下面是我的代码,第一部分是我引发事件的地方,第二部分是我在另一个类中使用它的地方。这看起来很直接,但是日志显示,即使事件被引发一次,事件也会在使用此事件的类上触发20次以上。有什么想法吗?IBSerialPort
等级:
public delegate void PacketReceivedHandler(object sender, PacketReceivedEventArgs e);
public event PacketReceivedHandler OnPacketReceived;
public class PacketReceivedEventArgs : EventArgs
{
public Packet PacketReceived { get; private set; }
public PacketReceivedEventArgs(Packet packet)
{
PacketReceived = packet;
}
}
// raise event
if (OnPacketReceived != null)
{
Log("This is only called ONCE!");
PacketReceivedEventArgs args = new PacketReceivedEventArgs(data);
OnPacketReceived(this, args);
}
使用
IBSerialPort
并使用其OnPacketReceived
事件的类:IBSerialPort ibSerialPort = null;
..
if (ibSerialPort == null)
{
Log("This is only called once");
ibSerialPort = IBSerialPort.Instance;
ibSerialPort.OnPacketReceived += ibSerialPort_OnPacketReceived;
}
void ibSerialPort_OnPacketReceived(object sender, IBSerialPort.PacketReceivedEventArgs args)
{
Log("This is called ~25 times!!!!");
}
最佳答案
请尝试此操作,这将注销所有上一个订阅服务器:
ibSerialPort.OnPacketReceived -= ibSerialPort_OnPacketReceived; // unregister
ibSerialPort.OnPacketReceived += ibSerialPort_OnPacketReceived; //register