求求高手帮我改下水印效果的代码

Question

///  <summary>  
///  上传图片  
///  </summary>  
private  void  UploadImg()  
{  
           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(this.upfile.PostedFile.FileName).ToUpper();  
           string  filename  =  DateTime.Now.ToString("yyyyMMddhhmmss");  
           string  smallpath  =  Server.MapPath(".")+@"\upload\small\";  
           string  bigpath  =  Server.MapPath(".")+@"\upload\big\";  
           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  =this.upfile.PostedFile.InputStream;  
           string  simagefile  =  Server.MapPath("image/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  
           ViewState["imgurl"]=filename+extension;  
                                                 
           outputfile.Save(newpath);  
           thumimg.Save(thumpath);  
           outputfile.Dispose();  
           thumimg.Dispose();  
           g.Dispose();  
           Response.Write(newpath);  
 
                 }  
                                   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();  
                                   }  
                                     
                       }  
要保证其它效果不变,把图片水印效果变成在图片中间加个"www.fdasklfjd.com"字样的水印效果,请问要如何改动,请写下改动后的代码,并在后面写上注释,谢谢了,分不够可以再加

Answer 1

制作water
http://www.codeproject.com/csharp/water.asp