C#与sql进行图片存取

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Threading.Tasks;
 9 using System.Windows.Forms;
10
11 using System.IO;
12 using System.Data.SqlClient;
13
14
15
16 namespace 图片存取
17 {
18     public partial class 实例 : Form
19     {
20         public 实例()
21         {
22             InitializeComponent();
23         }
24         public static string str = "server=192.168.0.102;database=mysql;uid=sa;pwd=a123456";
25         private void 实例_Load(object sender, EventArgs e)
26         {
27
28         }
29
30         /// <summary>
31         ///
32         /// </summary>
33         /// <param name="path"></param>
34         public static void InsertImg(string path)
35         {
36
37             byte[] bytes = File.ReadAllBytes(path);
38             SqlConnection con = new SqlConnection(str);
39             con.Open();
40             SqlCommand cmd = new SqlCommand("insert into table_2 values(@image)",con);
41             cmd.Parameters.Add("@image", SqlDbType.Image).Value = bytes;
42             cmd.ExecuteNonQuery();
43             con.Close();
44
45             //cmd.Dispose();
46
47         }
48
49         public static void ReadImg(string path)
50         {
51             SqlConnection con = new SqlConnection(str);
52             con.Open();
53             SqlCommand cmd = new SqlCommand("select image from table_2 ",con);
54             object scalar = cmd.ExecuteScalar();
55             byte[] bytes = (byte[])scalar;
56
57             File.WriteAllBytes(path, bytes);
58             con.Close();
59             //cmd.Dispose();
60
61         }
62
63         private void button1_Click(object sender, EventArgs e)
64         {
65             InsertImg(@"C: \Users\Administrator\Desktop\0811\3-2.jpg");
66             ReadImg(@"C: \Users\Administrator\Desktop\0811\3-2-1.jpg");
67         }
68     }
69 }