删除Player上指定的媒体文件

 #region 磁盘空间管理：删除Player上指定的媒体文件
        
        public void CommandSetManageDisk(byte gid, byte did,string deletestring)
        {
            //   分包发送
            string ManageDiskStr = deletestring;
            byte i = 0;
            Encoding GB2312Encoding = UnicodeEncoding.GetEncoding("GB2312");
            byte[] ManageDisk = GB2312Encoding.GetBytes(ManageDiskStr);
            byte [] myManageDisk = new byte [300];
            int txtLength = ManageDisk.Length;

            int packetizationtimer = txtLength / 300;
            int packetizationresidue = txtLength % 300;
            int packetizationsender;
            //如果没有余数，发包时就不用多发一次 
            if (packetizationresidue > 0)
            {
                packetizationsender = packetizationtimer + 1;
            }
            else
            {
                packetizationsender = packetizationtimer;
            }
            //开始分包发送
            for (i = 0; i < packetizationsender; i++)
            {
                if (i < packetizationtimer)
                {
                    Array.Copy(ManageDisk, i * 300, myManageDisk, 0, 300);
                }
                else
                {
                    Array.Copy(ManageDisk, i * 300, myManageDisk, 0, packetizationresidue);
                }

                PlayerMessages.SetManageDisk setmanagedisk  = new PlayerMessages.SetManageDisk();
                setmanagedisk.direct = 0x02;
                setmanagedisk.category = 0x03;
                setmanagedisk.type = 0x10;
              
                setmanagedisk.GroupID = gid ;
                setmanagedisk.DeviceID = did ;
                setmanagedisk.Sequence = i;
                setmanagedisk.size  = 300;
                 if (i == (packetizationsender-1)) {

                     setmanagedisk.Sequence=0xFF;
                     setmanagedisk.size  =(ushort)packetizationresidue;
                             
                 }

                setmanagedisk.DeleteFile = myManageDisk;

                byte[] data = PlayerMessages.StructToBytes(setmanagedisk);
                ssock.OnUDPDataSend(data);
            }
        }
          

PlayerMessages.SetManageDisk 是struct，UDP包的数据结构
setmanagedisk.Sequence = i;表示包的序号，0xFF表示最后一个包