asp.net 上传文件保存到数据库的方法( C#)

asp教程.net 上传文件保存到数据库教程的方法( C#)
C#做一个小的程序，其中用涉及到了照片的存取与显示，在网上搜索了很多有关的代码，但是几乎没有完整，大部分只是其中的存取或者显示代码，笔者将其整理了一下，形成了一个集照片上传到数据库、照片显示于一体的小模块。 using

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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //选择按钮事件处理
        private void button1_Click(object sender, EventArgs e)
        {
            openFileDialog1.InitialDirectory = "C:";
            openFileDialog1.Filter = "图片文件 (*.jpg)|*.jpg";
            openFileDialog1.FilterIndex = 1;
            openFileDialog1.RestoreDirectory = true;
            openFileDialog1.Multiselect = true;
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                textBox1.Text = openFileDialog1.FileName;
            }
        }
        //上传按钮事件处理
        private void button2_Click(object sender, EventArgs e)
        {
            Save(PhotoToArray(textBox1.Text.ToString()));
        }
        //将图片信息转换成二进制信息
        private byte[] PhotoToArray(string path)
        {
            FileStream stream = new FileStream(path, FileMode.Open, FileAccess.Read);
            byte[] bufferPhoto = new byte[stream.Length];
            stream.Read(bufferPhoto, 0, Convert.ToInt32(stream.Length));
            stream.Flush();
            stream.Close();
            return bufferPhoto;
        }
        //把二进制的图片插到数据库
        private void Save(byte[] image)
        {
            string sql = "insert into Photo(photo_Info) values(@photo)";
            SqlParameter param = new SqlParameter();
            param = new SqlParameter("@photo", SqlDbType.Image);
            param.Value = image;
            SqlCommand commd = new SqlCommand(sql, DBhelper.con);
            commd.Parameters.Add(param);
            try
            {
                DBhelper.con.Open();
                commd.ExecuteNonQuery();
                MessageBox.Show("您已经把图片成功的插入数据库！");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            finally
            {
                DBhelper.con.Close();
            }
        }
        //显示图片按钮事件处理
        private void button3_Click(object sender, EventArgs e)
        {
            string strSQL = "Select   [photo_Info]   From   [Photo]   Where   [photo_Id]=(@photo)";
            SqlParameter param = new SqlParameter();
            param = new SqlParameter("@photo", SqlDbType.Int);
            param.Value = comboBox1.Text.ToString();
            SqlCommand cmd = new SqlCommand(strSQL, DBhelper.con);
            cmd.Parameters.Add(param);
            DBhelper.con.Open();
            System.Data.SqlClient.SqlDataReader reader = cmd.ExecuteReader();
            try
            {
                reader.Read();
                MemoryStream ms = new MemoryStream((byte[])reader["photo_Info"]);
                System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true);
                this.pictureBox1.Image = image;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            finally
            {
                DBhelper.con.Close();
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: 这行代码将数据加载到表“myPhotoDataSet.Photo”中。您可以根据需要移动或移除它。
            this.photoTableAdapter.Fill(this.myPhotoDataSet.Photo);
        }
    }
}