嗨,有没有人有可行的示例代码来复制文件并支持在源已断开连接的情况下恢复它们?
在此示例中,我正在复制视频文件。如果源已断开,即 USB 已拔出,我如何支持再次恢复它们?我在stackoverflow上尝试了一些代码,但恢复后,视频文件似乎已损坏。FileStream 是视频传输/恢复的最佳解决方案吗?
欢迎任何其他指针或提示。
private void CreateNewCopyTo(FileStream source, FileStream dest) {
int size = (source.CanSeek) ? Math.Min((int)(source.Length - source.Position), 0x2000) : 0x2000;
byte[] buffer = new byte[size];
int read;
long fileLength = source.Length;
while ((read = source.Read(buffer, 0, buffer.Length)) > 0) {
dest.Write(buffer, 0, read);
dest.Close();
dest = new FileStream(dest.Name, FileMode.Append, FileAccess.Write);
}
dest.Close();
}
private void ResumeCopyTo(FileStream source, FileStream dest) {
int size = (source.CanSeek) ? Math.Min((int)(source.Length - source.Position), 0x2000) : 0x2000;
byte[] buffer = new byte[size];
long TempPos = source.Position;
while (true) {
int read = source.Read(buffer, 0, buffer.Length);
if (read <= 0)
return;
dest.Write(buffer, 0, read);
dest.Close();
dest = new FileStream(dest.Name, FileMode.Append, FileAccess.Write);
}
}