/// <summary>
/// Build the xml XPath from the element recursively.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="xpath">The result XPath.</param>
/// <param name="namespaces">The namespaces used in the XPath.</param>
internal static void BuildXPath(OpenXmlElement element, StringBuilder xpath, Dictionary <string, string> namespaces)
{
if (element.Parent != null)
{
BuildXPath(element.Parent, xpath, namespaces);
}
xpath.Append("/");
if (element is OpenXmlMiscNode)
{
xpath.Append(element.OuterXml);
}
else
{
Debug.Assert(!string.IsNullOrEmpty(element.LocalName));
if (!string.IsNullOrEmpty(element.Prefix))
{
if (!namespaces.ContainsKey(element.Prefix))
{
namespaces.Add(element.Prefix, element.NamespaceUri);
}
xpath.Append(element.Prefix);
xpath.Append(":");
}
else if (!string.IsNullOrEmpty(element.NamespaceUri))
{
xpath.Append(element.NamespaceUri);
xpath.Append(":");
}
xpath.Append(element.LocalName);
xpath.Append("[");
xpath.Append(element.GetXPathIndex());
xpath.Append("]");
}
}
