I want to Read Multiple excel sheets in one file without using OLEDB in C#

Question

Im reading an Excel document from C# Windows Form.. There are 25 worksheets in Excel Workbook.. i can read 1st worksheet successfully.. But when i change it to worksheet 2.. it won't working at all.. Im not using OLEDB..

I want to read 100 Row in every sheet.. following is my code...

`       dt.Columns.Add("Amount", typeof(double));
        dt.Columns.Add("ChequeNo", typeof(int));
        dt.Columns.Add("month", typeof(int));


        int AmountRow = 100;
        int ChequeNoRow = 101;
        int Column = 3;

        xlApp = new Excel.ApplicationClass();
        xlWorkBook = xlApp.Workbooks.Open(path, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
        xlWorkSheet = (Excel.Worksheet)xlWorkBook.Sheets[2];\\This place is the changing worksheets

        range = xlWorkSheet.UsedRange;

        double chequeAmount;
        double chequeNo;

        for (int i = Column; i < 15; i++)
        {
            chequeAmount = (double)(range.Cells[AmountRow, i] as Excel.Range).Value2;
            chequeNo = (double)(range.Cells[ChequeNoRow, i] as Excel.Range).Value2;

            if (chequeNo != 0.0)
            {
                dt.Rows.Add(Convert.ToDouble(chequeAmount), Convert.ToInt32(chequeNo), i);
            }
        }

        dataGridView1.DataSource = dt;
        xlWorkBook.Close(true, null, null);
        xlApp.Quit();

        releaseObject(xlWorkSheet);
        releaseObject(xlWorkBook);
        releaseObject(xlApp);`

releaseObject methods are not here.. those working perfectly...

 `xlWorkSheet = (Excel.Worksheet)xlWorkBook.Sheets[1];`

This is how i change my worksheets.. The following line gives an exception..[Null point Exception]

chequeAmount = (double)(range.Cells[AmountRow, i] as Excel.Range).Value2;

Hope you'll know answers..

Answer 1

Try this instead:

xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets[2];

The Sheets property can include non-worksheet sheets, which could be the issue in your scenario.