远程事件问题[C＃] [英] Remote Events Issue[C#]
问题描述
我正在尝试使用远程事件从服务器调用客户端上存在的回调方法。但是我遇到了这个我不明白的问题...我要把我的代码放在这里和堆栈跟踪...希望有人可以用它做出一些东西......：
如果你觉得我我的道歉，我已经解释了我的问题，而不是粘贴我的代码。只是因为我无法用正确的话说出来......对不起......希望有人可以帮助我...
共享装配
一般性用户：
public delegate void EventHandling（string msg）;
公共类RemoteEvents：MarshalByRefObject
{
public void MyMethod（string msg）
{
try
{
if（
if（ myActualHandler！= null）//此处没有问题。
myActualHandler（msg）; //问题！我不知道为什么...
else
Console.WriteLine（"问题注册事件"）;
}
catch（异常e）//此处捕获异常。
{
MessageBox.Show（e.StackTrace.ToString（））;
}
}
公共事件EventHandling myActualHandler;
公共覆盖对象InitializeLifetimeService（）
{
//此对象必须生存"永远"
返回null;
}
}
//事件包装器类，用于为服务器和客户端提供服务器调用的方法的共享//定义。
public class EventWrapper：MarshalByRefObject
{
public event EventHandling myLocalHandler;
//控制永远不会到达这个地方。
[OneWay]
public void MyLocalHandlerMethod（string msg）
{
try
{
if（myLocalHandler！= null）
myLocalHandler（msg）;
else
Console.WriteLine（"问题注册myLocalHandler事件"）;
}
catch（例外e）
{
Console.WriteLine（"问题与MyLocalHandlerMethod !!!"）;
Console.WriteLine（" {0}"，e.StackTrace）;
}
}
公共覆盖对象InitializeLifetimeService（）
{
//此对象必须生存"永远"
返回null;
}
}
客户：
public partial class Form1：Form
{
RemoteEvents remObj;
public Form1（）
{
InitializeComponent（）;
}
private void Form1_Load（object sender，EventArgs e）
{
//在这里创建远程对象：
remObj = （RemoteEvents）Activator.GetObject（typeof（General.RemoteEvents），" tcp：// server：30300 / RemoteEvents.rem"）;
EventWrapper eventWrapper = new EventWrapper（）;
eventWrapper.myLocalHandler + = new EventHandling（myHandlerMethod）;
remObj.myActualHandler + = new EventHandling（eventWrapper.MyLocalHandlerMethod）;
}
//服务器引发事件时要调用的方法。
public void myHandlerMethod（String msg）
{
MessageBox.Show（msg）;
}
//这是在服务器上引发事件然后回调上面的方法
private void button1_Click（object sender，EventArgs e ）
{
remObj.MyMethod（"Remote Event Handled !!!"）;
}
}
服务器：
服务器是控制台应用程序。重要的是这个：
BinaryServerFormatterSinkProvider formatterBin =
new BinaryServerFormatterSinkProvider（）;
formatterBin.TypeFilterLevel = TypeFilterLevel.Full;
我将TypeFilterLevel设置为FULL，允许回调功能。
堆栈跟踪错误：<在System.Runtime.Remoting.Proxies.RemotingProxy.InternalInvoke（IMethodCallMessage reqMcmMsg，Boolean useDispatchMessage，Int32 callType）
at System.Runtime.Remoting.Proxies，
.RemotingProxy.Invoke（IMessage reqMsg）
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke（MessageData& msgData，Int32 type）
at General.EventWrapper.MyLocalHandlerMethod（String msg）
在General.RemoteEvents.MyMethod（String msg）
你可以包括异常以及微量
I am trying to invoke a callback method present on my client from the server using remote events. but i am running into this problem which i dont understand... I am going to put my code here and the stack trace... hope someone can make something out of it...:
If you feel that i sould have explained my problem instead of pasting my code, my apologies. Its just that i am not able to put it in right words... sorry... hope someone can help me...
Shared assembly
General.dll:
public delegate void EventHandling(string msg);
public class RemoteEvents: MarshalByRefObject
{
public void MyMethod(string msg)
{
try
{
if (myActualHandler != null)//No issues here.
myActualHandler(msg);// PROBLEM! i dont know why...
else
Console.WriteLine("Problem Registering event");
}
catch (Exception e)// the exception is caught here.
{
MessageBox.Show(e.StackTrace.ToString());
}
}
public event EventHandling myActualHandler;
public override object InitializeLifetimeService()
{
// this object has to live "forever"
return null;
}
}
// Event wrapper class used to provide the server and the client with a shared //definition of the method to be called by the server.
public class EventWrapper : MarshalByRefObject
{
public event EventHandling myLocalHandler;
// Control never reaches this place.
[OneWay]
public void MyLocalHandlerMethod(string msg)
{
try
{
if(myLocalHandler != null)
myLocalHandler(msg);
else
Console.WriteLine("Problem Registering myLocalHandler event");
}
catch (Exception e)
{
Console.WriteLine("Problem with MyLocalHandlerMethod!!!");
Console.WriteLine("{0}", e.StackTrace);
}
}
public override object InitializeLifetimeService()
{
// this object has to live "forever"
return null;
}
}
Client:
public partial class Form1 : Form
{
RemoteEvents remObj;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
// Creating the remote Object here:
remObj = (RemoteEvents)Activator.GetObject(typeof(General.RemoteEvents), "tcp://server:30300/RemoteEvents.rem");
EventWrapper eventWrapper = new EventWrapper();
eventWrapper.myLocalHandler += new EventHandling(myHandlerMethod);
remObj.myActualHandler += new EventHandling(eventWrapper.MyLocalHandlerMethod);
}
// the method to be called when the event is raised by the server.
public void myHandlerMethod(String msg)
{
MessageBox.Show(msg);
}
// this is to raise an event at the server which then calls back the above //method
private void button1_Click(object sender, EventArgs e)
{
remObj.MyMethod("Remote Event Handled!!!");
}
}
Server:
the server is a console app. the important part is this:
BinaryServerFormatterSinkProvider formatterBin =
new BinaryServerFormatterSinkProvider();
formatterBin.TypeFilterLevel = TypeFilterLevel.Full;
I am setting the TypeFilterLevel to FULL which allows callback functionality.
Stack Trace of the error:
at System.Runtime.Remoting.Proxies.RemotingProxy.InternalInvoke(IMethodCallMessage reqMcmMsg, Boolean useDispatchMessage, Int32 callType)
at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(IMessage reqMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at General.EventWrapper.MyLocalHandlerMethod(String msg)
at General.RemoteEvents.MyMethod(String msg)
Could you include the exception along with the trace?
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