在这里获取XElement的行号

Question

XDocument xdoc = XDocument.Load(file);
IEnumerable<XElement> categories = xdoc.Descendants("Category");
foreach (XElement category in categories)
{
    //get line number for element here...
}

Answer 1

XElement(实际上XObject)实现了IXmlLineInfo接口,所以你可以使用它:

IXmlLineInfo info = category;
int lineNumber = info.LineNumber;

请注意,行信息并不总是可用,您需要调用该HasLineInfo方法来检查信息是否可用.您可以指定LoadOptions.SetLineInfo何时加载文档XDocument.Load

Answer 2

XDocument xdoc = XDocument.Load(file, LoadOptions.SetLineInfo);
IEnumerable<XElement> categories = xdoc.Descendants("Category");
foreach (XElement category in categories)
{
    //get line number for element here...
    string lineNumber = ((IXmlLineInfo)category).HasLineInfo() ? ((IXmlLineInfo)category).LineNumber : -1;
}