一个C# 操作excel的例子，可以使用 T-sql 语句 查询汇总 excel里面的数据-Operation of a C# example of excel, you can use T-sql statement summary query data inside excel

VC动态访问excel，利用excel作数据存储，写入与读出数据，发放于VC控件上面显示出来(VC visit Excel and use excel to store the data, read and write the data, issue the data out to the VC text field and show them.)