![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
后台CS代码:
1
/// <summary>
2
/// 生成缩略图
3
/// </summary>
4
/// <param name="fileName">原文件</param>
5
/// <param name="width">宽度</param>
6
/// <param name="height">高度</param>
7
private void CreateThumbnailImage( string fileName,string smallPath,int width,int height )
8
{
9
//版权信息
10
string strAdd = "www.wander.com";
11
//生成的缩略图的名字=年月日+文件大小(防止文件名相同)
12
string newFileName = smallPath;
13![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
14
System.Drawing.Image image,newImage;
15
//载入原图像
16
image = System.Drawing.Image.FromFile( Server.MapPath( fileName ) );
17
//回调
18
System.Drawing.Image.GetThumbnailImageAbort callb = new System.Drawing.Image.GetThumbnailImageAbort( callBack );
19
//生成缩略图
20
newImage = image.GetThumbnailImage( width,height,callb,new System.IntPtr() );
21
22
AddInfo( newImage,strAdd,newFileName,16 );
23
24
image.Dispose();
25
newImage.Dispose();
26![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
27
Image1.ImageUrl = newFileName;
28
}
29![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
30
/// <summary>
31
/// 添加版权信息
32
/// </summary>
33
/// <param name="image"></param>
34
/// <param name="strAdd"></param>
35
/// <param name="newFileName"></param>
36
/// <param name="fontSize"></param>
37
private void AddInfo( System.Drawing.Image image,string strAdd,string newFileName,int fontSize )
38
{
39
Response.Clear();
40
Bitmap b = new Bitmap( image );
41
Graphics g = Graphics.FromImage( b );
42
g.DrawString( strAdd,new Font( "宋体",fontSize ),new SolidBrush( Color.Red ),image.Width/2-80 ,image.Height-30 );
43
b.Save( Server.MapPath( newFileName ),System.Drawing.Imaging.ImageFormat.Gif );
44
}
45![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
46
private bool callBack()
47
{
48
return true;
49
}
50![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
51
private void Button1_Click(object sender, System.EventArgs e)
52
{
53
if( loadFile.PostedFile != null )
54
{
55
//判断是不是图像文件
56
if( loadFile.PostedFile.ContentType.ToLower().IndexOf( "image" ) < 0 )
57
{
58
//文件类型错误
59
}
60
else
61
{
62
string ext = loadFile.PostedFile.FileName.Substring( loadFile.PostedFile.FileName.LastIndexOf( "." ) );
63
//生成新的原文件名 年月日+文件大小+扩展名
64
string path = "Uploads\\" + System.DateTime.Now.Date.ToShortDateString() + loadFile.PostedFile.ContentLength.ToString() + ext ;
65
//加上版权信息的文件
66
string newPath = "Uploads\\" + System.DateTime.Now.Date.ToShortDateString() + loadFile.PostedFile.ContentLength.ToString() + "new" + ext ;
67
//缩略图文件名
68
string newFileName = "uploads\\" + System.DateTime.Now.Date.ToShortDateString() + loadFile.PostedFile.ContentLength.ToString() + "small.gif";
69
//上传原图
70
loadFile.PostedFile.SaveAs( Server.MapPath( path ) );
71
//生成缩略图
72
CreateThumbnailImage( path,newFileName,200,300 );
73![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
74
//给原图加上版权信息
75
System.Drawing.Image image = System.Drawing.Image.FromFile( Server.MapPath( path ) );
76
AddInfo( image,"www.wander.com",newPath,20 );
77
image.Dispose();
78
}
79
}
80
}
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
2
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
3
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
4
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
5
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
6
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
7
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
8
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
9
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
10
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
11
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
12
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
13
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
14
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
15
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
16
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
17
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
18
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
19
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
20
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
21
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
22
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
23
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
24
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
25
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
26
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
27
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
28
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
29
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
30
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
31
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
32
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
33
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
34
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
35
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
36
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
37
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
38
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
39
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
40
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
41
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
42
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
43
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
44
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
45
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
46
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
47
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
48
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
49
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
50
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
51
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
52
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
53
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
54
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
55
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
56
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
57
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
58
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
59
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
60
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
61
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
62
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
63
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
64
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
65
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
66
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
67
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
68
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
69
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
70
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
71
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
72
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
73
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
74
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
75
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
76
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
77
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
78
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
79
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
80
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
其实把版权信息改成水印的也很简单,只需要修改AddInfo方法即可