看来问题很难一次说清，分开发。

[bulls5988]

现在输出的第一条记录的图片。
我要做图片循环，timer运行的时候，如果后面还有记录就依次输出下面记录的图片和文字（第一条，第二条...第N-1条）应该怎么做？

 private void timer1_Tick(object sender, EventArgs e)
        {
            string sql_str = "select * from cj_main";
            SqlConnection conn = new SqlConnection(conn_str);
            SqlCommand command = new SqlCommand(sql_str, conn);
            conn.Open();
            SqlDataReader rs = command.ExecuteReader();
            if (rs.Read())
            {
                cj_names = rs[1].ToString();
                cj_pic_path=rs[3].ToString();
                this.pictureBox1.Image=Image.FromFile(cj_pic_path);               
            }

[wuyq11]

List<T> 保存image
random随机数
Random rand = new Random(Guid.NewGuid().GetHashCode());
rand.Next(1,lst.Count)
lst[i]

[bulls5988]

没明白,你是说先把所有记录读进一个imagelist??

[bulls5988]

private void timer1_Tick(object sender, EventArgs e)
        {
            string sql_str = "select * from cj_main";
            SqlConnection conn = new SqlConnection(conn_str);
            SqlCommand command = new SqlCommand(sql_str, conn);
            conn.Open();
            SqlDataReader rs = command.ExecuteReader();
            if (rs.Read())
            {
                cj_names = rs[1].ToString();
                cj_pic_path = rs[3].ToString();
                List<Image> lst = new List<Image>();
                lst.Add(Image.FromFile(cj_pic_path));
                if (i >= lst.Count)
                {
                    i = 0;
                }
                else
                {
                    this.pictureBox1.Image = lst[i];
                    pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
                    i = i + 1;
                    this.pictureBox1.Image = lst[i]; ;
                }
            }

[邋遢的土豆]

先把所有图片读出来 放到ImageList控件里 然后Timer中 改变pictureBox中的图片就可以 了

没有看懂楼主的意思。。不知道这样是想要的结果不

            
         private void Form1_Load(object sender, EventArgs e)
        {
            string sql_str = "select * from cj_main";
            SqlConnection conn = new SqlConnection(conn_str);
            SqlCommand command = new SqlCommand(sql_str, conn);
            conn.Open();
            SqlDataReader rs = command.ExecuteReader();
            while (rs.Read())
            {
                cj_names = rs[1].ToString();
                cj_pic_path = rs[3].ToString();
                //添加到ImageList里面
                this.imageList1.Images.Add(cj_names, Image.FromFile(cj_pic_path));
            }
        }
        private int index=0;//用来刷
        /// <summary>
        /// Timer来回刷实现循环
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>        
        private void timer1_Tick(object sender, EventArgs e)
        {

           this.pictureBox1.Image = this.imageList1.Images[index++];
           if (index>=this.imageList1.Images.Count)//如果大于图片个数~重新开始
           {
               index == 0;
           }
        }

[kensouterry]

这样能否满足楼主的要求，参考一下！

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        //假设这是你从数据库提取出来的ds数据集
        int[] _array = new int[5] { 1, 2, 3, 66, 77 };
        //用来 记录图片的索引位置，类成员
        int _picIndex = -1;

        public Form1()
        {
            InitializeComponent();
            
            //button1_Click(null, null);
            timer1.Enabled = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Hello,World");
        }


        /// <summary>
        /// Display each number sequence.
        /// 弹出的5个对话框就代表你显示的图片和文字
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (_picIndex < _array.Length-1)
            {
                _picIndex++;
                //假设MessageBox.Show就是你要显示的图片和文字
                MessageBox.Show(_array[_picIndex].ToString());
            }
            else
            {
                _picIndex = 0;
                timer1.Enabled = false;
                //图片显示完毕
            }
        }

        

    }
}