Visual C#多线程参数传递浅析(2)

// passed parameter by asynchronous delegate
delegate string MyMethod3Delegate(string parameter);
private void button3_Click(object sender, System.EventArgs e) {
　MyClass instance = new MyClass();
　MyMethod3Delegate myMethod3 = new MyMethod3Delegate(instance.MyMethod3);
　myMethod3.BeginInvoke("parameterValue",new AsyncCallback(AfterMyMothod3),null);
}
public void AfterMyMothod3(IAsyncResult result){
　AsyncResult async = (AsyncResult) result;
　MyMethod3Delegate DelegateInstance = (MyMethod3Delegate) async.AsyncDelegate;
　Console.WriteLine ("函数调用返回值：{0}\n", DelegateInstance.EndInvoke(result));
}

// mutil-parameters passed
delegate string MyMutilParamsDelegate(string parameter1,string parameter2);
private void button4_Click(object sender, System.EventArgs e) {
　MyClass instance = new MyClass();
　MyMutilParamsDelegate mutilParams = new MyMutilParamsDelegate(instance.MyMutilParameters);
　mutilParams.BeginInvoke("param1","params2",new AsyncCallback(AfterMutilParams),null);
}
public void AfterMutilParams(IAsyncResult result){
　AsyncResult async = (AsyncResult) result;
　MyMutilParamsDelegate DelegateInstance = (MyMutilParamsDelegate) async.AsyncDelegate;
　Console.WriteLine ("多参数函数调用返回结果：{0}\n", DelegateInstance.EndInvoke(result));
}