csharp:OpenXml SDK 2.0 and ClosedXML read excel file

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DocumentFormat.OpenXml;//2.0 OpenXml SDK 2.0 2.5 2.6
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
using System.IO.Packaging;
using System.IO;
using System.Xml;
using ClosedXML.Excel; //http://closedxml.codeplex.com/  3.5 and 4.0 .net  framework 

  string filename = "20160816000.xlsx";//220160815  //Book1 涂聚文测试注:这两个文件的工作内容一样  2016081600011.xlsx 此文件21KB  20160816000.xlsx  此文件容量19.1M 不规则并有隐藏列,出现读取列问题,只能用System.Data.OleDb.OleDbConnection
        string sheename = "";
        /// <summary>
        /// 
        /// </summary>
        public OpenXmlSdkForm()
        {
            InitializeComponent();
        }
        /// <summary>
        ///  http://closedxml.codeplex.com/ 
        /// </summary>
        /// <param name="dt"></param>
        /// <param name="fileName"></param>
        public void ExportDataToExcel(DataTable dt, string fileName)
        {
            using (XLWorkbook wb = new XLWorkbook())
            {

                var ws = wb.Worksheets.Add(dt, "ws");  // worksheets name must be added. 
                wb.Style.Alignment.Horizontal = XLAlignmentHorizontalValues.Center;
                wb.Style.Font.Bold = true;

                //set header style
                ws.Rows(1, 1).Style.Fill.BackgroundColor = XLColor.White;
                ws.Rows(1, 1).Style.Font.Bold = true;
                ws.Rows(1, 1).Style.Font.FontColor = XLColor.Onyx;
                ws.Columns().Width = 20;

                //remove AutoFilter
                ws.Tables.FirstOrDefault().ShowAutoFilter = false;
                // winform 用法
                wb.SaveAs(filename);
                //webform 用法
                //Response.Clear();
                //Response.Buffer = true;
                //Response.Charset = "utf-8";
                //Response.ContentType = "application/vnd.ms-excel";
                //Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx");

                //using (MemoryStream MyMemoryStream = new MemoryStream())
                //{
                //    wb.SaveAs(MyMemoryStream);
                //    MyMemoryStream.WriteTo(Response.OutputStream);
                //    Response.Flush();
                //    Response.End();
                //}
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="filePath"></param>
        public void ImportExcel(string filePath,string sheetnaem)
        {
            //Open the Excel file using ClosedXML.
            using (XLWorkbook workBook = new XLWorkbook(filePath))
            {
                //Read the first Sheet from Excel file.
                IXLWorksheet workSheet = workBook.Worksheet(sheetnaem);//sheetid

                //Create a new DataTable.
                DataTable dt = new DataTable();

                //Loop through the Worksheet rows.
                bool firstRow = true;
                foreach (IXLRow row in workSheet.Rows())
                {
                    //Use the first row to add columns to DataTable.
                    if (firstRow)
                    {
                        foreach (IXLCell cell in row.Cells())
                        {
                            dt.Columns.Add(cell.Value.ToString());
                        }
                        firstRow = false;
                    }
                    else
                    {
                        //Add rows to DataTable.
                        dt.Rows.Add();
                        int i = 0;
                        foreach (IXLCell cell in row.Cells())
                        {
                            dt.Rows[dt.Rows.Count - 1][i] = cell.Value.ToString();
                            i++;
                        }
                    }

                    dataGridView1.DataSource = dt;
                    
                }
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OpenXmlSdkForm_Load(object sender, EventArgs e)
        {
            getCombox(filename, comboBox1);

            ImportExcel(filename,this.comboBox1.SelectedValue.ToString());

        }

  /// <summary>
        /// 涂聚文//hide column C
        /// s.SetColumnHidden(2,true); https://msdn.microsoft.com/en-us/library/office/ff956189(v=office.14).aspx
         ///  //hide IRow 2
        ///    r2.ZeroHeight = true;
        /// 否隐藏（isColumnHidden）
        /// 20150820
        /// 七夕节 涂聚文注: 隐瞒列读不出来
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <param name="sheetName">工作表名</param>
        /// <returns></returns>
        public static DataTable ReadIdDataTable(string fileName, string sheetName)
        {

            DataTable dataTable = new DataTable();
            try
            {
                using (SpreadsheetDocument spreadSheetDocument = SpreadsheetDocument.Open(fileName, false))
                {
                    WorkbookPart workbookPart = spreadSheetDocument.WorkbookPart;

                   // spreadSheetDocument.WorkbookPart.Workbook.CalculationProperties.ForceFullCalculation = true;
                   // spreadSheetDocument.WorkbookPart.Workbook.CalculationProperties.FullCalculationOnLoad = true;

                    //spreadSheetDocument.WorkbookPart.Workbook.Sheets;
                    Sheet theSheet = workbookPart.Workbook.Descendants<Sheet>().Where(s => s.Name == sheetName).FirstOrDefault();

                    //IEnumerable<Sheet> sheets = spreadSheetDocument.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>();//第一个工作表
                    //string relationshipId = theSheet.FirstOrDefault().ExtendedAttributes.ElementAt(0); //工作表
                    // numID = sheets.Count();
                    WorksheetPart worksheetPart = (WorksheetPart)spreadSheetDocument.WorkbookPart.GetPartById(theSheet.Id);//第一个工作表 

                    Worksheet workSheet = worksheetPart.Worksheet;
                    SheetData sheetData = workSheet.GetFirstChild<SheetData>();
                    //IEnumerable<Row> rows = sheetData.Descendants<Row>();
                    IEnumerable<Row> rows = sheetData.Descendants<Row>(); //

                    //
                   // var list = sheetData.Descendants<Row>().Where((r) => r.Hidden != null && r.Hidden.Value).Select(r => r.RowIndex.Value).ToList<uint>();

                    //
                    //foreach (Cell cell in rows.ElementAt(0))
                    //{
                    //    dataTable.Columns.Add(GetCellValue(spreadSheetDocument, cell)); //标题
                    //}
                    for (int j = 0; j < 59; j++)
                    {
                        dataTable.Columns.Add(j.ToString(), typeof(string));
                    }
                    foreach (Row row in rows)
                    {
                        DataRow dataRow = dataTable.NewRow();
                        //隐藏的列未显示
                        //for (int i = 0; i < row.Descendants<Cell>().Count(); i++)
                        //{
                        //    dataRow[i] = GetCellValue(spreadSheetDocument, row.Descendants<Cell>().ElementAt(i));
                        //}
                        for (int i = 0; i < row.Descendants<Cell>().Count(); i++)
                        {
                          
                            //if (row.Hidden == true)
                            //{
                            //    dataRow[i] = GetCellValue(spreadSheetDocument, row.Descendants<Cell>().ElementAt(i));
                            //}
                            //else
                            //{

                            dataRow[i] = GetCellValue(spreadSheetDocument, row.Descendants<Cell>().ElementAt(i));
                            
                            //}
                        }

                        //row.getZeroHeight()

                        dataTable.Rows.Add(dataRow);
                    }

                }
                dataTable.Rows.RemoveAt(0);
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
            return dataTable;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="FileName"></param>
        /// <param name="columnNumber"></param>
        public void HideColumn(string FileName, UInt32Value columnNumber)
        {
            using (SpreadsheetDocument document = SpreadsheetDocument.Open(
                FileName, true))
            {
                IEnumerable<Sheet> sheets = document.WorkbookPart.Workbook.Descendants<Sheet>().Where(s => s.Name == "Sheet1");
                if (sheets.Count() == 0)
                {
                    // The specified worksheet does not exist.
                    return;
                }
                WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(sheets.First().Id);
                Worksheet worksheet = worksheetPart.Worksheet;
                Columns columns1 = GenerateColumns(columnNumber);
                // The column element is behind the SheetFormatProperties element.
                worksheet.InsertAfter(columns1, worksheet.SheetFormatProperties);
                worksheet.Save();
            }
        }
        // Creates an Columns instance and adds its children.
        public Columns GenerateColumns(UInt32Value ColumnIndex)
        {
            Columns columns1 = new Columns();
            Column column1 = new Column() { Min = ColumnIndex, Max = ColumnIndex, Width = 0D, Hidden = true, CustomWidth = true };
            columns1.Append(column1);
            return columns1;
        }
            /// <summary>
            /// Reads the specified file save path.
            /// </summary>
            /// <param name="fileSavePath">The file save path.</param>
            /// <returns></returns>
            public DataSet Read(string fileSavePath)
            {

                    DataSet resultSet = new DataSet();

                    using (SpreadsheetDocument spreadSheetDocument = SpreadsheetDocument.Open(fileSavePath, false))
                    {

                    WorkbookPart workbookPart = spreadSheetDocument.WorkbookPart;
                    IEnumerable<Sheet> sheets = spreadSheetDocument.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>();

                    foreach (Sheet sheet in sheets)
                    {
                    DataTable dt = new DataTable();

                    string relationshipId = sheet.Id.Value;
                    string sheetName = sheet.SheetId;
                    dt.TableName = sheet.SheetId;

                    WorksheetPart worksheetPart =
                    (WorksheetPart) spreadSheetDocument.WorkbookPart.GetPartById(relationshipId);
                    Worksheet workSheet = worksheetPart.Worksheet;
                    SheetData sheetData = workSheet.GetFirstChild<SheetData>();
                    IEnumerable<Row> rows = sheetData.Descendants<Row>();

                    foreach (Cell cell in rows.ElementAt(0))
                    {
                    dt.Columns.Add(GetCellValue(spreadSheetDocument, cell));
                    }

                    List<Row> rowsList = new List<Row>();

                    rowsList = rows.ToList();

                    //Start from 1, first row is header.
                    for ( int iterRowIndex = 1 ; iterRowIndex < rowsList.Count ; iterRowIndex ++) //this will also include your header row…
                    {
                    Row row = rowsList[iterRowIndex];

                    DataRow tempRow = dt.NewRow();

                    for (int i = 0; i < row.Descendants<Cell>().Count(); i++)
                    {
                    tempRow[i] = GetCellValue(spreadSheetDocument, row.Descendants<Cell>().ElementAt(i));
                    }

                    dt.Rows.Add(tempRow);
                    }

                    resultSet.Tables.Add(dt);
                    }

                    }

                    return resultSet;
            }


        /// <summary>
        ///
        /// </summary>
        /// <param name="document"></param>
        /// <param name="cell"></param>
        /// <returns></returns>
        private static string GetCellValue(SpreadsheetDocument document, Cell cell)
        {
            //try
            //{
                SharedStringTablePart stringTablePart = document.WorkbookPart.SharedStringTablePart;
                string value = cell.CellValue.InnerXml;

                if (cell.DataType != null && cell.DataType.Value == CellValues.SharedString)
                {
                    return stringTablePart.SharedStringTable.ChildElements[Int32.Parse(value)].InnerText;
                }
                else
                {
                    return value;
                }
              ///
              //if (cell.ChildElements.Count == 0)
              //  return null;
            //get cell value
            //String value = cell.CellValue.InnerText;
            ////Look up real value from shared string table
            //if ((cell.DataType != null) && (cell.DataType == CellValues.SharedString))
            //    value = stringTablePart.SharedStringTable
            //    .ChildElements[Int32.Parse(value)]
            //    .InnerText;
            //return value;
      
            //}
            //catch (Exception ex)
            //{
            //    ex.Message.ToString();
            //    return "";
            //}
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="fileName"></param>
        static void read2(string fileName)
        {
            using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            {
                using (SpreadsheetDocument doc = SpreadsheetDocument.Open(fs, false))
                {
                    WorkbookPart workbookPart = doc.WorkbookPart;
                    SharedStringTablePart sstpart = workbookPart.GetPartsOfType<SharedStringTablePart>().First();
                    SharedStringTable sst = sstpart.SharedStringTable;

                    WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();
                    Worksheet sheet = worksheetPart.Worksheet;

                    var cells = sheet.Descendants<Cell>();
                    var rows = sheet.Descendants<Row>();

                  MessageBox.Show(string.Format("Row count = {0}", rows.Count())); //LongCount
                  MessageBox.Show(string.Format("Cell count = {0}", cells.Count()));//LongCount

                    // One way: go through each cell in the sheet
                    foreach (Cell cell in cells)
                    {
                        if ((cell.DataType != null) && (cell.DataType == CellValues.SharedString))
                        {
                            int ssid = int.Parse(cell.CellValue.Text);
                            string str = sst.ChildElements[ssid].InnerText;
                            string.Format("Shared string {0}: {1}", ssid, str);
                        }
                        else if (cell.CellValue != null)
                        {
                            string.Format("Cell contents: {0}", cell.CellValue.Text);
                        }
                    }

                    // Or... via each row
                    foreach (Row row in rows)
                    {
                        foreach (Cell c in row.Elements<Cell>())
                        {
                            if ((c.DataType != null) && (c.DataType == CellValues.SharedString))
                            {
                                int ssid = int.Parse(c.CellValue.Text);
                                string str = sst.ChildElements[ssid].InnerText;
                                string.Format("Shared string {0}: {1}", ssid, str);
                            }
                            else if (c.CellValue != null)
                            {
                                string.Format("Cell contents: {0}", c.CellValue.Text);
                            }
                        }
                    }
                }
            }
        }


 /// <summary>
        /// 
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="combox"></param>
        /// <returns></returns>
        public static DataTable getCombox(string filename, ComboBox combox)
        {

            DataTable dt = new DataTable();
            List<SheetNameInfo> sheetinfo = new List<SheetNameInfo>();
            sheetinfo = GetSheets(filename);
            combox.DataSource = sheetinfo;
            combox.ValueMember = "SheetName";
            combox.DisplayMember = "SheetName";
            //dt=ReadIdDataTable(filename, sheetinfo[0].SheetName);
            return dt;

        }
        /// <summary>
        /// 读取工作表名 涂聚文注
        /// EXCEL 2007版以上
        /// </summary>
        /// <param name="strFileName"></param>
        /// <returns></returns>
        public static List<SheetNameInfo> GetSheets(String strFileName)
        {
            string id = string.Empty;
            //  Fill this collection with a list of all the sheets.
            List<SheetNameInfo> sheets = new List<SheetNameInfo>();
            using (SpreadsheetDocument xlPackage = SpreadsheetDocument.Open(strFileName, false))
            {

                WorkbookPart workbook = xlPackage.WorkbookPart;
                Stream workbookstr = workbook.GetStream();
                XmlDocument doc = new XmlDocument();
                doc.Load(workbookstr);
                XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);
                nsManager.AddNamespace("default", doc.DocumentElement.NamespaceURI);
                XmlNodeList nodelist = doc.SelectNodes("//default:sheets/default:sheet", nsManager);
                int k = 0;
                foreach (XmlNode node in nodelist)
                {
                    SheetNameInfo sheetNameInfo = new SheetNameInfo();
                    String sheetName = String.Empty;
                    sheetName = node.Attributes["name"].Value;
                    // id = node.Attributes["id"].Value;
                    sheetNameInfo.SheetID = int.Parse(node.Attributes["sheetId"].Value.ToString());
                    sheetNameInfo.Rid = node.Attributes["r:id"].Value;
                    sheetNameInfo.SheetName = sheetName;
                    sheets.Add(sheetNameInfo);
                    k++;
                }
            }
            return sheets;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="strFileName"></param>
        /// <returns></returns>
        public static List<String> GetStringSheets(String strFileName)
        {

            //  Fill this collection with a list of all the sheets.

            List<String> sheets = new List<String>();



            using (SpreadsheetDocument xlPackage = SpreadsheetDocument.Open(strFileName, false))
            {

                WorkbookPart workbook = xlPackage.WorkbookPart;

                Stream workbookstr = workbook.GetStream();

                XmlDocument doc = new XmlDocument();

                doc.Load(workbookstr);



                XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);

                nsManager.AddNamespace("default", doc.DocumentElement.NamespaceURI);

                XmlNodeList nodelist = doc.SelectNodes("//default:sheets/default:sheet", nsManager);
                foreach (XmlNode node in nodelist)
                {

                    String sheetName = String.Empty;

                    sheetName = node.Attributes["name"].Value;

                    sheets.Add(sheetName);

                }

            }
            return sheets;

        }

    /// <summary>
    ///读取工作表名
    /// </summary>
    public class SheetNameInfo
    {
        private int _sheetId;
        private string _sheetName;

        private string _rid;

        /// <summary>
        ///
        /// </summary>
        public int SheetID
        {
            get { return _sheetId; }
            set { _sheetId = value; }
        }
        /// <summary>
        ///
        /// </summary>
        public string SheetName
        {
            get { return _sheetName; }
            set { _sheetName = value; }
        }
        /// <summary>
        ///
        /// </summary>
        public string Rid
        {
            get { return _rid; }
            set { _rid = value; }
        }
    }