using (FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read))
                    using (StreamReader reader = new StreamReader(fileStream, Encoding.GetEncoding("GB2312")))
                    using (var matchCsv = new CsvReader(reader))
                    {
                       do something
　　　　　　　　　　　　}

转自：https://www.cnblogs.com/coky/p/6897282.html