DiscuzNT使用Silverlight进行多文件上传(下)

///   <summary>
///  选择文件对话框事件
///   </summary>
///   <param name="sender"></param>
///   <param name="e"></param>
private   void  SelectFilesButton_Click( object  sender, RoutedEventArgs e)
{
     if  (AttachmentList.Count  >=  _maxAttachments)
    {
        ShowMessageBox( " \r\n您上传的文件数已达到系统规定的上限:  "   +  _maxAttachments  +   " . " );
         return ;
    }

    OpenFileDialog ofd  =   new  OpenFileDialog();
    ofd.Multiselect  =   true ;

     try
    {
         if ( ! string .IsNullOrEmpty(_fileFilter))
            ofd.Filter  =  _fileFilter;
    }
     catch (ArgumentException ex)
    {
        ShowMessageBox( " 错误的文件过滤配置:  "   +  ex.Message);
    }

     if  (ofd.ShowDialog()  ==   true )
    {
         if  (filecount  ==   0 )
            filecount  =  AttachmentList.Count;

         foreach  (FileInfo file  in  ofd.Files)
        {
             if  ((filecount  +   1 )  >  _maxAttachments)
            {
                ShowMessageBox( " \r\n您上传的文件数已达到系统规定的上限:  "   +  _maxAttachments  +   " . " );
                 return ;
            }
            filecount ++ ;

             string  fileName  =  file.Name;
            UserFile userFile  =   new  UserFile();
            userFile.FileName  =  file.Name;
            userFile.FileStream  =  file.OpenRead();
            userFile.ViewStream  =  file.OpenRead();

             // 总上传值在规定范围内时
             if  (_todayAttachSize  <  (_todayUploadSize  +  _wantUploadSize  +  userFile.FileStream.Length))
            {
                ShowMessageBox( " \r\n当前附件大小:  "   +  Math.Round(( decimal )userFile.FileStream.Length  /   1024   /   1024 ,  2 )
                  +   "  MB, 而今天还可以上传: "   +  Math.Round(( decimal )(_todayAttachSize  -  _todayUploadSize)  /   1024   /   1024 ,  2 )  +   "  MB. " );
                 break ;
            }
             // 当单个文件大小大于最大上传附件尺寸时
             if  (userFile.FileStream.Length  >  _maxFileSize)
            {
                ShowMessageBox( " \r\n当前附件大小:  "   +  Math.Round(( decimal )userFile.FileStream.Length  /   1024   /   1024 ,  2 )
                 +   "  MB, 而单个附件允许最大尺寸为:  "   +  Math.Round(( decimal )_maxFileSize  /   1024   /   1024 ,  2 )  +   "  MB.\r\n " );
                 break ;
            }

             // 向文件列表中添加文件信息
            _files.Add(userFile);
            _wantUploadSize  +=  userFile.FileStream.Length;  
        }
    }
}       

///   <summary>
///  上传文件
///   </summary>
private   void  UploadAdvanced()
{
    
     byte [] buffer  =   new   byte [ 4   *   4096 ];
     int  bytesRead  =  _file.FileStream.Read(buffer,  0 , buffer.Length);

     // 文件是否上传完毕?
     if  (bytesRead  !=   0 )
    {
        _dataSent  +=  bytesRead;

         if  (_dataSent  ==  _dataLength)
            _lastChunk  =   true ; // 是否是最后一块数据，这样WCF会在服务端根据该信息来决定是否对临时文件重命名

         // 上传当前数据块
        _client.StoreFileAdvancedAsync(_file.FileName, buffer, bytesRead, _initParams, _firstChunk, _lastChunk, 
                 Utils.GetCredentialInfo());

         // 在第一条消息之后一直为false
        _firstChunk  =   false ;

         // 通知上传进度修改
        OnProgressChanged();
    }
     else
    {
         // 当上传完毕后
        _file.FileStream.Dispose();
        _file.FileStream.Close();

        _client.ChannelFactory.Close();          
    }
}

  ///   <summary>
  ///  上传附件
  ///   </summary>
  ///   <param name="fileName"> 文件名称 </param>
  ///   <param name="data"> 上传的字节数据 </param>
  ///   <param name="dataLength"> 数据长度 </param>
  ///   <param name="parameters"> 上传参数 </param>
  ///   <param name="firstChunk"> 是否第一块数据 </param>
  ///   <param name="lastChunk"> 是否最后一块数据 </param>
 [WebMethod]
  public  AttachmentInfo StoreFileAdvanced( string  fileName,  byte [] data,  int  dataLength,  string  parameters, 
                                         bool  firstChunk,  bool  lastChunk, CredentialInfo creinfo)
 {
      if  (AuthenticateUser(creinfo))
     {
         UploadSetInfo uploadSetInfo  =  GetAttachmentUploadSet(creinfo);
          string  fileextname  =  Utils.CutString(fileName, fileName.LastIndexOf( " . " )  +   1 ).ToLower();

          if  (uploadSetInfo.CanPostAttach  &&  uploadSetInfo.AttachExtensionsNoSize.IndexOf(fileextname)  >=   0   &&  
             uploadSetInfo.AttachSize  >  dataLength  &&  Utils.StrIsNullOrEmpty(uploadSetInfo.ErrMessage))
         {
              string  uploadFolder  =  GetUploadFolder(fileName, creinfo.ForumID.ToString());
              string  tempFileName  =  fileName  +  _tempExtension;

              if  (firstChunk)
             {
                  // 删除临时文件
                  if  (File.Exists(@HostingEnvironment.ApplicationPhysicalPath  +   " /upload/temp/ "   +  tempFileName))
                     File.Delete(@HostingEnvironment.ApplicationPhysicalPath  +   " /upload/temp/ "   +  tempFileName);

                  // 删除目录文件
                  if  (File.Exists(uploadFolder  +   " / "   +  fileName))
                     File.Delete(uploadFolder  +   " / "   +  fileName);
             }


             FileStream fs  =  File.Open(@HostingEnvironment.ApplicationPhysicalPath  +   " /upload/temp/ "   +  
                                        tempFileName, FileMode.Append);
             fs.Write(data,  0 , dataLength);
             fs.Close();

              if  (lastChunk)
             {
                 File.Move(HostingEnvironment.ApplicationPhysicalPath  +   " /upload/temp/ "   +  tempFileName, 
                                       uploadFolder  +   " / "   +  fileName);
                  return  Discuz.Forum.Attachments.GetAttachmentInfo(AddAttachment(fileName, creinfo));
             }
         }
     }
      return   null ;
 }

if  (uploadSetInfo.CanPostAttach  &&  uploadSetInfo.AttachExtensionsNoSize.IndexOf(fileextname)  >=   0  
     &&  uploadSetInfo.AttachSize  >  dataLength  &&
             Utils.StrIsNullOrEmpty(uploadSetInfo.ErrMessage))

///   <summary>
///  添加附件
///   </summary>
///   <param name="fileName"> 文件名称 </param>
///   <param name="creinfo"> 认证信息 </param>
///   <returns> 返回当前插入的附件id </returns>
private   int  AddAttachment( string  fileName, CredentialInfo creinfo)
{
     string  UploadDir  =  GetUploadFolder(fileName, creinfo.ForumID.ToString());
    AttachmentInfo attachmentinfo  =   new  AttachmentInfo();
     string  fileextname  =  Utils.CutString(fileName, fileName.LastIndexOf( " . " )  +   1 ).ToLower();
     string  newfilename  =  (Environment.TickCount  &   int .MaxValue).ToString()  +   new  Random().Next( 1000 ,  9999 ) 
                        +   " . "   +  fileextname;

     try
    {
         //  如果是bmp jpg png图片类型
         if  ((fileextname  ==   " bmp "   ||  fileextname  ==   " jpg "   ||  fileextname  ==   " jpeg "   ||  fileextname  ==   " png " ))
        {
             if  (Discuz.Common.Utils.FileExists(UploadDir  +  fileName))
            {
                System.Drawing.Image img  =  System.Drawing.Image.FromFile(UploadDir  +  fileName);

                 if  (config.Attachimgmaxwidth  >   0   &&  img.Width  >  config.Attachimgmaxwidth)
                    attachmentinfo.Sys_noupload  =   " 图片宽度为 "   +  img.Width.ToString()  +   " , 系统允许的最大宽度为 "  
                                    +  config.Attachimgmaxwidth.ToString();

                 if  (config.Attachimgmaxheight  >   0   &&  img.Height  >  config.Attachimgmaxheight)
                    attachmentinfo.Sys_noupload  =   " 图片高度为 "   +  img.Width.ToString()  +   " , 系统允许的最大高度为 "  
                                    +  config.Attachimgmaxheight.ToString();

                 if  (config.Watermarkstatus  ==   0 )
                    attachmentinfo.Filesize  =   new  FileInfo(UploadDir  +  fileName).Length;
                 else
                {
                     if  (config.Watermarktype  ==   1   &&  File.Exists(Utils.GetMapPath(BaseConfigs.GetForumPath 
                                            +   " watermark/ "   +  config.Watermarkpic)))
                        Discuz.Forum.ForumUtils.AddImageSignPic(img, UploadDir  +  newfilename, 
                                        Utils.GetMapPath(BaseConfigs.GetForumPath  +   " watermark/ "   +  config.Watermarkpic), 
                                        config.Watermarkstatus, config.Attachimgquality, config.Watermarktransparency);
                     else
                    {
                         string  watermarkText;
                        watermarkText  =  config.Watermarktext.Replace( " {1} " , config.Forumtitle);
                        watermarkText  =  watermarkText.Replace( " {2} " ,  " http:// "   +  DNTRequest.GetCurrentFullHost()  +   " / " );
                        watermarkText  =  watermarkText.Replace( " {3} " , Utils.GetDate());
                        watermarkText  =  watermarkText.Replace( " {4} " , Utils.GetTime());

                        Discuz.Forum.ForumUtils.AddImageSignText(img, UploadDir  +  newfilename, watermarkText,
                            config.Watermarkstatus, config.Attachimgquality, config.Watermarkfontname, config.Watermarkfontsize);
                    }
                    System.IO.File.Delete(UploadDir  +  fileName);
                     //  获得加水印后的文件长度
                    attachmentinfo.Filesize  =   new  FileInfo(UploadDir  +  newfilename).Length;
                }
            }
        }
         else
        {
            System.IO.File.Move(UploadDir  +  fileName, UploadDir  +  newfilename);
            attachmentinfo.Filesize  =   new  FileInfo(UploadDir  +  newfilename).Length;
        }
    }
     catch {}

     if  (Discuz.Common.Utils.FileExists(UploadDir  +  fileName))
    {
        attachmentinfo.Filesize  =   new  FileInfo(UploadDir  +  fileName).Length;
        attachmentinfo.Filename  =  GetDirInfo(fileName, creinfo.ForumID.ToString())  +  fileName;
    }

     if  (Discuz.Common.Utils.FileExists(UploadDir  +  newfilename))
    {
        attachmentinfo.Filesize  =   new  FileInfo(UploadDir  +  newfilename).Length;
        attachmentinfo.Filename  =  GetDirInfo(newfilename, creinfo.ForumID.ToString())  +  newfilename;
    }
    
    attachmentinfo.Uid  =  creinfo.UserID;
    attachmentinfo.Description  =  fileextname;
    attachmentinfo.Filetype  =  GetContentType(fileextname);
    attachmentinfo.Attachment  =  fileName;
    attachmentinfo.Downloads  =   0 ;
    attachmentinfo.Postdatetime  =  DateTime.Now.ToString();
    attachmentinfo.Sys_index  =   0 ;

     return  Discuz.Data.DatabaseProvider.GetInstance().CreateAttachment(attachmentinfo);
}

///   <summary>
///  返回按钮事件
///   </summary>
///   <param name="sender"></param>
///   <param name="e"></param>
private   void  FinishUpload_Click( object  sender, RoutedEventArgs e)
{
    GetAttachmentList();
}

[ScriptableMember]
public   void  GetAttachmentList()
{
    StringBuilder sb_attachments  =   new  StringBuilder();
    sb_attachments.Append( " [ " );
     foreach  (AttachmentInfo attachmentInfo  in  AttachmentList)
    {
        sb_attachments.Append( string .Format( " {{'aid' : {0}, 'attachment' : '{1}', 'description' : '{2}',  'filename' : 
                         ' {3} ' ,  ' filesize '  :{ 4 },  ' filetype '  :  ' {5} ' ,  ' Uid '  : { 6 }}}, " ,
            attachmentInfo.Aid,
            attachmentInfo.Attachment,
            attachmentInfo.Description.Trim(),
            attachmentInfo.Filename.Trim(),
            attachmentInfo.Filesize,
            attachmentInfo.Filetype,
            attachmentInfo.Uid
            ));
    }
     if  (sb_attachments.ToString().EndsWith( " , " ))
        sb_attachments.Remove(sb_attachments.Length  -   1 ,  1 );

    sb_attachments.Append( " ] " );

     // 调用js端注册事件
    javaScriptableObject.OnUploadAttchmentList(JsonCharFilter(sb_attachments.ToString()));
}

function  onLoad(plugin, userContext, sender) {
      // 只读属性,标识 Silverlight 插件是否已经加载。
      if  (sender.getHost().IsLoaded) {
         $( " MultiUploadFile " ).content.JavaScriptObject.UploadAttchmentList  =  getAttachmentList;         
     }
 }
 
// 获取silverlight插件已经上传的附件列表
function  getAttachmentList(sender, args) {
      var  attachment  =  args.AttchmentList;
      if  (isUndefined(attachment)  ||  attachment  ==   ' [] ' ) {
         BOX_remove( ' silverlightControlHost ' );
          return ;
     }
      var  attachmentList  =  eval( " ( "   +  attachment  +   " ) " );

     BOX_remove( ' silverlightControlHost ' );
     addAttachUploaded(attachmentList);     
 }