当事件被引发一次时,多次调用c#事件处理程序

概述下面是我的代码,首先是我提出事件的地方,第二部分是我在另一个类中使用它的地方.它看起来很简单,但是日志显示即使事件被提升一次,事件也会在消耗此事件的类上触发20次.有任何想法吗？ IBSerialPort类： public delegate void PacketReceivedHandler(object sender, PacketReceivedEventArgs e);public ev 下面是我的代码,首先是我提出事件的地方,第二部分是我在另一个类中使用它的地方.它看起来很简单,但是日志显示即使事件被提升一次,事件也会在消耗此事件的类上触发20次.有任何想法吗？

IBSerialPort类：

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 eventif (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!!!!");}

解决方法 试试这个,这将取消注册任何普通用户：

ibSerialPort.OnPacketReceived -= ibSerialPort_OnPacketReceived;   // unregisteribSerialPort.OnPacketReceived += ibSerialPort_OnPacketReceived;  //register

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