private void btn_Monitor_Click(object sender, EventArgs e)
{
btn_Monitor.Text = btn_Monitor.Text == "开启监控" ? "关闭监控" : "开启监控";
ICaptureDevice dev = _devices.FirstOrDefault(x => x.ToString() == cb_NetworkCard.Text.ToString());
if (dev != null)
{
int readTimeoutMilliseconds = 1000;
if (btn_Monitor.Text == "关闭监控")
{
dev.OnPacketArrival += new PacketArrivalEventHandler(device_OnPacketArrival);
if (dev is SharpPcap.WinPcap.WinPcapDevice)
{
var winPcap = dev as SharpPcap.WinPcap.WinPcapDevice;
winPcap.Open(SharpPcap.WinPcap.OpenFlags.DataTransferUdp | SharpPcap.WinPcap.OpenFlags.NoCaptureLocal, readTimeoutMilliseconds);
//winPcap.Open(SharpPcap.WinPcap.OpenFlags.Promiscuous, readTimeoutMilliseconds);
}
if (dev is SharpPcap.LibPcap.CaptureFileReaderDevice)
{
var reader = dev as SharpPcap.LibPcap.CaptureFileReaderDevice;
reader.Open();
}
// Start the capturing process
dev.StartCapture();
}
else
{
dev.OnPacketArrival -= new PacketArrivalEventHandler(device_OnPacketArrival);
if (dev is SharpPcap.WinPcap.WinPcapDevice)
{
var winPcap = dev as SharpPcap.WinPcap.WinPcapDevice;
winPcap.Close();
}
if (dev is SharpPcap.LibPcap.CaptureFileReaderDevice)
{
var reader = dev as SharpPcap.LibPcap.CaptureFileReaderDevice;
reader.Close();
}
// Stop the capturing process
dev.StopCapture();
}
}
}