前辈们，问个小问题。帮下忙，谢谢了

[waplei]

获得一个SqlDataReader数据集的方法 和 重载一个返回sqldatareader数据的方法
中 ，重载 和 获得 是什么意思，什么操作啊？

[繁花似锦剩下青春忧伤]

获得是读取数据。重载时重写sqldatareader方法、

[laj0600310219]

[Quote=引用 1 楼 boqian_shi 的回复:]
获得是读取数据。重载时重写sqldatareader方法、
[/Quote]顶

[别吵_我睡会儿先]

    public static SqlConnection con = new SqlConnection("连接数据库字符串");
        public SqlDataReader GetReader(string sql) 
        { 
            con.Open();
            SqlCommand com = new SqlCommand(sql,con);
            SqlDataReader reader = com.ExecuteReader();
            return reader;//读取完数据后，要关闭reader con
        }
        public SqlDataReader GetReader(string sql,SqlParameter [] param) 
        {
            con.Open();
            SqlCommand com = new SqlCommand(sql, con);
            com.Parameters.AddRange(param);
            SqlDataReader reader = com.ExecuteReader();
            return reader;//读取完数据后，要关闭reader con   
        }

[huangwenquan123]

    public void getSqlDataReader()
    {
        using (SqlConnection conn = new SqlConnection())
        {
            conn.ConnectionString = "...";
            string sql = "...";
            SqlCommand cmd = new SqlCommand(sql, conn);
            using (SqlDataReader dr = cmd.ExecuteReader())
            {
                while (dr.Read())
                { 
                    //...
                }
            }
        }
    }
    public SqlDataReader returnSqlDataReader(int id)
    {
        using (SqlConnection conn = new SqlConnection())
        {
            conn.ConnectionString = "...";
            string sql = "select * from table where id=" + id + "";
            SqlCommand cmd = new SqlCommand(sql, conn);
            return cmd.ExecuteReader();
        }
    }
    public SqlDataReader returnSqlDataReader(string name)
    {
        using (SqlConnection conn = new SqlConnection())
        {
            conn.ConnectionString = "...";
            string sql = "select * from table where name='" + name + "'";
            SqlCommand cmd = new SqlCommand(sql, conn);
            return cmd.ExecuteReader();
        }
    }