OneNoteConversionTool.FormatReaders.EpubReader.GetOpfFilePath C# (CSharp) Method

		private string GetOpfFilePath()
		{
			string containerXmlPath = Path.Combine(_mEpubDir, "meta-inf\\container.xml");

			XmlDocument xDoc = new XmlDocument();
			xDoc.Load(containerXmlPath);

			XmlNode node = xDoc.SelectSingleNode("//*[@media-type = \"application/oebps-package+xml\"]");

			return node != null && node.Attributes != null && node.Attributes["full-path"] != null
				? Path.Combine(_mEpubDir, node.Attributes["full-path"].Value) 
				: String.Empty;
		}