请参考一次:
http://***.com/questions/2484226/invoking-eventhandler-generic-targetparametercountexception [ ^ ]

please refer once:
http://***.com/questions/2484226/invoking-eventhandler-generic-targetparametercountexception[^]

如果您知道要调用的方法，则

If you know which method you are calling then

string s = (string)this.Invoke(new MyDelegate(MyMethod), new object[] { 10 });

只是没有意义的

is pointless just do

string s = MyMethod(10);

但是，如果您的方法是动态的，则将其设置为

However if your method is dynamic then it would be set somewhere like

private MyDelegate _mydelegate;

public void SetDelegate(MyDelegate del)
{
   _mydelegate = del;
}

你会用
称呼它

and you would call this by

private void somemethod()
{
     string s = _del(10); //using the defined delegate
}