HashTable实例 public class HashTable_msg { public HashTable_msg() { String sum_sql="select mobilenum,count(*) from SJSJ_Msg where (left(in_date,6)=(select left(CONVERT(varchar(12) , getdate(), 112 ),6)))group by mobilenum" Hashtable<

C#访问数据库通用类，带参数据查询、SQL运行、存储过程调用，支持事务封装。-C# access sqlserver class ,suport trans