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