit PDF Namespace	IronPDF Eşdeğeri
`foxit`	`IronPdf`
`foxit.common`	`IronPdf`
`foxit.common.fxcrt`	Yok
`foxit.pdf`	`IronPdf`
`foxit.pdf.annots`	`IronPdf.Editing`
`foxit.addon.conversion`	`IronPdf.Rendering`

Temel Sınıf Eşlemeleri

Foxit PDF SDK Sınıfı	IronPDF Eşdeğeri
`Library`	Yok
`PDFDoc`	`PdfDocument`
`PDFPage`	`PdfDocument.Pages[i]`
`HTML2PDF`	`ChromePdfRenderer`
`TextPage`	`pdf.ExtractTextFromPage(i)`
`Watermark`	`TextStamper` / `ImageStamper`
`Security`	`SecuritySettings`
`Form`	`pdf.Form`
`Metadata`	`pdf.MetaData`

PDFDoc Yöntemleri

Foxit PDFDoc	IronPDF PdfDocument
`new PDFDoc(path)`	`PdfDocument.FromFile(path)`
`doc.LoadW(password)`	`PdfDocument.FromFile(path, password)`
`doc.GetPageCount()`	`pdf.PageCount`
`doc.GetPage(index)`	`pdf.Pages[index]`
`doc.SaveAs(path, flags)`	`pdf.SaveAs(path)`
`doc.Close()`	`pdf.Dispose()` veya using ifadesi
`doc.InsertDocument()`	`PdfDocument.Merge()`

HTML2PDF / Dönüştürme

Foxit HTML2PDF	IronPDF Eşdeğeri
`new HTML2PDFSettingData()`	`new ChromePdfRenderer()`
`settings.page_width`	`RenderingOptions.PaperSize`
`settings.page_height`	`RenderingOptions.SetCustomPaperSize()`
`Convert.FromHTML(html, engine, ...)`	`renderer.RenderHtmlAsPdf(html)`
`Convert.FromHTML(url, engine, ...)`	`renderer.RenderUrlAsPdf(url)`

Filigran Ayarları

Foxit Filigran	IronPDF Eşdeğeri
`new Watermark(doc, text, font, size, color)`	`new TextStamper()`
`WatermarkSettings.position`	`VerticalAlignment` + `HorizontalAlignment`
`WatermarkSettings.rotation`	`Rotation`
`WatermarkSettings.opacity`	`Opacity`
`watermark.InsertToAllPages()`	`pdf.ApplyStamp(stamper)`

Kod Örnekleri

Örnek 1: HTML'den PDF'ye Dönüştürme

Before (Foxit PDF SDK):

// NuGet: Install-Package Foxit.SDK.Dotnet
// HTML-to-PDF requires the separateFoxit HTML2PDFengine (engine_path),
// obtained from Foxit support/sales — not in the NuGet package.
using foxit;
using foxit.common;
using foxit.addon.conversion;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        HTML2PDFSettingData settingData = new HTML2PDFSettingData();
        settingData.page_width = 612.0f;
        settingData.page_height = 792.0f;
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage;

        Convert.FromHTML(
            "<html><body><h1>Hello World</h1></body></html>",
            @"C:\Foxit\html2pdf_engine",   // engine_path (separate download)
            "",                              // cookies path
            settingData,
            "output.pdf",
            30);                             // timeout (seconds)

        Library.Release();
    }
}

// NuGet: Install-Package Foxit.SDK.Dotnet
// HTML-to-PDF requires the separateFoxit HTML2PDFengine (engine_path),
// obtained from Foxit support/sales — not in the NuGet package.
using foxit;
using foxit.common;
using foxit.addon.conversion;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        HTML2PDFSettingData settingData = new HTML2PDFSettingData();
        settingData.page_width = 612.0f;
        settingData.page_height = 792.0f;
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage;

        Convert.FromHTML(
            "<html><body><h1>Hello World</h1></body></html>",
            @"C:\Foxit\html2pdf_engine",   // engine_path (separate download)
            "",                              // cookies path
            settingData,
            "output.pdf",
            30);                             // timeout (seconds)

        Library.Release();
    }
}

Sonrası (IronPDF):

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

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<html><body><h1>Hello World</h1></body></html>");
        pdf.SaveAs("output.pdf");
    }
}

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

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<html><body><h1>Hello World</h1></body></html>");
        pdf.SaveAs("output.pdf");
    }
}

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf("<html><body><h1>Hello World</h1></body></html>")
        pdf.SaveAs("output.pdf")
    End Sub
End Class

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf("<html><body><h1>Hello World</h1></body></html>")
        pdf.SaveAs("output.pdf")
    End Sub
End Class

IronPDF yaklaşımı, 15+ satırlık yapılandırma kodunu sadece 4 satıra indirir. Kütüphane başlatma yok, açık temizlik yok, karmaşık ayar nesneleri yok. Daha fazla HTML renderleme seçeneği için, HTML'den PDF'ye dokümantasyona bakın.

Örnek 2: URL'den PDF'ye Dönüştürme

Before (Foxit PDF SDK):

// NuGet: Install-Package Foxit.SDK.Dotnet
// Convert.FromHTML accepts either a URL or a literal HTML string in the
// first argument; the URL form is what does URL-to-PDF.
using foxit;
using foxit.common;
using foxit.addon.conversion;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        HTML2PDFSettingData settingData = new HTML2PDFSettingData();
        settingData.page_width = 612.0f;
        settingData.page_height = 792.0f;
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage;

        Convert.FromHTML(
            "https://www.example.com",
            @"C:\Foxit\html2pdf_engine",   // engine_path (separate download)
            "",                              // cookies path
            settingData,
            "output.pdf",
            30);                             // timeout (seconds)

        Library.Release();
    }
}

// NuGet: Install-Package Foxit.SDK.Dotnet
// Convert.FromHTML accepts either a URL or a literal HTML string in the
// first argument; the URL form is what does URL-to-PDF.
using foxit;
using foxit.common;
using foxit.addon.conversion;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        HTML2PDFSettingData settingData = new HTML2PDFSettingData();
        settingData.page_width = 612.0f;
        settingData.page_height = 792.0f;
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage;

        Convert.FromHTML(
            "https://www.example.com",
            @"C:\Foxit\html2pdf_engine",   // engine_path (separate download)
            "",                              // cookies path
            settingData,
            "output.pdf",
            30);                             // timeout (seconds)

        Library.Release();
    }
}

Imports foxit
Imports foxit.common
Imports foxit.addon.conversion
Imports System

Module Program
    Sub Main()
        Library.Initialize("sn", "key")

        Dim settingData As New HTML2PDFSettingData()
        settingData.page_width = 612.0F
        settingData.page_height = 792.0F
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage

        Convert.FromHTML(
            "https://www.example.com",
            "C:\Foxit\html2pdf_engine",   ' engine_path (separate download)
            "",                           ' cookies path
            settingData,
            "output.pdf",
            30)                          ' timeout (seconds)

        Library.Release()
    End Sub
End Module

Imports foxit
Imports foxit.common
Imports foxit.addon.conversion
Imports System

Module Program
    Sub Main()
        Library.Initialize("sn", "key")

        Dim settingData As New HTML2PDFSettingData()
        settingData.page_width = 612.0F
        settingData.page_height = 792.0F
        settingData.page_mode = HTML2PDFPageMode.e_HTML2PDFPageModeSinglePage

        Convert.FromHTML(
            "https://www.example.com",
            "C:\Foxit\html2pdf_engine",   ' engine_path (separate download)
            "",                           ' cookies path
            settingData,
            "output.pdf",
            30)                          ' timeout (seconds)

        Library.Release()
    End Sub
End Module

Sonrası (IronPDF):

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

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("output.pdf");
    }
}

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

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("output.pdf");
    }
}

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderUrlAsPdf("https://www.example.com")
        pdf.SaveAs("output.pdf")
    End Sub
End Class

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderUrlAsPdf("https://www.example.com")
        pdf.SaveAs("output.pdf")
    End Sub
End Class

IronPDF'nin yerleşik Chromium motoru, JavaScript yürütme, CSS renderleme ve dinamik içerikleri otomatik olarak ele alır. URL'den PDF'e dönüştürme hakkında daha fazla bilgi edinin.

Örnek 3: Filigran Ekleme

Before (Foxit PDF SDK):

// NuGet: Install-Package Foxit.SDK.Dotnet
using foxit;
using foxit.common;
using foxit.pdf;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            doc.Load("");

            WatermarkSettings settings = new WatermarkSettings();
            settings.flags = (int)Watermark.Flags.e_FlagASPageContents;
            settings.position = Position.e_PosCenter;
            settings.rotation = -45.0f;
            settings.opacity = 50;     // 0-100 in newer SDKs

            WatermarkTextProperties props = new WatermarkTextProperties();
            props.font = new Font(Font.StandardID.e_StdIDHelvetica);
            props.font_size = 48.0f;
            props.color = 0xFF0000;
            props.alignment = Alignment.e_AlignmentCenter;

            Watermark watermark = new Watermark(doc, "Confidential", props, settings);

            // No InsertToAllPages helper — iterate pages explicitly.
            for (int i = 0; i < doc.GetPageCount(); i++)
            {
                using (PDFPage page = doc.GetPage(i))
                {
                    watermark.InsertToPage(page);
                }
            }

            doc.SaveAs("output.pdf", (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
        }

        Library.Release();
    }
}

// NuGet: Install-Package Foxit.SDK.Dotnet
using foxit;
using foxit.common;
using foxit.pdf;
using System;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        using (PDFDoc doc = new PDFDoc("input.pdf"))
        {
            doc.Load("");

            WatermarkSettings settings = new WatermarkSettings();
            settings.flags = (int)Watermark.Flags.e_FlagASPageContents;
            settings.position = Position.e_PosCenter;
            settings.rotation = -45.0f;
            settings.opacity = 50;     // 0-100 in newer SDKs

            WatermarkTextProperties props = new WatermarkTextProperties();
            props.font = new Font(Font.StandardID.e_StdIDHelvetica);
            props.font_size = 48.0f;
            props.color = 0xFF0000;
            props.alignment = Alignment.e_AlignmentCenter;

            Watermark watermark = new Watermark(doc, "Confidential", props, settings);

            // No InsertToAllPages helper — iterate pages explicitly.
            for (int i = 0; i < doc.GetPageCount(); i++)
            {
                using (PDFPage page = doc.GetPage(i))
                {
                    watermark.InsertToPage(page);
                }
            }

            doc.SaveAs("output.pdf", (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
        }

        Library.Release();
    }
}

Imports foxit
Imports foxit.common
Imports foxit.pdf
Imports System

Module Program
    Sub Main()
        Library.Initialize("sn", "key")

        Using doc As New PDFDoc("input.pdf")
            doc.Load("")

            Dim settings As New WatermarkSettings()
            settings.flags = CInt(Watermark.Flags.e_FlagASPageContents)
            settings.position = Position.e_PosCenter
            settings.rotation = -45.0F
            settings.opacity = 50 ' 0-100 in newer SDKs

            Dim props As New WatermarkTextProperties()
            props.font = New Font(Font.StandardID.e_StdIDHelvetica)
            props.font_size = 48.0F
            props.color = &HFF0000
            props.alignment = Alignment.e_AlignmentCenter

            Dim watermark As New Watermark(doc, "Confidential", props, settings)

            ' No InsertToAllPages helper — iterate pages explicitly.
            For i As Integer = 0 To doc.GetPageCount() - 1
                Using page As PDFPage = doc.GetPage(i)
                    watermark.InsertToPage(page)
                End Using
            Next

            doc.SaveAs("output.pdf", CInt(PDFDoc.SaveFlags.e_SaveFlagNoOriginal))
        End Using

        Library.Release()
    End Sub
End Module

Imports foxit
Imports foxit.common
Imports foxit.pdf
Imports System

Module Program
    Sub Main()
        Library.Initialize("sn", "key")

        Using doc As New PDFDoc("input.pdf")
            doc.Load("")

            Dim settings As New WatermarkSettings()
            settings.flags = CInt(Watermark.Flags.e_FlagASPageContents)
            settings.position = Position.e_PosCenter
            settings.rotation = -45.0F
            settings.opacity = 50 ' 0-100 in newer SDKs

            Dim props As New WatermarkTextProperties()
            props.font = New Font(Font.StandardID.e_StdIDHelvetica)
            props.font_size = 48.0F
            props.color = &HFF0000
            props.alignment = Alignment.e_AlignmentCenter

            Dim watermark As New Watermark(doc, "Confidential", props, settings)

            ' No InsertToAllPages helper — iterate pages explicitly.
            For i As Integer = 0 To doc.GetPageCount() - 1
                Using page As PDFPage = doc.GetPage(i)
                    watermark.InsertToPage(page)
                End Using
            Next

            doc.SaveAs("output.pdf", CInt(PDFDoc.SaveFlags.e_SaveFlagNoOriginal))
        End Using

        Library.Release()
    End Sub
End Module

Sonrası (IronPDF):

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

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("input.pdf");
        pdf.ApplyWatermark(new TextStamper()
        {
            Text = "Confidential",
            FontSize = 48,
            Opacity = 50,
            Rotation = -45,
            VerticalAlignment = VerticalAlignment.Middle,
            HorizontalAlignment = HorizontalAlignment.Center
        });
        pdf.SaveAs("output.pdf");
    }
}

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

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("input.pdf");
        pdf.ApplyWatermark(new TextStamper()
        {
            Text = "Confidential",
            FontSize = 48,
            Opacity = 50,
            Rotation = -45,
            VerticalAlignment = VerticalAlignment.Middle,
            HorizontalAlignment = HorizontalAlignment.Center
        });
        pdf.SaveAs("output.pdf");
    }
}

Imports IronPdf
Imports IronPdf.Editing
Imports System

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("input.pdf")
        pdf.ApplyWatermark(New TextStamper() With {
            .Text = "Confidential",
            .FontSize = 48,
            .Opacity = 50,
            .Rotation = -45,
            .VerticalAlignment = VerticalAlignment.Middle,
            .HorizontalAlignment = HorizontalAlignment.Center
        })
        pdf.SaveAs("output.pdf")
    End Sub
End Class

Imports IronPdf
Imports IronPdf.Editing
Imports System

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("input.pdf")
        pdf.ApplyWatermark(New TextStamper() With {
            .Text = "Confidential",
            .FontSize = 48,
            .Opacity = 50,
            .Rotation = -45,
            .VerticalAlignment = VerticalAlignment.Middle,
            .HorizontalAlignment = HorizontalAlignment.Center
        })
        pdf.SaveAs("output.pdf")
    End Sub
End Class

IronPDF'nin TextStamper, ayrı ayar nesneleri ve manuel sayfa yinelemesi yerine sezgisel özellik tabanlı yapılandırma sağlar. Ek seçenekler için filigran dokümantasyonunu görün.

Örnek 4: Üstbilgiler ve Altbilgiler ile URL'den PDF'ye

Before (Foxit PDF SDK):

using foxit;
using foxit.addon.conversion;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        try
        {
            HTML2PDFSettingData settings = new HTML2PDFSettingData();
            settings.page_width = 595.0f;  // A4
            settings.page_height = 842.0f;
            settings.page_margin_top = 100.0f;
            settings.page_margin_bottom = 100.0f;

            //Foxit PDF SDKhas limited header/footer support
            // Often requires post-processing or additional code

            Convert.FromHTML(
                "https://www.example.com",
                @"C:\Foxit\html2pdf_engine",  // engine_path (separate download)
                "",                            // cookies path
                settings,
                "webpage.pdf",
                30);                           // timeout (seconds)
        }
        finally
        {
            Library.Release();
        }
    }
}

using foxit;
using foxit.addon.conversion;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        try
        {
            HTML2PDFSettingData settings = new HTML2PDFSettingData();
            settings.page_width = 595.0f;  // A4
            settings.page_height = 842.0f;
            settings.page_margin_top = 100.0f;
            settings.page_margin_bottom = 100.0f;

            //Foxit PDF SDKhas limited header/footer support
            // Often requires post-processing or additional code

            Convert.FromHTML(
                "https://www.example.com",
                @"C:\Foxit\html2pdf_engine",  // engine_path (separate download)
                "",                            // cookies path
                settings,
                "webpage.pdf",
                30);                           // timeout (seconds)
        }
        finally
        {
            Library.Release();
        }
    }
}

Sonrası (IronPDF):

using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.WaitFor.RenderDelay(3000);  // Wait for JS

        // Built-in header/footer support
        renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:center; font-size:12pt;'>Company Report</div>",
            DrawDividerLine = true
        };

        renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:right; font-size:10pt;'>Page {page} of {total-pages}</div>",
            DrawDividerLine = true
        };

        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("webpage.pdf");
    }
}

using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.WaitFor.RenderDelay(3000);  // Wait for JS

        // Built-in header/footer support
        renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:center; font-size:12pt;'>Company Report</div>",
            DrawDividerLine = true
        };

        renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:right; font-size:10pt;'>Page {page} of {total-pages}</div>",
            DrawDividerLine = true
        };

        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");
        pdf.SaveAs("webpage.pdf");
    }
}

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
        renderer.RenderingOptions.PrintHtmlBackgrounds = True
        renderer.RenderingOptions.WaitFor.RenderDelay(3000) ' Wait for JS

        ' Built-in header/footer support
        renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:center; font-size:12pt;'>Company Report</div>",
            .DrawDividerLine = True
        }

        renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:right; font-size:10pt;'>Page {page} of {total-pages}</div>",
            .DrawDividerLine = True
        }

        Dim pdf = renderer.RenderUrlAsPdf("https://www.example.com")
        pdf.SaveAs("webpage.pdf")
    End Sub
End Class

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
        renderer.RenderingOptions.PrintHtmlBackgrounds = True
        renderer.RenderingOptions.WaitFor.RenderDelay(3000) ' Wait for JS

        ' Built-in header/footer support
        renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:center; font-size:12pt;'>Company Report</div>",
            .DrawDividerLine = True
        }

        renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:right; font-size:10pt;'>Page {page} of {total-pages}</div>",
            .DrawDividerLine = True
        }

        Dim pdf = renderer.RenderUrlAsPdf("https://www.example.com")
        pdf.SaveAs("webpage.pdf")
    End Sub
End Class

IronPDF, HTML stillendirmesi ve dinamik sayfa numarası yer tutucularıyla birlikte yerel üstbilgiler ve altbilgiler desteği sağlar.

Örnek 5: PDF Güvenliği ve Şifreleme

Before (Foxit PDF SDK):

using foxit;
using foxit.pdf;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        try
        {
            using (PDFDoc doc = new PDFDoc("input.pdf"))
            {
                doc.LoadW("");

                // Build the encryption data (cipher, key length, permissions)
                using (StdEncryptData encryptData = new StdEncryptData(
                    true,                                    // is_encrypt_metadata
                    (int)(PDFDoc.UserPermissions.e_PermPrint |
                          PDFDoc.UserPermissions.e_PermModify),
                    SecurityHandler.CipherType.e_CipherAES,
                    16))                                     // key length (bytes) -> AES-128
                using (StdSecurityHandler securityHandler = new StdSecurityHandler())
                {
                    securityHandler.Initialize(encryptData, "user_password", "owner_password");
                    doc.SetSecurityHandler(securityHandler);
                }

                doc.SaveAs("encrypted.pdf", (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
            }
        }
        finally
        {
            Library.Release();
        }
    }
}

using foxit;
using foxit.pdf;

class Program
{
    static void Main()
    {
        Library.Initialize("sn", "key");

        try
        {
            using (PDFDoc doc = new PDFDoc("input.pdf"))
            {
                doc.LoadW("");

                // Build the encryption data (cipher, key length, permissions)
                using (StdEncryptData encryptData = new StdEncryptData(
                    true,                                    // is_encrypt_metadata
                    (int)(PDFDoc.UserPermissions.e_PermPrint |
                          PDFDoc.UserPermissions.e_PermModify),
                    SecurityHandler.CipherType.e_CipherAES,
                    16))                                     // key length (bytes) -> AES-128
                using (StdSecurityHandler securityHandler = new StdSecurityHandler())
                {
                    securityHandler.Initialize(encryptData, "user_password", "owner_password");
                    doc.SetSecurityHandler(securityHandler);
                }

                doc.SaveAs("encrypted.pdf", (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
            }
        }
        finally
        {
            Library.Release();
        }
    }
}

Imports foxit
Imports foxit.pdf

Class Program
    Shared Sub Main()
        Library.Initialize("sn", "key")

        Try
            Using doc As New PDFDoc("input.pdf")
                doc.LoadW("")

                ' Build the encryption data (cipher, key length, permissions)
                Using encryptData As New StdEncryptData(True, CType(PDFDoc.UserPermissions.e_PermPrint Or PDFDoc.UserPermissions.e_PermModify, Integer), SecurityHandler.CipherType.e_CipherAES, 16) ' key length (bytes) -> AES-128
                    Using securityHandler As New StdSecurityHandler()
                        securityHandler.Initialize(encryptData, "user_password", "owner_password")
                        doc.SetSecurityHandler(securityHandler)
                    End Using
                End Using

                doc.SaveAs("encrypted.pdf", CType(PDFDoc.SaveFlags.e_SaveFlagNoOriginal, Integer))
            End Using
        Finally
            Library.Release()
        End Try
    End Sub
End Class

Imports foxit
Imports foxit.pdf

Class Program
    Shared Sub Main()
        Library.Initialize("sn", "key")

        Try
            Using doc As New PDFDoc("input.pdf")
                doc.LoadW("")

                ' Build the encryption data (cipher, key length, permissions)
                Using encryptData As New StdEncryptData(True, CType(PDFDoc.UserPermissions.e_PermPrint Or PDFDoc.UserPermissions.e_PermModify, Integer), SecurityHandler.CipherType.e_CipherAES, 16) ' key length (bytes) -> AES-128
                    Using securityHandler As New StdSecurityHandler()
                        securityHandler.Initialize(encryptData, "user_password", "owner_password")
                        doc.SetSecurityHandler(securityHandler)
                    End Using
                End Using

                doc.SaveAs("encrypted.pdf", CType(PDFDoc.SaveFlags.e_SaveFlagNoOriginal, Integer))
            End Using
        Finally
            Library.Release()
        End Try
    End Sub
End Class

Sonrası (IronPDF):

using IronPdf;

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

        // Set passwords
        pdf.SecuritySettings.OwnerPassword = "owner_password";
        pdf.SecuritySettings.UserPassword = "user_password";

        // Set permissions
        pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights;
        pdf.SecuritySettings.AllowUserEdits = IronPdf.Security.PdfEditSecurity.EditAll;
        pdf.SecuritySettings.AllowUserCopyPasteContent = true;
        pdf.SecuritySettings.AllowUserAnnotations = true;

        pdf.SaveAs("encrypted.pdf");
    }
}

using IronPdf;

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

        // Set passwords
        pdf.SecuritySettings.OwnerPassword = "owner_password";
        pdf.SecuritySettings.UserPassword = "user_password";

        // Set permissions
        pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights;
        pdf.SecuritySettings.AllowUserEdits = IronPdf.Security.PdfEditSecurity.EditAll;
        pdf.SecuritySettings.AllowUserCopyPasteContent = true;
        pdf.SecuritySettings.AllowUserAnnotations = true;

        pdf.SaveAs("encrypted.pdf");
    }
}

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("input.pdf")

        ' Set passwords
        pdf.SecuritySettings.OwnerPassword = "owner_password"
        pdf.SecuritySettings.UserPassword = "user_password"

        ' Set permissions
        pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights
        pdf.SecuritySettings.AllowUserEdits = IronPdf.Security.PdfEditSecurity.EditAll
        pdf.SecuritySettings.AllowUserCopyPasteContent = True
        pdf.SecuritySettings.AllowUserAnnotations = True

        pdf.SaveAs("encrypted.pdf")
    End Sub
End Class

Imports IronPdf

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("input.pdf")

        ' Set passwords
        pdf.SecuritySettings.OwnerPassword = "owner_password"
        pdf.SecuritySettings.UserPassword = "user_password"

        ' Set permissions
        pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights
        pdf.SecuritySettings.AllowUserEdits = IronPdf.Security.PdfEditSecurity.EditAll
        pdf.SecuritySettings.AllowUserCopyPasteContent = True
        pdf.SecuritySettings.AllowUserAnnotations = True

        pdf.SaveAs("encrypted.pdf")
    End Sub
End Class

Performans Dikkat Edilecek Hususlar

ChromePdfRenderer'ı Yeniden Kullanın

Foxit PDF geçişiniz sırasında en iyi performans için ChromePdfRenderer örneğini yeniden kullanın—bu, iplik güvenlidir:

// GOOD - Reuse renderer (thread-safe)
public class PdfService
{
    private static readonly ChromePdfRenderer _renderer = new ChromePdfRenderer();

    public byte[] Generate(string html) => _renderer.RenderHtmlAsPdf(html).BinaryData;
}

// BAD - Creates new instance each time
public byte[] GenerateBad(string html)
{
    var renderer = new ChromePdfRenderer();  // Wasteful
    return renderer.RenderHtmlAsPdf(html).BinaryData;
}

// GOOD - Reuse renderer (thread-safe)
public class PdfService
{
    private static readonly ChromePdfRenderer _renderer = new ChromePdfRenderer();

    public byte[] Generate(string html) => _renderer.RenderHtmlAsPdf(html).BinaryData;
}

// BAD - Creates new instance each time
public byte[] GenerateBad(string html)
{
    var renderer = new ChromePdfRenderer();  // Wasteful
    return renderer.RenderHtmlAsPdf(html).BinaryData;
}

Imports System

Public Class PdfService
    Private Shared ReadOnly _renderer As New ChromePdfRenderer()

    Public Function Generate(html As String) As Byte()
        Return _renderer.RenderHtmlAsPdf(html).BinaryData
    End Function

    ' BAD - Creates new instance each time
    Public Function GenerateBad(html As String) As Byte()
        Dim renderer As New ChromePdfRenderer() ' Wasteful
        Return renderer.RenderHtmlAsPdf(html).BinaryData
    End Function
End Class

Imports System

Public Class PdfService
    Private Shared ReadOnly _renderer As New ChromePdfRenderer()

    Public Function Generate(html As String) As Byte()
        Return _renderer.RenderHtmlAsPdf(html).BinaryData
    End Function

    ' BAD - Creates new instance each time
    Public Function GenerateBad(html As String) As Byte()
        Dim renderer As New ChromePdfRenderer() ' Wasteful
        Return renderer.RenderHtmlAsPdf(html).BinaryData
    End Function
End Class

Birim Dönüşüm Yardımcısı

Foxit PDF SDK puanları kullanır;IronPDF milimetre kullanır. Geçiş sırasında bu yardımcıyı kullanın:

public static class UnitConverter
{
    public static double PointsToMm(double points) => points * 0.352778;
    public static double MmToPoints(double mm) => mm / 0.352778;
    public static double InchesToMm(double inches) => inches * 25.4;
}

// Usage: Convert Foxit's 72 points (1 inch) to IronPDF millimeters
renderer.RenderingOptions.MarginTop = UnitConverter.PointsToMm(72); // ~25.4mm

public static class UnitConverter
{
    public static double PointsToMm(double points) => points * 0.352778;
    public static double MmToPoints(double mm) => mm / 0.352778;
    public static double InchesToMm(double inches) => inches * 25.4;
}

// Usage: Convert Foxit's 72 points (1 inch) to IronPDF millimeters
renderer.RenderingOptions.MarginTop = UnitConverter.PointsToMm(72); // ~25.4mm

Public Module UnitConverter
    Public Function PointsToMm(points As Double) As Double
        Return points * 0.352778
    End Function

    Public Function MmToPoints(mm As Double) As Double
        Return mm / 0.352778
    End Function

    Public Function InchesToMm(inches As Double) As Double
        Return inches * 25.4
    End Function
End Module

' Usage: Convert Foxit's 72 points (1 inch) to IronPDF millimeters
renderer.RenderingOptions.MarginTop = UnitConverter.PointsToMm(72) ' ~25.4mm

Public Module UnitConverter
    Public Function PointsToMm(points As Double) As Double
        Return points * 0.352778
    End Function

    Public Function MmToPoints(mm As Double) As Double
        Return mm / 0.352778
    End Function

    Public Function InchesToMm(inches As Double) As Double
        Return inches * 25.4
    End Function
End Module

' Usage: Convert Foxit's 72 points (1 inch) to IronPDF millimeters
renderer.RenderingOptions.MarginTop = UnitConverter.PointsToMm(72) ' ~25.4mm

Kaynakların Doğru Şekilde Atılması

// GOOD - Using statement for automatic cleanup
using (var pdf = PdfDocument.FromFile("large.pdf"))
{
    string text = pdf.ExtractAllText();
}  // pdf is disposed automatically

// GOOD - Using statement for automatic cleanup
using (var pdf = PdfDocument.FromFile("large.pdf"))
{
    string text = pdf.ExtractAllText();
}  // pdf is disposed automatically

Imports PdfDocument

' GOOD - Using block for automatic cleanup
Using pdf = PdfDocument.FromFile("large.pdf")
    Dim text As String = pdf.ExtractAllText()
End Using ' pdf is disposed automatically

Imports PdfDocument

' GOOD - Using block for automatic cleanup
Using pdf = PdfDocument.FromFile("large.pdf")
    Dim text As String = pdf.ExtractAllText()
End Using ' pdf is disposed automatically

Hata Ayıklama

Sorun 1: Library.Initialize() Bulunamadı

Problem: Library.Initialize() IronPDF'de yok.

**Solution:**IronPDF daha basit bir başlatma modeli kullanır:

// Foxit PDF
Library.Initialize(sn, key);

//IronPDF- just set license key once at startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

// Foxit PDF
Library.Initialize(sn, key);

//IronPDF- just set license key once at startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

Sorun 2: ErrorCode İşleme

Problem: Kod kontrol eder ErrorCode.e_ErrSuccess ama IronPDF bunu içermez.

Solution: Standart .NET istisna yönetimini kullanın:

// Foxit PDF
ErrorCode err = doc.LoadW("");
if (err != ErrorCode.e_ErrSuccess) { /* handle error */ }

// IronPDF
try
{
    var pdf = PdfDocument.FromFile("input.pdf");
}
catch (IOException ex)
{
    Console.WriteLine($"Failed to load PDF: {ex.Message}");
}

// Foxit PDF
ErrorCode err = doc.LoadW("");
if (err != ErrorCode.e_ErrSuccess) { /* handle error */ }

// IronPDF
try
{
    var pdf = PdfDocument.FromFile("input.pdf");
}
catch (IOException ex)
{
    Console.WriteLine($"Failed to load PDF: {ex.Message}");
}

Imports System
Imports System.IO

' Foxit PDF
Dim err As ErrorCode = doc.LoadW("")
If err <> ErrorCode.e_ErrSuccess Then
    ' handle error
End If

' IronPDF
Try
    Dim pdf = PdfDocument.FromFile("input.pdf")
Catch ex As IOException
    Console.WriteLine($"Failed to load PDF: {ex.Message}")
End Try

Imports System
Imports System.IO

' Foxit PDF
Dim err As ErrorCode = doc.LoadW("")
If err <> ErrorCode.e_ErrSuccess Then
    ' handle error
End If

' IronPDF
Try
    Dim pdf = PdfDocument.FromFile("input.pdf")
Catch ex As IOException
    Console.WriteLine($"Failed to load PDF: {ex.Message}")
End Try

Sorun 3: PDFDoc.Close() Bulunamadı

Problem: doc.Close() metodu IronPDF'de yok.

Çözüm: Dispose() veya using ifadelerini kullanın:

// Foxit PDF
doc.Close();

// IronPDF
pdf.Dispose();
// or better: wrap in using statement

// Foxit PDF
doc.Close();

// IronPDF
pdf.Dispose();
// or better: wrap in using statement

net

net

Geçiş Kontrol Listesi

Öncesi-Geçiş

Kullanılan tümFoxit PDF SDKözelliklerini envanterini çıkar
Lisans anahtarı yerlerini belgeleyin
Tüm Library.Initialize() ve Library.Release() çağrılarını not alın
Özel ayarları listeleyin (sayfa boyutları, kenar boşlukları, vb.)
ErrorCode kullanarak hata yönetimi kalıplarını belirleyin
Projeyi sürüm kontrolüne yedekleyin -IronPDF lisans anahtarını edinin

Paket Göçü

-Foxit PDF SDKDLL başvurularını .csproj'den kaldırın

Herhangi bir özel NuGet besleme yapılandırmasını kaldırın -IronPDF NuGet paketini yükleyin: dotnet add package IronPdf
Ad alanı ithalatlarını güncelleyin
Başlangıçta IronPDF lisans anahtarını ayarlayın

Kod Geçişi

Library.Initialize() ve Library.Release() çağrılarını kaldırın
ErrorCode kontrollerini try/catch ile değiştirin
PDFDoc'i PdfDocument ile değiştirin
Convert.FromHTML(...)'i ChromePdfRenderer ile değiştirin
Sayfa erişimini GetPage(i)'dan Pages[i]'e güncelleyin
SaveAs(path, flags)'i SaveAs(path) ile değiştirin
Close()'i Dispose() ile veya using ifadeleriyle değiştirin
Filigran kodunu TextStamper kullanmak için güncelleyin
Birimleri noktadan milimetreye dönüştürün

Test Etme

HTML'den PDF'ye çıkışın beklentilere uygun olduğundan emin olun
PDF yükleme ve metin çıkarımı testi yapın
Birleştirme işlevselliğini doğrulayın
Filigran görünümünü kontrol edin
Güvenlik/şifreleme özelliklerini test edin
Form alanı işlemlerini doğrulayın
Performans testi yapın

Geçiş Sonrası

-Foxit PDF SDKDLL'lerini silin

Foxit ile ilgili yapılandırma dosyalarını kaldırın
Belgeleri güncelleyin
Kullanılmayan yardımcı kodu temizleyin

Lütfen dikkate alın: Foxit PDF SDK ve Foxit, Foxit Software Incorporated'ın tescilli markalarıdır. Bu site, Foxit Software ile bağlantılı, onaylanmış veya desteklenmiş değildir. Tüm ürün adları, logolar ve markalar kendi sahiplerine aittir. Karşılaştırmalar, yalnızca bilgilendirme amaçlıdır ve yazı sırasında halka açık bilgilerle alakalı olarak yansıtılmaktadır.

Curtis Chau

Mühendislik ekibiyle şimdi sohbet edin

Teknik Yazar

Curtis Chau, Bilgisayar Bilimleri alanında Lisans Derecesine (Carleton Üniversitesi) sahip ve Node.js, TypeScript, JavaScript ve React konularında uzmanlaşmış ön uç geliştirmeyle ilgileniyor. Sezgisel ve estetik açıdan hoş kullanıcı arayüzleri oluşturma tutkunu, Curtis modern çerçevelerle çalışmayı ve iyi yapılandırılmış, görsel olarak çekici kılavuzlar oluşturmayı seviyor.

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