.Net 玩单反的技巧

public enum DriveType
    {
        // Summary:
        //     The type of drive is unknown.
        Unknown = 0,
        //
        // Summary:
        //     The drive does not have a root directory.
        NoRootDirectory = 1,
        //
        // Summary:
        //     The drive is a removable storage device, such as a floppy disk drive or a
        //     USB flash drive.
        Removable = 2,
        //
        // Summary:
        //     The drive is a fixed disk.
        Fixed = 3,
        //
        // Summary:
        //     The drive is a network drive.
        Network = 4,
        //
        // Summary:
        //     The drive is an optical disc device, such as a CD or DVD-ROM.
        CDRom = 5,
        //
        // Summary:
        //     The drive is a RAM disk.
        Ram = 6,
    }

        public void DownJpgFromAllCamera()
        {
            int i = 1;
            foreach (IDeviceInfo DevInfo in new DeviceManagerClass().DeviceInfos)
            {
                if (DevInfo.Type == WiaDeviceType.CameraDeviceType)
                {
                    string DeviceID = DevInfo.DeviceID;
                    Device wDevice = DevInfo.Connect();
                    Devparam dev = new Devparam {wiaDevice=wDevice, DeviceID = DeviceID, index = i };
                    new Thread((Camera) => 
                        {
                            DownJpg(((Devparam)Camera).wiaDevice, ((Devparam)Camera).DeviceID, ((Devparam)Camera).index);
                        }
                        ).Start(dev);
                 
                  
                    i++;
                }
            }
        }

        public delegate uint EdsProgressCallback( uint inPercent, IntPtr inContext, ref bool outCancel);
        public delegate uint EdsCameraAddedHandler(IntPtr inContext);
        public delegate uint EdsPropertyEventHandler(uint inEvent, uint inPropertyId, uint inParam, IntPtr inContext); 
        public delegate uint EdsObjectEventHandler( uint inEvent, IntPtr inRef, IntPtr inContext); 
        public delegate uint EdsStateEventHandler( uint inEvent, uint inParameter, IntPtr inContext);