读取EXCEl文件数据，组装成sql语句对数据库执行更新操作-Read EXCEl file data, assembled into a sql statement to perform the update operation on the database

我经常接触到一些csv格式存储的数据文件，把这些文件导入数据库，或者把数据库的数据导出成为excel文件或者csv文件。-I often come into contact with some of the data stored in csv format file, these files into a database, or export the data into the database, excel file or csv file.

excel的导入与导出，实现将数据库的数据一条条导入到excel里-c# lead database into excel

如何把查询数据库的结果写入文本文件或excel文件或xml中-How to write the search result into excel file.