用C#实现将Excel导入DataGridView中，Excel中有一列是信息分类，总共八类，我想要只导入其中一类，要怎样筛选，求教各位大神，最好提供代码，谢谢！！
https://www.baidu.com/link?url=mxBr5S0v2nezMl9aR0uNGuHlLPErxzp3bhn5DoBRnGrA4KfyYbHkKSQRyuAeSCAIZqv-h6WFE2bteD_GGbJ31-yAvmMsIMOyc70FtPe2U33&wd=&eqid=f3e2e7b9000079bf00000005584c1a49
http://blog.csdn.net/jzz870519/article/details/5355799