public void DownloadFile(PortableDeviceFile file,
string saveToFolderPath)
{
IPortableDeviceContent content;
this._device.Content(out content);
IPortableDeviceResources resources;
content.Transfer(out resources);
PortableDeviceApiLib.IStream wpdStream;
uint optimalTransferSize = 0;
var property = new _tagpropertykey();
property.fmtid = new Guid(0xE81E79BE, 0x34F0, 0x41BF,
0xB5, 0x3F, 0xF1, 0xA0,
0x6A, 0xE8, 0x78, 0x42);
property.pid = 0;
resources.GetStream(file.Id,
ref property,
0,
ref optimalTransferSize,
out wpdStream);
System.Runtime.InteropServices.ComTypes.IStream sourceStream =
(System.Runtime.InteropServices.ComTypes.IStream)wpdStream;
var filename = Path.GetFileName(file.Id);
FileStream targetStream =
new FileStream(Path.Combine(saveToFolderPath, filename),
FileMode.Create,
FileAccess.Write);
unsafe
{
var buffer = new byte[1024];
int bytesRead;
do
{
sourceStream.Read(buffer, 1024, new IntPtr(&bytesRead));
targetStream.Write(buffer, 0, 1024);
} while (bytesRead > 0);
targetStream.Close();
}
Marshal.ReleaseComObject(sourceStream);
Marshal.ReleaseComObject(wpdStream);
}
public void DeleteFile(PortableDeviceFile file)
{
IPortableDeviceContent content;
this._device.Content(out content);
var variant = new tag_inner_PROPVARIANT();
StringToPropVariant(file.Id, out variant);
IPortableDevicePropVariantCollection objectIds =
new PortableDeviceTypesLib.PortableDevicePropVariantCollection()
as IPortableDevicePropVariantCollection;
objectIds.Add(variant);
content.Delete(0, objectIds, null);
}
