Export xls data to datatable without using Microsoft.Interop

I currenlty have an application which exports data from an cls file to a datatable using Microsoft.Interop dll.
This requires Excel installed on any server this application is installed.
How can I export data from an xls file without using Microsoft.Interop dlls

public static void LoadFile(string filePath, string type)
        {
            Microsoft.Office.Interop.Excel.Application appExcel;
            Microsoft.Office.Interop.Excel.Workbook workbook;
            Microsoft.Office.Interop.Excel.Range range;
            Microsoft.Office.Interop.Excel._Worksheet worksheet;
         
                appExcel = new Microsoft.Office.Interop.Excel.Application();
                workbook = appExcel.Workbooks.Open(filePath, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
                worksheet = (Microsoft.Office.Interop.Excel._Worksheet)workbook.Sheets[1];
                range = worksheet.UsedRange;

                int rowCount = range.Rows.Count;
                int colCount = range.Columns.Count;
                System.Data.DataTable dt    = GetDataTable();
                System.Data.DataTable dtSpy = GetSPYDataTable();
                string strHoldingDate = (range.Cells[3, 2]).Value2.ToString();
                strHoldingDate = strHoldingDate.Replace("As of ", string.Empty);
                DateTime holdingDate = Convert.ToDateTime(strHoldingDate);
                try
                {
                    for (int Rnum = 5; Rnum <= rowCount; Rnum++)
                    {
                       // do something
                        dt.Rows.Add(drt);
                       
                       
                    }
                    dt.AcceptChanges();
                    workbook.Close(true);
                    appExcel.Quit();
                    DBManager.SaveData(dt);
             
                }
                catch (Exception ex)
                {

                    string message = ex.Message;
                }
                       

        }
LVL 1
countrymeisterAsked:
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Snarf0001Commented:
Any chance you can limit the files to xlsx (2007+ format)?
If so, then look at epplus:
http://epplus.codeplex.com/

Works very well, no interop.
0
käµfm³d 👽Commented:
I haven't used it myself, but you might try using this library:

https://github.com/ExcelDataReader/ExcelDataReader

It is available in NuGet. It claims to only handle 1997 - 2007 Excel files, though. It does not appear to depend on the Interop libraries.
0
Fernando SotoRetiredCommented:
Hi countrymeister;

You could also use a NuGet package called linqtoexcel which allows you to use Linq to Excel query to load and extra data and fill your DataTable You can get more information at GitHub Welcome to the LinqToExcel project
0

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