As I understand it - the shortest way is to convert file to XML. That would then allow to find the table by tag.
var fileinfo = new FileInfo(@"c:\Users\a1oleg\Desktop\myFile.docx");
XDocument xml = null;
using (StreamReader oReader = new StreamReader(fileinfo.FullName)
{
xml = XDocument.Load(oReader);
}
The error is:
System.Xml.XmlException: 'Data at the root level is invalid. Line 1, position 1.'