读取Csv文件编码错误

    /// <summary>
    /// Reads data from a CSV file to a datatable
    /// </summary>
    /// <param name="filePath">Path to the CSV file</param>
    /// <returns>Datatable filled with data read from the CSV file</returns>
    public DataTable ReadCsv(string filePath)
    {
        if (string.IsNullOrEmpty(filePath))
        {
            log.Error("Invalid CSV file name.");
            return null;
        }

        try
        {
            DataTable dt = new DataTable();

            string folder = FileMngr.Instance.ExtractFileDir(filePath);
            string fileName = FileMngr.Instance.ExtractFileName(filePath);
            string connectionString = 
            string.Concat(@"Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=",
            folder, ";");

            using (OdbcConnection conn = 
                   new System.Data.Odbc.OdbcConnection(connectionString))
            {
                string selectCommand = string.Concat("select * from [", fileName, "]");
                using (OdbcDataAdapter da = new OdbcDataAdapter(selectCommand, conn))
                {
                    da.Fill(dt);
                }
            }

            return dt;
        }
        catch (Exception ex)
        {
            log.Error("Error loading CSV content", ex);
            return null;
        }
    }

如果我有一个 使用 schema.ini 看起来是这样的:

[Example.csv]
Format=Delimited(,)
ColNameHeader=True
MaxScanRows=2
CharacterSet=ANSI

我可以对上述方法进行哪些修改以阅读 统一码