在此获取XElement的行号

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;}