在ASP.NET中上传图片并生成带版权信息的缩略图
日期：2011-09-22 浏览次数：20555 次
前台:
<HTML>
<HEAD>
<title>WebForm3</title>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<INPUT id="loadFile" type="file" runat="server">
<asp:Button id="Button1" runat="server" Text="Button"></asp:Button><BR>
<asp:Image id="Image1" runat="server"></asp:Image></form>
</body>
</HTML>
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
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
27 Image1.ImageUrl = newFileName;
28 }
29
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 &n
