Ballon tip for notification icon will last for sometime. Is there a way to put the timing to infinite and will only close when i click the X(close) button

how do i program to close notification ballon tip manually. Thanks

say there's a server program lauch in a LAN network and it is listening at port number 2000. 1. Anyone has an idea on how to obtained the ip address for the above mentioned server? 2. Or is it possible to communicate to this port with the condition that ip address for the above server was not given. Hacker pls help

say i was only given port numbers of all running servers in a particular LAN network. Any hint on how to obtained the corresponding ip addresses for these ports? Thanks in advance

TQ

How to find out ip address of a listening port.

Writing C# program to search through network for existing listening server's ip addresses and port numbers assuming that ip address and port number for the server was not known.

Is there a way to (check/scan through network) ip addresses of listening ports in a network

what will be the best timing to consider a connection has broken

Say i have a server running and several client connected to this server. How to program 1)to detect when a client on purpose power down his PC without closing the connection 2)the client's pc hang causing connection to server be disconnected Thanks in advance

Class A{...} void main() { Object o; o=new int(); o=new String(); o=new A(); } What will o eventually point to? if eventually o point to A, then what happen to int and String object? Thanks in advance

Public AsynCallback pfnWorkerCallBack; //Define a global reference public void WaitForData(System.Net.Sockets.Socket soc,int clientNumber) { try { if( pfnWorkerCallBack == null ) {pfnWorkerCallBack = new AsyncCallback (OnDataReceived);} SocketPacket theSocPkt = new SocketPacket (soc, clientNumber); soc.BeginReceive (theSocPkt.dataBuffer, 0, theSocPkt.dataBuffer.Length,SocketFlags.None,pfnWorkerCallBack, theSocPkt); } } public void main() { WaitForData(Socket1,1); WaitForData(Socket2,2); } Question: 1.When the 1st WaitForData(Socket1,1) started, pfnWorkerCallBack is definitely equal to NULL so a new AsynCallback is created and assigned to pfnWorkerCallBack. What happen to pfnWorkerCallBack when the second WaitForData(Socket2,2) started? 2.When a same method was started asynchronously for several times. Are all method's variables refer to the same variables?

Can anyone briefly tell me how asyncallback work. How asyncallback object or variable works, especially when they are used in threading manner. Appreciate if anyone could help out