HDI send a final msg via TcpClient before my class closes?

Question

Hi Guys Im having trouble sending a final command to a service before my class closes. I have a startupclient that starts when my application starts and attempts to send a QUIT message from the class destructor as the class is closing. Unfortunately when calling SendCommand(QUIT) from the class destructor I get an exception from the SendCommand method. System.ObjectDisposedException was unhandled HResult=-2146232798 Message=Cannot access a disposed object. Object name: 'System.Net.Sockets.TcpClient'. ObjectName=System.Net.Sockets.TcpClient Source=System StackTrace: at System.Net.Sockets.TcpClient.GetStream() at Skeleton.Classes.clsStartupClient.SendCommand(String Command String Param) at Skeleton.Classes.clsStartupClient.SendCommand(String Command) at Skeleton.Classes.clsStartupClient.Finalize() InnerException: on the line below in the SendCommand() method. StreamWriter wtr = new StreamWriter(Cli.GetStream()); How would I be able to send a final SendCommand message before the class closes? Thanks in advance.

Donald C · Answer

Hi Bhuvanesh Thanks for your reply. You're right I do believe the class object has been closed \ destructed by the time I try to send the command. Unfortunately I cant use the Using \ Try catch options because I open the TcpClient in a class constructor when the application starts and try to close it in the destructor of that class.. public class clsStartupClient { public clsStartupClient() { string strServer; int iPort; GetStartupParameters(out strServer out iPort); if (Cli.Connected) throw new Exception(Tcp Client Already connected.); try { Cli.SendTimeout = 15000; Cli.Connect(strServer iPort); } catch (Exception ex) { MessageBox.Show(ex.ToString()); Cli.Close(); } } ~clsStartupClient() { //if (Cli != null) //{ // SendCommand(QUIT); // Cli.GetStream().Close(); // Cli.Close(); // Cli = null; //} } Im getting the error when I try to send the final QUIT command. SendCommand(QUIT); Is there a better way to do this? Any help would be appreciated thanks.

Bhuvanesh Mohankumar · Answer

This is because you are trying to access a class object which was already destructed/disposed. Before you trigger the dispose try to have a catch block where don't handle the exception rather just throw the error using keyword throwand then youtrigger for the dispose of object. If you have used Using keyword in your application in this module try to implement the try catch block inside the using scope itself. Mark as answer if found helpful.