public List <string> DoSomething()
{
List <string> strList = new List <string>();
if (Demo == null)
{
return(strList);
}
Delegate[] delArray = Demo.GetInvocationList();
foreach (Delegate del in delArray)
{
DemoEventHandler method = (DemoEventHandler)del;
strList.Add(method(100));
}
return(strList);
}
public event DemoEventHandler NumberChanged; // 声明一个事件
public List <string> DoSomething()
{
// 做某些其他的事
List <string> strList = new List <string>();
if (NumberChanged == null)
{
return(strList);
}
// 获得委托数组
Delegate[] delArray = NumberChanged.GetInvocationList();
foreach (Delegate del in delArray)
{
// 进行一个向下转换
DemoEventHandler method = (DemoEventHandler)del;
strList.Add(method(100)); // 调用方法并获取返回值
}
return(strList);
}
