Error in converting Excel data to CSV using C# code

Question

I am using this question to convert Excel data to CSV.

   static void ConvertExcelToCsv(string excelFilePath, string csvOutputFile, int worksheetNumber = 1) 
    {
   var cnnStr = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=\"Excel 8.0;IMEX=1;HDR=NO\"", excelFilePath);
   var cnn = new OleDbConnection(cnnStr);
   var dt = new DataTable();
  try {
  cnn.Open();
       }   
     }

I am getting the following exception once the cnn.open() line gets executed:

"External table is not in expected format"

Answer 1

The question in the link is old and using Excel 8.0 Spreadsheet version as Octopoid stated. You can try with the version 12.0 or figure out which version you use :

var cnnStr = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};" + "Extended Properties='Excel 12.0 Xml;HDR=YES;'");

If you can't manage to make it work, you can always use a library :>

Library is called "excellibrary"
Here is the link : https://code.google.com/p/excellibrary/

It is pretty simple to use it. It has a Wiki in the given link so you can get familiar with the usage.

Oğuzhan

Answer 2

嗨，您可以打开.xls文件，然后使用C＃将其另存为.csv