List<SqlParameter> ilist = new List<SqlParameter>();
ilist.Add(new SqlParameter("@Param1", "1"));
ilist.Add(new SqlParameter("@Param2", "2"));
ilist.Add(new SqlParameter("@Param3", "3"));
ilist.Add(new SqlParameter("@Param4", "4"));
ilist.Add(new SqlParameter("@ParamLike","%5%"));//Like的写法
SqlParameter[] param = ilist.ToArray();