public static string GetChildValue(XPathNavigator nav, string childPath) { string str = (string)null; XPathNavigator xpathNavigator = XPathNavUtil.SelectSingleChild(nav, childPath); if (xpathNavigator != null) { str = xpathNavigator.Value; } return(str); }
public static XPathNavigator SelectSingle( XPathNavigator nav, string XPath, string nodeValue) { if (nav == null) { throw new ArgumentNullException(nameof(nav)); } return(XPathNavUtil.FindNavigator(nav.Select(XPath), nodeValue)); }