Question

I was looking at the solution suggested here:
C# Excel Interop: Opening and Showing CSV file

excel.Workbooks.OpenText(filename, 
                         DataType: Excel.XlTextParsingType.xlDelimited, 
                         TextQualifier: Excel.XlTextQualifier.xlTextQualifierNone,
                         ConsecutiveDelimiter: true,
                         Semicolon: true);

This code opens the CSV file but does not split the data on the semicolon.

If I open the file manually in Excel and use the same options as specified here it works just fine, so I must be missing something.

Any suggestions?

Update: Part of the CSV

> Betalings Enveloppe;;;;Dossier;ACME ;;;;Dagboek;;F4 - AAA
> 46846846-;;; ;;;;Rekening;54654684684684;;;;BIC;;null;;; ;;;;Betaal
> datum;Fri Mar 16 00:00:00 CET 2012;;;;EnveloppeId;;0002;;;
> Document;;Datum;Rekeningnummer;;;;BIC;Referentie;;Leverancier;;;Bedrag;
> 2012/A1/268;;29/02/2012;BE94684684684128;;;;BBRUBEBB;BLUB ;;DOKTER WHO
> ;;;28.0 ?;

Answer 1

I think the extension is your problem. I tried the following code with both CSV and TXT extensions, it worked as a TXT, but not as a CSV.

using Excel = Microsoft.Office.Interop.Excel;
using Word = Microsoft.Office.Interop.Word;
public class ExcelInteropTest
{
    //private static Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
    public static void Parse(String filename)
    {
        var _app = new Excel.Application();
        var _workbooks = _app.Workbooks;

        _workbooks.OpenText(filename,
                                 DataType: Excel.XlTextParsingType.xlDelimited,
                                 TextQualifier: Excel.XlTextQualifier.xlTextQualifierNone,
                                 ConsecutiveDelimiter: true,
                                 Semicolon: true);

        Excel.Sheets sheets = _workbooks[1].Worksheets;
        Excel.Worksheet worksheet = (Excel.Worksheet)sheets.get_Item(1);

        List<String[]> excelData = new List<string[]>();
        for (int i = 1; i <= 6; i++)
        {
            Excel.Range range = worksheet.get_Range("A" + i.ToString(), "Z" + i.ToString());
            System.Array myvalues = (System.Array)range.Cells.Value;
            string[] strArray = myvalues.OfType<object>().Select(o => o.ToString()).ToArray();
            excelData.Add(strArray);
        }

        foreach (var item in excelData)
        {
            Console.WriteLine(String.Join("|",item));
        }

    }

}

All I did was create a string array for each row and add it to a list, then I just wrote each array (joined on the pipe ‘|’, and it looks like it split everything correctly when TXT was the extension. I would guess that the special nature CSV files have in excel might be causing the problem