public static bool TryGetFirstElementValueByXPathNavigator(
XmlDocument xmlDocument,
string xpath,
PrefixedNamespace[] prefixedNamespaces,
out string value
)
{
DocumentXPathResolver.CheckParameters(xmlDocument, prefixedNamespaces);
bool result;
if (string.IsNullOrEmpty(xpath))
{
value = string.Empty;
result = true;
}
else
{
string[] lineIter = DocumentXPathResolver.GetXPathValues(xmlDocument, xpath, prefixedNamespaces);
int nodesCount = lineIter.Length;
if (nodesCount >= 1)
{
value = lineIter[0];
result = true;
}
else
{
value = string.Empty;
result = false;
}
}
return(result);
}
public static string GetElementValueByXPathNavigator(
XmlDocument xmlDocument,
string xpath,
PrefixedNamespace[] prefixedNamespaces
)
{
DocumentXPathResolver.CheckParameters(xmlDocument, prefixedNamespaces);
string result;
if (string.IsNullOrEmpty(xpath))
{
result = string.Empty;
}
else
{
string[] lineIter = DocumentXPathResolver.GetXPathValues(xmlDocument, xpath, prefixedNamespaces);
int nodesCount = lineIter.Length;
if (nodesCount < 1)
{
throw new NoXPathResultsException(xpath);
}
if (nodesCount > 1)
{
throw new TooManyXpathResultsException(xpath, nodesCount);
}
result = lineIter[0];
}
return(result);
}