C# PDF程式庫

HTML 轉 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");

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

影片

如何使用 IronPDF 在 C# 中分割多頁 PDF | IronPDF

Curtis Chau

Updated: 2026年7月19日

Winnovative在.NET PDF生成領域中一直是一個受認可的名稱，為C#應用程式提供HTML轉PDF的轉換功能。然而，這個長期運行的Classic程式庫依賴於較舊的專屬渲染引擎，其對現代CSS（網格、最近的Flexbox）和現代JavaScript（ES2017+）的支持相比當前Chromium瀏覽器不一致。供應商的回應是推出一個獨立的Chromium類產品，Winnovative.Pdf.Next，而不是在原地升級Classic — 這意味著現有的Winnovative客戶無論如何都要面臨程式碼遷移。

本指南為從Winnovative遷移到IronPDF提供了一條遷移路徑，包含步驟指導、程式碼比較和針對.NET開發者評估遷移的實際範例。

為什麼要從Winnovative遷移

Winnovative的Classic程式庫使用的較舊專屬引擎未更新到現代網頁標準：

**不一致的CSS網格/現代Flexbox：**依賴CSS網格或最近Flexbox功能的布局，相比當前Chromium瀏覽器可能會渲染不正確。

**現代JavaScript相容性差距：**ES2017+功能（箭頭函式、async/await、類）執行不可靠，這影響了React、Vue和其它現代框架。

**更新緩慢：**Classic引擎不頻繁接收渲染引擎更新；供應商的答案是推出獨立的Winnovative.Pdf.Next Chromium類產品，讓Classic功能凍結。

**雙產品遷移負擔：**轉移到Winnovative.Pdf.Next本身需要重寫—Next API存在於不同的命名空間(Winnovative.Pdf.Next)下，且與Classic二進制不相容。

**字體渲染邊緣情況：**網頁字體和自定義字體有時會與現代瀏覽器不同渲染。

實際影響

在Winnovative Classic中可能不一致渲染的現代CSS和JavaScript：

<!-- CSS Grid can render inconsistently inWinnovative Classic-->
<div style="display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;">
  <div>Column 1</div>
  <div>Column 2</div>
  <div>Column 3</div>
</div>

<!-- Modern JavaScript may not execute reliably in Classic -->
<script>
const items = data.map(item => item.name);
const result = await fetchData();
class Report { }
</script>

<!-- CSS Grid can render inconsistently inWinnovative Classic-->
<div style="display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;">
  <div>Column 1</div>
  <div>Column 2</div>
  <div>Column 3</div>
</div>

<!-- Modern JavaScript may not execute reliably in Classic -->
<script>
const items = data.map(item => item.name);
const result = await fetchData();
class Report { }
</script>

HTML

##IronPDFvs Winnovative：功能比較

了解結構差異有助於技術決策者評估遷移投資：

方面	Winnovative Classic	IronPDF
渲染引擎	較舊的專屬引擎	Chromium（當前）
CSS Grid CSS 網格布局	不一致的	完全支援
Flexbox	在邊緣情況下不一致	完全支援
JavaScript	現代JavaScript有限	ES2024
Bootstrap 5	佈局問題	完全支援
Tailwind CSS	有限	完全支援
React/Vue SSR	有問題	運行
網頁字型	在某些設置下不可靠	完全支援
更新	不頻繁	每月
定價（每位開發者）	450美元部署 / 1,200美元可再發布	See ironpdf.com/pricing

快速開始：從Winnovative到IronPDF的遷移

可以立即透過這些基本步驟開始遷移。

步驟 1：替換 NuGet 套件

移除所有Winnovative套件（驗證您的專案實際使用的）：

# Remove Winnovative (Classic + related utilities)
dotnet remove package Winnovative.HtmlToPdf
# Also remove any of these your project references:
# dotnet remove package Winnovative.PdfMerge
# dotnet remove package Winnovative.PdfSecurity
# dotnet remove package Winnovative.Pdf.Next.Core
# dotnet remove package Winnovative.Client

# Remove Winnovative (Classic + related utilities)
dotnet remove package Winnovative.HtmlToPdf
# Also remove any of these your project references:
# dotnet remove package Winnovative.PdfMerge
# dotnet remove package Winnovative.PdfSecurity
# dotnet remove package Winnovative.Pdf.Next.Core
# dotnet remove package Winnovative.Client

SHELL

安裝 IronPDF：

# Install IronPDF
dotnet add package IronPdf

# Install IronPDF
dotnet add package IronPdf

SHELL

步驟 2：更新命名空間

將Winnovative命名空間替換為IronPDF命名空間：

// Before (Winnovative)
using Winnovative;
using Winnovative.WebKit;

// After (IronPDF)
using IronPdf;

// Before (Winnovative)
using Winnovative;
using Winnovative.WebKit;

// After (IronPDF)
using IronPdf;

Imports IronPdf

Imports IronPdf

步驟 3：初始化授權

在應用啓動時新增授權初始化：

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

程式碼遷移範例

將HTML轉換為PDF

最常見的用例展示了這些.NET PDF程式庫之間的API差異。

Winnovative方法：

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Convert HTML string to PDF
        string htmlString = "<html><body><h1>Hello World</h1></body></html>";
        byte[] pdfBytes = htmlToPdfConverter.ConvertHtml(htmlString, "");
        
        // Save to file
        System.IO.File.WriteAllBytes("output.pdf", pdfBytes);
        
        Console.WriteLine("PDF created successfully");
    }
}

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Convert HTML string to PDF
        string htmlString = "<html><body><h1>Hello World</h1></body></html>";
        byte[] pdfBytes = htmlToPdfConverter.ConvertHtml(htmlString, "");
        
        // Save to file
        System.IO.File.WriteAllBytes("output.pdf", pdfBytes);
        
        Console.WriteLine("PDF created successfully");
    }
}

IronPDF 方法：

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Convert HTML string to PDF
        string htmlString = "<html><body><h1>Hello World</h1></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(htmlString);
        
        // Save to file
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created successfully");
    }
}

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Convert HTML string to PDF
        string htmlString = "<html><body><h1>Hello World</h1></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(htmlString);
        
        // Save to file
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created successfully");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()
        
        ' Convert HTML string to PDF
        Dim htmlString As String = "<html><body><h1>Hello World</h1></body></html>"
        Dim pdf = renderer.RenderHtmlAsPdf(htmlString)
        
        ' Save to file
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created successfully")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()
        
        ' Convert HTML string to PDF
        Dim htmlString As String = "<html><body><h1>Hello World</h1></body></html>"
        Dim pdf = renderer.RenderHtmlAsPdf(htmlString)
        
        ' Save to file
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created successfully")
    End Sub
End Module

Winnovative需要建立一個ConvertHtml()以接收原始字節，並手動寫入文件。 IronPDF簡化了這一過程：建立一個SaveAs()方法。

如需進階 HTML 到 PDF 的場景，請參見 HTML 到 PDF 轉換指南。

將 URL 轉換為 PDF

URL到PDF的轉換顯示了類似的模式。

Winnovative方法：

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Convert URL to PDF
        string url = "https://www.example.com";
        byte[] pdfBytes = htmlToPdfConverter.ConvertUrl(url);
        
        // Save to file
        System.IO.File.WriteAllBytes("webpage.pdf", pdfBytes);
        
        Console.WriteLine("PDF from URL created successfully");
    }
}

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Convert URL to PDF
        string url = "https://www.example.com";
        byte[] pdfBytes = htmlToPdfConverter.ConvertUrl(url);
        
        // Save to file
        System.IO.File.WriteAllBytes("webpage.pdf", pdfBytes);
        
        Console.WriteLine("PDF from URL created successfully");
    }
}

IronPDF 方法：

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Convert URL to PDF
        string url = "https://www.example.com";
        var pdf = renderer.RenderUrlAsPdf(url);
        
        // Save to file
        pdf.SaveAs("webpage.pdf");
        
        Console.WriteLine("PDF from URL created successfully");
    }
}

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Convert URL to PDF
        string url = "https://www.example.com";
        var pdf = renderer.RenderUrlAsPdf(url);
        
        // Save to file
        pdf.SaveAs("webpage.pdf");
        
        Console.WriteLine("PDF from URL created successfully");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()
        
        ' Convert URL to PDF
        Dim url As String = "https://www.example.com"
        Dim pdf = renderer.RenderUrlAsPdf(url)
        
        ' Save to file
        pdf.SaveAs("webpage.pdf")
        
        Console.WriteLine("PDF from URL created successfully")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()
        
        ' Convert URL to PDF
        Dim url As String = "https://www.example.com"
        Dim pdf = renderer.RenderUrlAsPdf(url)
        
        ' Save to file
        pdf.SaveAs("webpage.pdf")
        
        Console.WriteLine("PDF from URL created successfully")
    End Sub
End Module

Winnovative使用ConvertUrl()返回的字節必須手動保存。 IronPDF提供PdfDocument物件。

查看 URL 到 PDF 文件，了解認證和自定義標頭選項。

新增標題和頁腳

頁眉和頁腳顯示了顯著的架構差異。 Winnovative使用基於程式元素的方法使用TextElement物件，而IronPDF使用帶有佔位符標記的HTML基頁眉。

Winnovative方法：

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;
using System.Drawing;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Enable header
        htmlToPdfConverter.PdfDocumentOptions.ShowHeader = true;
        htmlToPdfConverter.PdfHeaderOptions.HeaderHeight = 60;
        
        // Add header text
        TextElement headerText = new TextElement(0, 0, "Document Header", new Font("Arial", 12));
        htmlToPdfConverter.PdfHeaderOptions.AddElement(headerText);
        
        // Enable footer
        htmlToPdfConverter.PdfDocumentOptions.ShowFooter = true;
        htmlToPdfConverter.PdfFooterOptions.FooterHeight = 60;
        
        // Add footer with page number
        TextElement footerText = new TextElement(0, 0, "Page &p; of &P;", new Font("Arial", 10));
        htmlToPdfConverter.PdfFooterOptions.AddElement(footerText);
        
        // Convert HTML to PDF
        string htmlString = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>";
        byte[] pdfBytes = htmlToPdfConverter.ConvertHtml(htmlString, "");
        
        // Save to file
        System.IO.File.WriteAllBytes("document.pdf", pdfBytes);
        
        Console.WriteLine("PDF with header and footer created successfully");
    }
}

// NuGet: Install-Package Winnovative.HtmlToPdf
using Winnovative;
using System;
using System.Drawing;

class Program
{
    static void Main()
    {
        // Create the HTML to PDF converter
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
        
        // Set license key
        htmlToPdfConverter.LicenseKey = "your-license-key";
        
        // Enable header
        htmlToPdfConverter.PdfDocumentOptions.ShowHeader = true;
        htmlToPdfConverter.PdfHeaderOptions.HeaderHeight = 60;
        
        // Add header text
        TextElement headerText = new TextElement(0, 0, "Document Header", new Font("Arial", 12));
        htmlToPdfConverter.PdfHeaderOptions.AddElement(headerText);
        
        // Enable footer
        htmlToPdfConverter.PdfDocumentOptions.ShowFooter = true;
        htmlToPdfConverter.PdfFooterOptions.FooterHeight = 60;
        
        // Add footer with page number
        TextElement footerText = new TextElement(0, 0, "Page &p; of &P;", new Font("Arial", 10));
        htmlToPdfConverter.PdfFooterOptions.AddElement(footerText);
        
        // Convert HTML to PDF
        string htmlString = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>";
        byte[] pdfBytes = htmlToPdfConverter.ConvertHtml(htmlString, "");
        
        // Save to file
        System.IO.File.WriteAllBytes("document.pdf", pdfBytes);
        
        Console.WriteLine("PDF with header and footer created successfully");
    }
}

IronPDF 方法：

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Configure header and footer
        renderer.RenderingOptions.TextHeader = new TextHeaderFooter()
        {
            CenterText = "Document Header",
            FontSize = 12
        };
        
        renderer.RenderingOptions.TextFooter = new TextHeaderFooter()
        {
            CenterText = "Page {page} of {total-pages}",
            FontSize = 10
        };
        
        // Convert HTML to PDF
        string htmlString = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(htmlString);
        
        // Save to file
        pdf.SaveAs("document.pdf");
        
        Console.WriteLine("PDF with header and footer created successfully");
    }
}

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

class Program
{
    static void Main()
    {
        // Create a PDF renderer
        var renderer = new ChromePdfRenderer();
        
        // Configure header and footer
        renderer.RenderingOptions.TextHeader = new TextHeaderFooter()
        {
            CenterText = "Document Header",
            FontSize = 12
        };
        
        renderer.RenderingOptions.TextFooter = new TextHeaderFooter()
        {
            CenterText = "Page {page} of {total-pages}",
            FontSize = 10
        };
        
        // Convert HTML to PDF
        string htmlString = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(htmlString);
        
        // Save to file
        pdf.SaveAs("document.pdf");
        
        Console.WriteLine("PDF with header and footer created successfully");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports IronPdf.Rendering
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()

        ' Configure header and footer
        renderer.RenderingOptions.TextHeader = New TextHeaderFooter() With {
            .CenterText = "Document Header",
            .FontSize = 12
        }

        renderer.RenderingOptions.TextFooter = New TextHeaderFooter() With {
            .CenterText = "Page {page} of {total-pages}",
            .FontSize = 10
        }

        ' Convert HTML to PDF
        Dim htmlString As String = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>"
        Dim pdf = renderer.RenderHtmlAsPdf(htmlString)

        ' Save to file
        pdf.SaveAs("document.pdf")

        Console.WriteLine("PDF with header and footer created successfully")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports IronPdf.Rendering
Imports System

Module Program
    Sub Main()
        ' Create a PDF renderer
        Dim renderer As New ChromePdfRenderer()

        ' Configure header and footer
        renderer.RenderingOptions.TextHeader = New TextHeaderFooter() With {
            .CenterText = "Document Header",
            .FontSize = 12
        }

        renderer.RenderingOptions.TextFooter = New TextHeaderFooter() With {
            .CenterText = "Page {page} of {total-pages}",
            .FontSize = 10
        }

        ' Convert HTML to PDF
        Dim htmlString As String = "<html><body><h1>Document with Header and Footer</h1><p>Content goes here</p></body></html>"
        Dim pdf = renderer.RenderHtmlAsPdf(htmlString)

        ' Save to file
        pdf.SaveAs("document.pdf")

        Console.WriteLine("PDF with header and footer created successfully")
    End Sub
End Module

Winnovative需要通過&P;佔位符。 IronPDF使用具有簡單屬性例如FontSize，以及直覺的佔位符例如{total-pages}。

欲了解全面CSS樣式的HTML基頁眉，請參見頁眉和頁腳說明文件。

Winnovative API到IronPDF映射參考

此映射透過展示直接的 API 等價加速遷移：

Winnovative類	IronPDF等價
`HtmlToPdfConverter`	`ChromePdfRenderer`
`PdfDocument`	`PdfDocument`
`PdfDocumentOptions`	`RenderingOptions`
`PdfHeaderOptions`	`HtmlHeaderFooter`
`PdfFooterOptions`	`HtmlHeaderFooter`
`TextElement`	HTML 在`HtmlFragment`
`ImageElement`	HTML `<img>`

方法映射

Winnovative方法	IronPDF方法
`ConvertUrl(url)`	`RenderUrlAsPdf(url)`
`ConvertUrlToFile(url, path)`	`RenderUrlAsPdf(url).SaveAs(path)`
`ConvertHtml(html, baseUrl)`	`RenderHtmlAsPdf(html)`
`ConvertHtmlToFile(html, path)`	`RenderHtmlAsPdf(html).SaveAs(path)`
`ConvertHtmlFile(path)`	`RenderHtmlFileAsPdf(path)`
`MergePdf(streams)`	`PdfDocument.Merge(pdfs)`
`AppendPdf(pdf)`	`pdf1.AppendPdf(pdf2)`

選項映射

Winnovative選項	IronPDF 選項
`PdfPageSize.A4`	`PaperSize = PdfPaperSize.A4`
`PdfPageSize.Letter`	`PaperSize = PdfPaperSize.Letter`
`PdfPageOrientation.Portrait`	`PaperOrientation = PdfPaperOrientation.Portrait`
`PdfPageOrientation.Landscape`	`PaperOrientation = PdfPaperOrientation.Landscape`
`TopMargin = 20`	`MarginTop = 20`
`BottomMargin = 20`	`MarginBottom = 20`
`LeftMargin = 15`	`MarginLeft = 15`
`RightMargin = 15`	`MarginRight = 15`
`ShowHeader = true`	設置`HtmlHeader`屬性
`ShowFooter = true`	設置`HtmlFooter`屬性
`JavaScriptEnabled = true`	`EnableJavaScript = true`
頁碼`&p;`	頁碼`{page}`
總頁數`&P;`	總頁數`{total-pages}`

常見遷移問題及解決方案

問題1：CSS佈局看起來不同

**症狀：**在Winnovative中看起來"還好"的佈局現在看起來在IronPDF中不同。

**原因：**Winnovative Classic較舊專屬引擎存在開發者所解決的渲染問題。 IronPDF的當前Chromium引擎正確渲染這些。

**解決方案：**移除Winnovative特定的CSS黑技使用標準CSS：

// Clean up legacy CSS
string cleanedHtml = html
    .Replace("-webkit-flex", "flex")
    .Replace("display: -webkit-box", "display: flex");

// Clean up legacy CSS
string cleanedHtml = html
    .Replace("-webkit-flex", "flex")
    .Replace("display: -webkit-box", "display: flex");

Dim cleanedHtml As String = html _
    .Replace("-webkit-flex", "flex") _
    .Replace("display: -webkit-box", "display: flex")

Dim cleanedHtml As String = html _
    .Replace("-webkit-flex", "flex") _
    .Replace("display: -webkit-box", "display: flex")

問題2：JavaScript沒有執行

**症狀：**動態內容沒有出現在PDF中。

**原因：**需要明確配置JavaScript等待選項。

解決方案：

renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.JavaScript(5000);
// Or wait for specific element
renderer.RenderingOptions.WaitFor.HtmlElementById("content-ready", 10000);

renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.JavaScript(5000);
// Or wait for specific element
renderer.RenderingOptions.WaitFor.HtmlElementById("content-ready", 10000);

net

net

問題3：基本URL不起作用

**症狀：**圖片和CSS的相對URL無法解析。

**原因：**IronPDF需要明確的基本URL配置。

解決方案：

renderer.RenderingOptions.BaseUrl = new Uri("https://example.com/");

renderer.RenderingOptions.BaseUrl = new Uri("https://example.com/");

renderer.RenderingOptions.BaseUrl = New Uri("https://example.com/")

renderer.RenderingOptions.BaseUrl = New Uri("https://example.com/")

問題4：不同的分頁

**症狀：**內容在不同點上分頁與Winnovative不同。

**原因：**不同的渲染引擎處理分頁不同。

**解決方案：**使用明確的CSS分頁控制：

/* Control page breaks explicitly */
.no-break {
    page-break-inside: avoid;
}
.page-break-before {
    page-break-before: always;
}
.page-break-after {
    page-break-after: always;
}

/* Control page breaks explicitly */
.no-break {
    page-break-inside: avoid;
}
.page-break-before {
    page-break-before: always;
}
.page-break-after {
    page-break-after: always;
}

Text

問題5：字體看起來不同

**症狀：**文字顯示的字體與期望不同。

**原因：**IronPDF使用系統字體；網頁字體需要明確載入。

解決方案：

<style>
@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

body {
    font-family: 'Roboto', Arial, sans-serif;
}
</style>

<style>
@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

body {
    font-family: 'Roboto', Arial, sans-serif;
}
</style>

HTML

Winnovative遷移檢查表

遷移前任務

審核您的程式碼庫以確定所有Winnovative的使用：

# Find all Winnovative references
grep -r "Winnovative" --include="*.cs" .
grep -r "HtmlToPdfConverter" --include="*.cs" .
grep -r "PdfDocumentOptions" --include="*.cs" .
grep -r "ConvertUrl\|ConvertHtml" --include="*.cs" .

# Find all Winnovative references
grep -r "Winnovative" --include="*.cs" .
grep -r "HtmlToPdfConverter" --include="*.cs" .
grep -r "PdfDocumentOptions" --include="*.cs" .
grep -r "ConvertUrl\|ConvertHtml" --include="*.cs" .

SHELL

記錄當前配置，只包括頁面大小、邊距和頁眉/頁腳設置。識別CSS黑技（webkit前綴，基於浮動的網格）可以移除。註明JavaScript的相容性要求。