iLeichun

在开发的过程中,难免遇到图片保存问题,解决的方法有很多,这里我把图片以二进制的形式保存到数据库中,也许这个形式并不是最高效的方式,但也不失为一种好的方法吧.呵呵,下面简单的demo可以作为参考:

1Code#region Code
2
3         //单击"浏览"按钮
4
5         private void button1_Click(object sender, System.EventArgs e)
6
7         {
8
9               DialogResult result=this.openFileDialog1.ShowDialog();
10
11              if(result==DialogResult.OK)
12
13              {
14
15                   this.textBox1.Text=this.openFileDialog1.FileName.ToString
16
17();
18
19                    Image img = Bitmap.FromFile(this.textBox1.Text);
20
21                   this.pictureBox1.Image=img;
22
23               }
24
25      
26
27          }
28
29         //单击"确定"按钮
30
31         private void button2_Click(object sender, System.EventArgs e)
32
33         {
34
35              //插入数据库操作,图片类型的参数为PicToBinary()返回的byte[]即可
36
37把图片以字节的形式保存到数据库中
38
39          }
40
41         //图片转换为字节数组
42
43         private byte[] PicToBinary()
44
45         {
46
47              //创建参数集
48
49              string path = this.textBox1.Text.Trim();
50
51              byte[] source = null;
52
53              if(!path.Equals("") && File.Exists(path))
54
55              {
56
57                    FileStream fs=new FileStream
58
59(path,FileMode.Open,FileAccess.Read);//创建文件流
60
61                    source=new byte[(int)fs.Length];
62
63                    fs.Read(source,0,(int)fs.Length);
64
65                    Image img = Bitmap.FromStream(fs);//把文件流转换为图片
66
67                   if(img.Width > 300 || img.Height > 400)
68
69                   {
70
71                        MessageBox.Show("图片过大,请上传400*300以下的图片");
72
73                       return;
74
75                    }                  
76
77                    fs.Flush();
78
79                    fs.Close();
80
81               }
82
83              return source;
84
85          }
86
87
88
89         #endregion1Code#region Code
2
3         //单击"浏览"按钮
4
5         private void button1_Click(object sender, System.EventArgs e)
6
7         {
8
9               DialogResult result=this.openFileDialog1.ShowDialog();
10
11              if(result==DialogResult.OK)
12
13              {
14
15                   this.textBox1.Text=this.openFileDialog1.FileName.ToString
16
17();
18
19                    Image img = Bitmap.FromFile(this.textBox1.Text);
20
21                   this.pictureBox1.Image=img;
22
23               }
24
25      
26
27          }
28
29         //单击"确定"按钮
30
31         private void button2_Click(object sender, System.EventArgs e)
32
33         {
34
35              //插入数据库操作,图片类型的参数为PicToBinary()返回的byte[]即可
36
37把图片以字节的形式保存到数据库中
38
39          }
40
41         //图片转换为字节数组
42
43         private byte[] PicToBinary()
44
45         {
46
47              //创建参数集
48
49              string path = this.textBox1.Text.Trim();
50
51              byte[] source = null;
52
53              if(!path.Equals("") && File.Exists(path))
54
55              {
56
57                    FileStream fs=new FileStream
58
59(path,FileMode.Open,FileAccess.Read);//创建文件流
60
61                    source=new byte[(int)fs.Length];
62
63                    fs.Read(source,0,(int)fs.Length);
64
65                    Image img = Bitmap.FromStream(fs);//把文件流转换为图片
66
67                   if(img.Width > 300 || img.Height > 400)
68
69                   {
70
71                        MessageBox.Show("图片过大,请上传400*300以下的图片");
72
73                       return;
74
75                    }                  
76
77                    fs.Flush();
78
79                    fs.Close();
80
81               }
82
83              return source;
84
85          }
86
87
88
89         #endregion1Code#region Code
2
3         //单击"浏览"按钮
4
5         private void button1_Click(object sender, System.EventArgs e)
6
7         {
8
9               DialogResult result=this.openFileDialog1.ShowDialog();
10
11              if(result==DialogResult.OK)
12
13              {
14
15                   this.textBox1.Text=this.openFileDialog1.FileName.ToString
16
17();
18
19                    Image img = Bitmap.FromFile(this.textBox1.Text);
20
21                   this.pictureBox1.Image=img;
22
23               }
24
25      
26
27          }
28
29         //单击"确定"按钮
30
31         private void button2_Click(object sender, System.EventArgs e)
32
33         {
34
35              //插入数据库操作,图片类型的参数为PicToBinary()返回的byte[]即可
36
37把图片以字节的形式保存到数据库中
38
39          }
40
41         //图片转换为字节数组
42
43         private byte[] PicToBinary()
44
45         {
46
47              //创建参数集
48
49              string path = this.textBox1.Text.Trim();
50
51              byte[] source = null;
52
53              if(!path.Equals("") && File.Exists(path))
54
55              {
56
57                    FileStream fs=new FileStream
58
59(path,FileMode.Open,FileAccess.Read);//创建文件流
60
61                    source=new byte[(int)fs.Length];
62
63                    fs.Read(source,0,(int)fs.Length);
64
65                    Image img = Bitmap.FromStream(fs);//把文件流转换为图片
66
67                   if(img.Width > 300 || img.Height > 400)
68
69                   {
70
71                        MessageBox.Show("图片过大,请上传400*300以下的图片");
72
73                       return;
74
75                    }                  
76
77                    fs.Flush();
78
79                    fs.Close();
80
81               }
82
83              return source;
84
85          }
86
87
88
89         #endregion