I have had a big problem on transmitting attachments with DIME.
I want to transmit big attachments as large as 10M ,so I split the file into several blocks and treat each of them as one attachment.But after I receive the attachment,it doesn't work well.
The source code of the webmethod are here:

               [WebMethod]
                public void CreateDimedImage()
                {
                        SoapContext respContext = ResponseSoapContext.Current;
                        FileStream fs = new FileStream(@"C:\10M_Attachment_Test.DAT", FileMode.Open);
                        WriteToDime1(fs, "dat", respContext);
                }
                private void WriteToDime1(Stream inputStr, string mediaType,SoapContext respContext)
                {
                        byte[] bytes = new byte[fsize];
                        int numBytes;
                        DimeAttachment dimeAttach;
                        int num = 0;
                        while((numBytes = inputStr.Read(bytes, 0, size)) > 0)
                        {
                                MemoryStream dimeStr = new MemoryStream();
                                DimeWriter myDW = new DimeWriter(dimeStr);
                                DimeRecord myRecord = myDW.LastRecord(num.ToString(), mediaType,
                                        TypeFormat.MediaType, -1);
                                num++;
                                myRecord.ChunkSize = fsize;
                                BinaryWriter myWriter = new BinaryWriter(myRecord.BodyStream);

                                myWriter.Write(bytes, 0, numBytes);
                                dimeAttach = new DimeAttachment("dat", TypeFormat.MediaType, dimeStr);
                                dimeAttach.ChunkSize = Int32.MaxValue;
                                respContext.Attachments.Add(dimeAttach);
                        }
                }
The source code of the Client are here:
                       if (svc.ResponseSoapContext.Attachments.Count >0)
                        {
                            FileStream fs = new FileStream(@"C:\cuiheming.rar", FileMode.OpenOrCreate);                     int numBytes = 0;
                            int size = 4096;
                            int fsize = 4*4096;
                            byte[] bytes = new byte[size];
                           try
                                {
                                        foreach(Attachment at in svc.ResponseSoapContext.Attachments)
                                        {                                              
                                                DimeReader myDR = new DimeReader(at.Stream);
                                                DimeRecord myRecord = myDR.ReadRecord();    (***)
                                                myRecord.ChunkSize = fsize;
                                                BinaryReader myReader = new BinaryReader(myRecord.BodyStream);                                          
                                                if((numBytes = at.Stream.Read(bytes, 0, size)) > 0)
                                                {
                                                        fs.Write(bytes, 0, numBytes);
                                                }
                                        }
                                }
                                catch(Exception ee)
                                {
                                        MessageBox.Show(ee.ToString());
                                }
The line marked with *** throws exception saying that "Can not read from the stream",and I found that the length of at.Stream is 0!
Can anyone help me to solve the problem?
Thank you!
--
FROM 202.205.168.*