using System.IO; using System.Drawing.Imaging;
private void Button1_ServerClick(object sender, System.EventArgs e) { Graphics g=null; System.Drawing.Image upimage=null; System.Drawing.Image thumimg=null; System.Drawing.Image simage=null; Bitmap outputfile=null; try { string extension = Path.GetExtension(File1.PostedFile.FileName).ToUpper(); string filename = DateTime.Now.ToString("yyyyMMddhhmmss"); string smallpath = Server.MapPath(".")+"/smallimg/"; string bigpath = Server.MapPath(".")+"/bigimg/"; int width,height,newwidth,newheight;
System.Drawing.Image.GetThumbnailImageAbort callb =new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback); if(!Directory.Exists(smallpath)) Directory.CreateDirectory(smallpath); if(!Directory.Exists(bigpath)) Directory.CreateDirectory(bigpath);
Stream upimgfile = File1.PostedFile.InputStream; string simagefile = Server.MapPath("a8logo.jpg"); //要加水印的文件 simage=System.Drawing.Image.FromFile(simagefile); upimage= System.Drawing.Image.FromStream(upimgfile); //上传的图片
width = upimage.Width; height = upimage.Height; if(width>height) { newwidth=200; newheight =(int)((double)height/(double)width * (double)newwidth); } else { newheight=200; newwidth=(int)((double)width/(double)height * (double)newheight); } thumimg = upimage.GetThumbnailImage(newwidth,newheight,callb,IntPtr.Zero); outputfile=new Bitmap(upimage); g=Graphics.FromImage(outputfile); g.DrawImage(simage,new Rectangle(upimage.Width-simage.Width,upimage.Height-simage.Height,upimage.Width,upimage.Height),0,0,upimage.Width,upimage.Height,GraphicsUnit.Pixel);
string newpath = bigpath + filename + extension; //原始图路径 string thumpath = smallpath + filename + extension; //缩略图路径 outputfile.Save(newpath); thumimg.Save(thumpath); outputfile.Dispose();
} catch(Exception ex) { throw ex; } finally { if(g!=null) g.Dispose(); if(thumimg!=null) thumimg.Dispose(); if(upimage!=null) upimage.Dispose(); if(simage!=null) simage.Dispose(); } } public bool ThumbnailCallback() { return false; }
文章来源:网络 [办公软件]在Powerpoint中如何插入Flash动画 [办公软件]根除PowerPoint中Flash动画不能正常播放的问题 [办公软件]Office(Word,Excel)密码破解软件(Office Password… [办公软件]powerpoin自定义播放FLASH动画 [办公软件]PPT插入Flash其属性无自定义的两种解决办法 [办公软件]如何在excel中插入flash动画 [Sql Server]ASP.NET利用SQLDMO实现数据库的备份与恢复下篇 [Sql Server]ASP.NET利用SQLDMO实现数据库的备份与恢复上篇 [Web开发]ASP.NET地址重写、使用伪静态、页面回发处理 [Web开发]asp.net(c#)发送邮件代码
|