From Excel to DataTable in C# with Open XML

Question

I\'m using Visual Studio 2008 and I need create a DataTable from a Excel Sheet using the Open XML SDK 2.0. I need to create it with the DataTable columns with t

Answer 1

First Add ExcelUtility.cs to your project :

ExcelUtility.cs

using System.Data;
using System.Linq;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;

namespace Core_Excel.Utilities
{
    static class ExcelUtility
    {
        public static DataTable Read(string path)
        {
            var dt = new DataTable();

            using (var ssDoc = SpreadsheetDocument.Open(path, false))
            {
                var sheets = ssDoc.WorkbookPart.Workbook.GetFirstChild().Elements();
                var relationshipId = sheets.First().Id.Value;
                var worksheetPart = (WorksheetPart) ssDoc.WorkbookPart.GetPartById(relationshipId);
                var workSheet = worksheetPart.Worksheet;
                var sheetData = workSheet.GetFirstChild();
                var rows = sheetData.Descendants().ToList();

                foreach (var row in rows) //this will also include your header row...
                {
                    var tempRow = dt.NewRow();

                    var colCount = row.Descendants().Count();
                    foreach (var cell in row.Descendants())
                    {
                        var index = GetIndex(cell.CellReference);

                        // Add Columns
                        for (var i = dt.Columns.Count; i <= index; i++)
                            dt.Columns.Add();

                        tempRow[index] = GetCellValue(ssDoc, cell);
                    }

                    dt.Rows.Add(tempRow);
                }
            }

            var m = dt.Rows[0][9];

            return dt;
        }

        private static string GetCellValue(SpreadsheetDocument document, Cell cell)
        {
            var stringTablePart = document.WorkbookPart.SharedStringTablePart;
            var value = cell.CellValue.InnerXml;

            if (cell.DataType != null && cell.DataType.Value == CellValues.SharedString)
                return stringTablePart.SharedStringTable.ChildElements[int.Parse(value)].InnerText;

            return value;
        }

        public static int GetIndex(string name)
        {
            if (string.IsNullOrWhiteSpace(name))
                return -1;

            int index = 0;
            foreach (var ch in name)
            {
                if (char.IsLetter(ch))
                {
                    int value = ch - 'A' + 1;
                    index = value + index * 26;
                }
                else
                    break;
            }

            return index - 1;
        }
    }
}

Usage :

var path = "D:\\Documents\\test.xlsx";
var dt = ExcelUtility.Read(path);

then enjoy it!