VS 2010中WinForm开发（C#）—图片上传到数据库与显示（sql server 2008）

using System;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;
using System.Data.SqlClient;namespace photoSC
{
public partial class Form1 : Form
{
SqlConnection conn;
public Form1()
{
InitializeComponent();
}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;
}
}
private void button2_Click(object sender, EventArgs e)
{
Save(PhotoToArray(textBox1.Text.ToString()));
Form1 f1 = new Form1();
f1.ShowDialog();
// 不在任务栏显示
//this.ShowInTaskbar = false;
// 窗体透明
this.Opacity = 0; //后面的取值0~100 ,0表示透明

}
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;
}
private void Save(byte[] image)
{
conn = new SqlConnection(SQL.conStr);
string sql = “insert into Photo(photo_Info,photo_Id) values(@photo,@photo_id)”;
SqlParameter param = new SqlParameter();
param = new SqlParameter(“@photo”, SqlDbType.Image);
param.Value = image;
SqlParameter param1 = new SqlParameter();
param1 = new SqlParameter(“@photo_id”, SqlDbType.Int);
param1.Value =textBox2.Text.ToString();
SqlCommand commd = new SqlCommand(sql, conn);
commd.Parameters.Add(param);
commd.Parameters.Add(param1);
try
{
conn.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
{
conn.Close();
}
}
private void button3_Click(object sender, EventArgs e)
{
conn = new SqlConnection(SQL .conStr);
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,conn);
cmd.Parameters.Add(param);
conn.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
{
conn.Close();
}

}

private void Form1_Load(object sender, EventArgs e)
{
// TODO: 这行代码将数据加载到表“exampelDataSet.Photo”中。您可以根据需要移动或删除它。
this.photoTableAdapter.Fill(this.exampelDataSet.Photo);
int photoid =Convert.ToInt32( comboBox1.Text.Trim().ToString());
}
}
}