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POParameter count mismatch. Threading
 

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    <p>I am trying to create a server/multi-client chat program. The client side program works perfectly. The problem is at the server's one. When I am clicking the Connect button the client should connect to the server but</p> <pre><code>An unhandled exception of type 'System.Reflection.TargetParameterCountException' occurred in mscorlib.dll Additional information: Parameter count mismatch. </code></pre> <p>comes up and the server program crashes. I am pretty sure that this happens because I want the server side program to save the client's ip and nick name into 2 ListBoxes. My events:</p> <pre><code> private void server_OnClientConnected(object Sender, ConnectedArguments R) { server.BroadCast(R.Name + " has connected."); //That message is shown at client's chat box. //So there is no problem with the connection. UpdateListbox(un_list, R.Name, false); //Here is the problem. It works when I comment out them, //without updating the list boxes of course UpdateListbox(ip_list, R.Ip, false); } </code></pre> <p>when the client is connected.</p> <pre><code> private void server_OnClientDisconnected(object Sender, DisconnectedArguments R) { server.BroadCast(R.Name + " has disconnected."); UpdateListbox(un_list,R.Name,true); UpdateListbox(ip_list, R.Ip, true); } </code></pre> <p>when the clients is disconnected.</p> <p>My method:</p> <pre><code> public delegate void UpdateList(ListBox box,object value,bool Remove); private void UpdateListbox(ListBox box, object value, bool Remove) { if (box.Dispatcher.CheckAccess()) { if (value != null &amp;&amp; Remove==false) box.Items.Add(value); else if (value != null &amp;&amp; Remove==true) box.Items.Remove(value); } else { box.Dispatcher.Invoke(new UpdateList(UpdateListbox), value); } } </code></pre> <p>Thanks in advance, George</p>
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    1. USGeorgeChond
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