c# 数据保存为excel .csv



StringBuilder sbtitle = new StringBuilder();//明细存储
sbtitle.AppendLine($"1,2,3,4,5,6");//英文逗号间隔保存成csv扩展名 逗号前后分别装在2个单元格里
//输出流
StreamWriter sw = new StreamWriter($"明细.csv",true, Encoding.UTF8);//指定输出编码与文件名字
sw.WriteLine(sbtitle);
sw.Close()