阅读量:2
在C#中,可以通过事件来传递数据,其中EventArgs类用于封装事件参数。下面是一个简单的示例:
首先,定义一个包含事件的类:
public class DataEventArgs : EventArgs { public string Data { get; set; } public DataEventArgs(string data) { Data = data; } } public class DataPublisher { public event EventHandler<DataEventArgs> DataPublished; public void PublishData(string data) { OnDataPublished(new DataEventArgs(data)); } protected virtual void OnDataPublished(DataEventArgs e) { DataPublished?.Invoke(this, e); } }
然后,创建一个订阅者类来处理事件:
public class DataSubscriber { public void Subscribe(DataPublisher publisher) { publisher.DataPublished += Publisher_DataPublished; } private void Publisher_DataPublished(object sender, DataEventArgs e) { Console.WriteLine("Received data: " + e.Data); } }
最后,在主程序中使用这些类:
public class Program { public static void Main(string[] args) { DataPublisher publisher = new DataPublisher(); DataSubscriber subscriber = new DataSubscriber(); subscriber.Subscribe(publisher); publisher.PublishData("Hello, World!"); Console.ReadLine(); } }
当调用publisher.PublishData("Hello, World!")
时,事件将被触发,然后订阅者类中的Publisher_DataPublished
方法将被执行,并打印出接收到的数据。