https://stackoverflow.com/questions/21336769
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RussianIf you provide a tool to open excel file and translate it's content to html you must deal with calculation.
If the file is "well created", for example manually with Excel you can be sure you don't need to manage computation of the formulas cause excel does the trick and stores both the formula in CellFormula's child element and result in CellValue's child element (See the method GetValue_D11()). So basically you just need to show the result.. which always will be a String.
Unfortunately you have to deal with styles and dataTypes, if you want to mantain behaviour.
Actually you have to build a complex web based spreadsheet viewer/editor.
Here is a sample "fixed" (totally not dynamic for all) for retrieving String values and formula values. if you wanna run the test be sure to download that file (http://www.devnmore.com/share/Test.xlsx) otherwise it can't works.
ShowValuesSample svs = new ShowValuesSample("yourPath\\Test.xlsx");
String[] test = svs.GetDescriptions_A2A10();
Double grandTotal = svs.GetValue_D11();
ShowValuesSample class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DocumentFormat.OpenXml.Packaging;
using Ap = DocumentFormat.OpenXml.ExtendedProperties;
using Vt = DocumentFormat.OpenXml.VariantTypes;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Spreadsheet;
using A = DocumentFormat.OpenXml.Drawing;
using System.Globalization;
namespace TesterApp
{
public class ShowValuesSample
{
public String FileName { get; private set; }
private SpreadsheetDocument _ExcelDocument = null;
public SpreadsheetDocument ExcelDocument
{
get
{
if (_ExcelDocument == null)
{
_ExcelDocument = SpreadsheetDocument.Open(FileName, true);
}
return _ExcelDocument;
}
}
private SheetData _SheetDataOfTheFirstSheet = null;
public SheetData SheetDataOfTheFirstSheet
{
get
{
if (_SheetDataOfTheFirstSheet == null)
{
WorksheetPart shPart = ExcelDocument.WorkbookPart.WorksheetParts.ElementAt(0);
Worksheet wsh = shPart.Worksheet;
_SheetDataOfTheFirstSheet = wsh.Elements<SheetData>().ElementAt(0);
}
return _SheetDataOfTheFirstSheet;
}
}
private SharedStringTable _SharedStrings = null;
public SharedStringTable SharedStrings
{
get
{
if (_SharedStrings == null)
{
SharedStringTablePart shsPart = ExcelDocument.WorkbookPart.SharedStringTablePart;
_SharedStrings = shsPart.SharedStringTable;
}
return _SharedStrings;
}
}
public ShowValuesSample(String fileName)
{
FileName = fileName;
}
//In the file descriptions are stored as sharedString
//so cellValue it's the zeroBased index of the sharedStringTable
//in my example i saved 9 different values
//sharedstring it's a trick to reduce size of a file obiouvsly writing
//repetitive string just once
public String[] GetDescriptions_A2A10()
{
String[] retVal = new String[9];
for (int i = 0; i < retVal.Length; i++)
{
Row r = SheetDataOfTheFirstSheet.Elements<Row>().ElementAt(i + 1);
Cell c = r.Elements<Cell>().ElementAt(0);
Int32 shsIndex = Convert.ToInt32(c.CellValue.Text);
SharedStringItem shsItem = SharedStrings.Elements<SharedStringItem>().ElementAt(shsIndex);
retVal[i] = shsItem.Text.Text;
}
return retVal;
}
//The value it's stored beacause excel does
//To be sure it's correct you should perform all calculations
//In this case i'm sure Excel didn't stored the wrong value so..
public Double GetValue_D11()
{
Double retVal = 0.0d;
Int32 cellIndex = 0;
//cellIndex it's 0 and not 3, cause A11, B11, C11 are empty cells
//Another issue to deal with ;-)
Cell c = SheetDataOfTheFirstSheet.Elements<Row>().ElementAt(10).Elements<Cell>().ElementAt(cellIndex);
//as example take a look at the value of storedFormula
String storedFormula = c.CellFormula.Text;
String storedValue = c.CellValue.Text;
NumberFormatInfo provider = new NumberFormatInfo();
provider.NumberDecimalSeparator = ".";
provider.NumberGroupSeparator = ",";
provider.NumberGroupSizes = new Int32[] { 3 };
retVal = Convert.ToDouble(storedValue, provider);
return retVal;
}
}
}
