【教程】PDF组件Spire.PDF 教程：如何在C＃，VB.NET中将HTML样式化文本插入PDF

心已赠人 2022-06-07 05:11 307阅读 0赞

[Spire.PDF][]支持通过使用PdfHTMLTextElement类在PDF文档中呈现简单的HTML字符串。该类支持一组基本的HTML标签，包括Font，B，I，U，Sub，Sup和BR。对于使用CSS的复杂HTML呈现，请检查将HTML字符串转换为PDF。

详细步骤：

Step 1: 创建一个新的PDF文档，添加一个页面。

PdfDocument doc = new PdfDocument();
    PdfNewPage page = doc.Pages.Add() as PdfNewPage;

Step 2: 定义HTML字符串。

string htmlText= "This demo shows how we can insert HTML styled text to PDF using "
 + "Spire.PDF for .NET. ";

Step 3: 渲染HTML文本。

PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 5);
    PdfBrush brush = PdfBrushes.Black;
    PdfHTMLTextElement richTextElement = new PdfHTMLTextElement(htmlText, font, brush);
    richTextElement.TextAlign = TextAlign.Left;

Step 4: 格式化页面布局，以使HTML文本在内容超过一页时会分解成多个页面。

PdfMetafileLayoutFormat format = new PdfMetafileLayoutFormat();
    format.Layout = PdfLayoutType.Paginate;
    format.Break = PdfLayoutBreakType.FitPage;

Step 5: 在页面上绘制HTML字符串。

richTextElement.Draw(page, new RectangleF(0, 20, page.GetClientSize().Width, page.GetClientSize().Height), format);

Step 6: 保存文档。

doc.SaveToFile("Output.pdf");

输出：

![图片1][1]

完整代码：

\[C\#\]

//Create a Pdf document
 PdfDocument doc = new PdfDocument();
 
 //Add a new page
 PdfNewPage page = doc.Pages.Add() as PdfNewPage;
 
 //HTML string
 string htmlText= "This demo shows how we can insert HTML styled text to PDF using "
 + "Spire.PDF for .NET. ";
 
 //Render HTML text
 PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 5);
 PdfBrush brush = PdfBrushes.Black;
 PdfHTMLTextElement richTextElement = new PdfHTMLTextElement(htmlText, font, brush);
 richTextElement.TextAlign = TextAlign.Left;
 
 //Format Layout
 PdfMetafileLayoutFormat format = new PdfMetafileLayoutFormat();
 format.Layout = PdfLayoutType.Paginate;
 format.Break = PdfLayoutBreakType.FitPage;
 
 //Draw htmlString 
 richTextElement.Draw(page, new RectangleF(0, 20, page.GetClientSize().Width, page.GetClientSize().Height), format);
 doc.SaveToFile("Output.pdf");

\[VB.NET\]

'Create a Pdf document
 Dim doc As New PdfDocument()
 
 'Add a new page
 Dim page As PdfNewPage = TryCast(doc.Pages.Add(), PdfNewPage)
 
 'HTML string
 Dim htmlText As String = "This demo shows how we can insert HTML styled text to PDF using "
 & "Spire.PDF for .NET. "
 
 'Render HTML text
 Dim font As New PdfFont(PdfFontFamily.Helvetica, 5)
 Dim brush As PdfBrush = PdfBrushes.Black
 Dim richTextElement As New PdfHTMLTextElement(htmlText, font, brush)
 richTextElement.TextAlign = TextAlign.Left
 
 'Format Layout
 Dim format As New PdfMetafileLayoutFormat()
 format.Layout = PdfLayoutType.Paginate
 format.Break = PdfLayoutBreakType.FitPage
 
 'Draw htmlString 
 richTextElement.Draw(page, New RectangleF(0, 20, page.GetClientSize().Width, page.GetClientSize().Height), format)
 doc.SaveToFile("Output.pdf")

--------------------

[点击下载Spire.PDF][Spire.PDF 1]

[Spire.PDF]: https://www.evget.com/product/3377
[1]: /images/20220607/e110a7c8624d4c7b95902de90f4d6ee2.png
[Spire.PDF 1]: https://www.evget.com/product/3377/download