c# - Why I can't recieved messages from Chat Server? -

why can't recieved messages chat server ?

i developed chat client in visual studio c# mono android. want receive mesagens chat server sent chat client may receiving them , can not seem show in text1.text

the source code chat client receiving messages:

  //criado por ecoduty, frederico vaz    using system;   using android.app;   using android.content;   using android.runtime;   using android.views;   using android.widget;   using android.os;    //  using system.collections.generic;  using system.componentmodel;  using system.data;  using system.text;  using system.net;  using system.net.sockets;  using system.io;  using system.threading;  using system.runtime.interopservices;   namespace chatclient_android { [activity(label = "chatclient_android", mainlauncher = true, icon = "@drawable/icon")] public class mainchat : activity {      public delegate void onrecievedmessage(string message);      public mainchat form;     const int wm_vscroll = 0x115;     const int sb_bottom = 7;      textview text1;      protected override void oncreate(bundle bundle)     {         base.oncreate(bundle);          // set our view "main" layout resource         setcontentview(resource.layout.main);          // our button layout resource,         // , attach event         button ligar = findviewbyid<button>(resource.id.btligar);         text1 = findviewbyid<textview>(resource.id.text1);        //conexão com o servidor          ligar.click += delegate         {             connect();             ligar.enabled = false;          };      }      //função actualizar caixa de entrada de mensagens      private void updatetextbox(string text)     {         text1.text += "\r\n";         text1.text += text;     }      //recieved mesages     public void recievedmessage(string message)     {        updatetextbox(message);         }     //tcp connection     public streamwriter outgoing;     private streamreader incoming;     private tcpclient connection;     private thread messages;     private ipaddress ip;     //public string host;     //public string nick;     //mainchat m_parentform;     bool isconnected;      //função conectar     public void connect()     {         try         {             ip = ipaddress.parse("10.0.2.2");             connection = new tcpclient();             connection.connect(ip, 1986);             outgoing = new streamwriter(connection.getstream());             outgoing.writeline("ecoduty");             outgoing.flush();             //m_parentform.vis(true);             messages = new thread(new threadstart(this.communication));             messages.start();         }         catch (exception e) { disconnected(e.message); }     }     private void communication()     {         incoming = new streamreader(connection.getstream());         string check = incoming.readline();         if (check[0] == '1')         {             //vis(true);             isconnected = true;         }         else         {             string reason = "disconnected: ";             reason += check.substring(2, check.length - 2);             disconnected(reason);             return;         }         while (isconnected == true)         {             try             {                 servermessage(incoming.readline());             }             catch (exception e)             {                 if (isconnected == true)                 {                     disconnected("connection server lost");                     console.writeline("connection lost: " + e.tostring());                 }                 break;             }         }     }     private void servermessage(string message)     {         try         {             recievedmessage(message);         }         catch { }     }     public void closeconnection()     {         isconnected = false;         incoming.close();         outgoing.close();         connection.close();         messages.abort();     }     public void sendmessage(string message)     {         outgoing.writeline(message);         outgoing.flush();     }    } 

}

you seem trying update text non ui thread (if follow calls stack see method triggered dedicated thread spawn):

private void updatetextbox(string text) {     text1.text += "\r\n";     text1.text += text; } 

instead use runonuithread() schedule text change run on ui thread:

private void updatetextbox(string text) {     runonuithread(() =>     {       text1.text += "\r\n";       text1.text += text;     }); } 

also should rid of empty exception catching along way - masked problem.

also check catlog exceptions indicator.