以XPathDocument格式输出的XslCompiledTransform

Question

我正在尝试使用XslCompiledTransform，并将输出用作XPathDocument。

有什么想法吗？

Answer 1

将转换发送到基于StringWriter的XmlTextWriter。然后通过从StringWriter检索XML字符串来实例化XPathDocument。

var sw = new StringWriter();
var xtw = new XmlTextWriter(sw);

myTransform.Transform(myXml, xtw);

var xpd = new XPathDocument(sw.ToString());

它不是内存效率最高的机制，但足以满足大多数需求。一种类似的方法是使用MemoryStream而不是StringWriter，但相比较而言，这有点混乱。

Answer 2

琼斯先生的回答对我很有帮助，但我发现最后一行不起作用。我最终这样做了：

XslCompiledTransform xsl = new XslCompiledTransform();
xsl.Load(filePath);
StringWriter stringWriter = new StringWriter();
XmlWriter xmlWriter = XmlTextWriter.Create(stringWriter);
xsl.Transform(xPathDoc, xmlWriter);
String newXml = stringWriter.ToString();
StringReader stringReader = new StringReader(newXml);
xPathDoc = new XPathDocument(stringReader);

(这里，xPathDoc是已经从XmlReader初始化的XPathDocument。)

Answer 3

David M.Anderson的答案稍微好一点:它不会受到潜在的资源泄漏的影响；否则它是一样的。

private static XPathDocument TransformToXPathDocument(string styleSheetPath,
                                                      IXPathNavigable xPathDoc)
{
    var xsl = new XslCompiledTransform();
    xsl.Load(styleSheetPath);
    using(var stringWriter = new StringWriter())
    {
        using(XmlWriter xmlWriter = XmlWriter.Create(stringWriter))
        {
            xsl.Transform(xPathDoc, xmlWriter);
        }
        using(var reader = new StringReader(stringWriter.ToString()))
        {
            return new XPathDocument(reader);
        }
    }
}