Opening and reading a csv file created in any editor

Hi EEE:
I have a problem. I am loading a csv file to the database in .NET. By definition a csv file is a comma seperated file which can be created in a simple text editor like notepad or also in excel and saved as a csv. Now, when I read in the file (see code below) I will get the following error because the file is expected as an excel sheet. How can I make it generic to open a csv regardless of its file origin - text or excel.

Code:

                  // Read into dataset the first sheet of Excel
                  //
                  string connectionString;
                  string commandText;
                  System.Data.OleDb.OleDbConnection conn;
                  System.Data.OleDb.OleDbCommand command;


                  connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";
                  commandText = "select * from [sheet1$]";

                  conn = new System.Data.OleDb.OleDbConnection (connectionString);
                  command = new System.Data.OleDb.OleDbCommand (commandText, conn);

                  conn.Open ();

                  System.Data.OleDb.OleDbDataAdapter da = new System.Data.OleDb.OleDbDataAdapter (commandText, conn);
                  DataSet ds = new DataSet ();

                  da.Fill (ds, "FileData");

Error:

[OleDbException (0x80004005): External table is not in the expected format.]
   System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) +1059617
   System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +53
   System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +27
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +47
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
   System.Data.OleDb.OleDbConnection.Open() +37
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