How to identify a necessary table located in DOCX via OpenXML SDK?

I have 5 tables in  a DOCX file. The file may be modified by end user via moving one of this table to the end of the file. My question is whether its possible to attach a kind of name to the table in initial version of the file or not? If it's possible, I'd like to know how to mark this table.

While creating the table you can give a name(or caption) for the table using TableProperties.

If you have done this, you can get this table using the following code.

using WordP = DocumentFormat.OpenXml.Wordprocessing;
........ 
........ 

   List<WordP.Table> tables = null;

 
            using (WordprocessingDocument wordDoc = WordprocessingDocument.Open("sample.docx", true))
            {
                tables = new List<WordP.Table>(wordDoc.MainDocumentPart.Document.Body.Elements<WordP.Table>());
                tables.ForEach(table =>                 
                {
                    WordP.TableProperties tblProperties = table.GetFirstChild<WordP.TableProperties>();
                    if (tblProperties != null) 
                    {
                        WordP.TableCaption caption = tblProperties.GetFirstChild<WordP.TableCaption>();
                        if (caption != null) 
                        {
                            if (caption.Val.HasValue && caption.Val.Value.Equals("Table2Cross3"))                            
                            {
                                // you have got your table. process the rest.
                            }
                        }
                    }
                });
            }
..........

I have shared the solution. Please have a look and let me know if you face any problem.

its working, good job