三、
执行带参数的SQL语句
1、public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
执行多条SQL语句,实现数据库事务
2、public static void ExecuteSqlTran(Hashtable SQLStringList)
3、public static int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList)
4、public static void ExecuteSqlTranWithIndentity(System.Collections.Generic.List<CommandInfo> SQLStringList)
5、public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
执行一条计算查询结果语句,返回查询结果(object)
6、public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
执行查询语句,返回SqlDataReader ( 注意:调用该方法后,一定要对SqlDataReader进行Close )
7、public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
执行查询语句,返回DataSet
8、public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
经常被调用的一个方法
9、private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)