正向写法:

string filter = "code like ‘%"+sheetname+"%‘";

filter值为: code like ‘%表F.3_1%‘

反向写法:

string  filter = "‘" + sheetname + "‘ like  ‘%‘+ code+‘%‘";

filter值为:  ‘表F.3_1‘ like ‘%‘+ code+‘%‘

DataTable反向模糊匹配查找语法