我正在通过OpenXML Powertools的htmlconverter类创建一个XElement。
XElement html = HtmlConverter.ConvertToHtml(doc, settings)
现在我正在尝试添加一些新节点,如
html.Element("head").Add(new XElement("link",
new XAttribute("href", "stylesheet.css"),
new XAttribute("rel", "stylesheet"),
new XAttribute("type", "text/css")));
但是html.Element(“head”)总是返回null,并且在调试模式下运行时我从Visual Studio得到NullReferenceException错误,我仍然不知道为什么。
这是基于此article的代码,我目前正在我的项目中使用它。我认为它必须对htmlconverter做一些事情,因为如果我创建一个手工制作的XElement它会起作用。
// This example shows the simplest conversion. No images are converted.
// A cascading style sheet is not used.
byte[] byteArray = File.ReadAllBytes("Test.docx");
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(byteArray, 0, byteArray.Length);
using (WordprocessingDocument doc =
WordprocessingDocument.Open(memoryStream, true))
{
HtmlConverterSettings settings = new HtmlConverterSettings()
{
PageTitle = "My Page Title"
};
XElement html = HtmlConverter.ConvertToHtml(doc, settings);
// Note: the XHTML returned by ConvertToHtmlTransform contains objects of type
// XEntity. PtOpenXmlUtil.cs defines the XEntity class. See
// http://blogs.msdn.com/ericwhite/archive/2010/01/21/writing-entity-references-using-linq-to-xml.aspx
// for detailed explanation.
//
// If you further transform the XML tree returned by ConvertToHtmlTransform, you
// must do it correctly, or entities do not serialize properly.
File.WriteAllText("Test.html", html.ToStringNewLineOnAttributes());
}
}
答案 0 :(得分:0)
你错过了命名空间,试试这个:
XNamespace w = "http://www.w3.org/1999/xhtml";
var head = html.Element(w + "head");