void IStream.Read(Byte[] buffer, Int32 bufferSize, IntPtr bytesReadPtr)
{
try
{
//Check that close has not been called
if (closeStream)
{
Marshal.WriteInt32(bytesReadPtr, -1);
return;
}
//TODO - shell reads 16 bytes of data and discards it when the drop begins??
if (bufferSize == 16)
{
Marshal.WriteInt32(bytesReadPtr, -1);
return;
}
//check if file is fully read
if (readLen >= SourceVirtualFile.FileSize)
{
Marshal.WriteInt32(bytesReadPtr, 0);
OnComplete();
return;
}
//using await will break the dragdrop operation!
byte[] data = SourceVirtualFile.ReadDelegate(SourceVirtualFile.RemoteAccessToken, SourceVirtualFile.FileOperationId, SourceVirtualFile.FileRequestId, bufferSize).Result;
//check that close has not been called
if (closeStream || data.Length == 0)
{
Marshal.WriteInt32(bytesReadPtr, -1);
return;
}
//copy the data to the buffer, and write the length of the data to BytesReadPtr
Buffer.BlockCopy(data, 0, buffer, 0, data.Length);
Marshal.WriteInt32(bytesReadPtr, data.Length);
readLen += data.Length;
}
catch (Exception ex)
{
ISLogger.Write("ManagedRemoteIStream: Failed to read remote file: " + ex.Message);
}
}
