open xml excel read cell value

Question

I am using the Open XML SDK to open an Excel xlsx file and I try to read the cellvalue on position A1 in each sheet. I use the following code:

using (Spreads         


        

Answer 1

Found this very usefull snippet quite a while ago, so can not meantion the author.

private static string GetCellValue(string fileName, string sheetName, string addressName)
    {
        string value = null;

        using(SpreadsheetDocument document =  SpreadsheetDocument.Open(fileName, false))
        {
            WorkbookPart wbPart = document.WorkbookPart;

            // Find the sheet with the supplied name, and then use that Sheet
            // object to retrieve a reference to the appropriate worksheet.
            Sheet theSheet = wbPart.Workbook.Descendants().
              Where(s => s.Name == sheetName).FirstOrDefault();

            if(theSheet == null)
            {
                throw new ArgumentException("sheetName");
            }

            // Retrieve a reference to the worksheet part, and then use its 
            // Worksheet property to get a reference to the cell whose 
            // address matches the address you supplied:
            WorksheetPart wsPart = (WorksheetPart)(wbPart.GetPartById(theSheet.Id));
            Cell theCell = wsPart.Worksheet.Descendants().
              Where(c => c.CellReference == addressName).FirstOrDefault();

            // If the cell does not exist, return an empty string:
            if(theCell != null)
            {
                value = theCell.InnerText;

                // If the cell represents a numeric value, you are done. 
                // For dates, this code returns the serialized value that 
                // represents the date. The code handles strings and Booleans
                // individually. For shared strings, the code looks up the 
                // corresponding value in the shared string table. For Booleans, 
                // the code converts the value into the words TRUE or FALSE.
                if(theCell.DataType != null)
                {
                    switch(theCell.DataType.Value)
                    {
                        case CellValues.SharedString:
                            // For shared strings, look up the value in the shared 
                            // strings table.
                            var stringTable = wbPart.
                              GetPartsOfType().FirstOrDefault();
                            // If the shared string table is missing, something is 
                            // wrong. Return the index that you found in the cell.
                            // Otherwise, look up the correct text in the table.
                            if(stringTable != null)
                            {
                                value = stringTable.SharedStringTable.
                                  ElementAt(int.Parse(value)).InnerText;
                            }
                            break;

                        case CellValues.Boolean:
                            switch(value)
                            {
                                case "0":
                                    value = "FALSE";
                                    break;
                                default:
                                    value = "TRUE";
                                    break;
                            }
                            break;
                    }
                }
            }
        }
        return value;
    }