Threads on leaving the asp.net page RSS

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  A6Sr

  Member

  5 Points

  1 Post

  Threads on leaving the asp.net page

  Aug 24, 2004 02:43 PM|LINK

  Edited by SomeNewKid. Please post code between <code> and </code> tags.

  ---

  Hallo, I have 2 IIS Server. On both i have a asp.net script. The first script on the first server connects to the second script on the second server ba an HttpWebRequest-objects. The second asp.net-script sends the xml-answer by Response.Write(). My problem is now that i have to get a thread doing more work after the second script has ended. So before the end of the second script i instanciate a new Thread by a own c#-class.

  ResponseRequester responseRequester = new ResponseRequester();
  responseRequester.setAbsolutePath(Server.MapPath("."));
  responseRequester.setURL(url);
  responseRequester.confirm();

  The class starts the Thread:

  using System;
  using System.Collections;
  using System.Threading;
  using System.Xml;
  
  namespace tinasimulator
  {
  	/// 
  
  	/// Summary description for ResponseRequester.
  	/// 
  	public class ResponseRequester
  	{
  
  		/// 
  
  		/// The url to send the request to.
  		/// 
  		private string url = "";
  		private Thread confirmer = null;
  		private string absolutePath = "";
  
  		public ResponseRequester()
  		{
  		}
  
  
  		public void setAbsolutePath(string absolutePath)
  		{
  			this.absolutePath = absolutePath;
  		}
  
  		///
  
  		///Sets the url to connect to.
  		///
  		public void setURL(String url)
  		{
  			this.url = url;
  		}
  
  		///
  
  		///start the thread to connect to the tinasimulator.
  		///
  		public void confirm()
  		{
  			try
  			{
  				this.confirmer = new Thread(new ThreadStart(this.send));
  				this.confirmer.Name = "confirmer";
  				this.confirmer.Priority = ThreadPriority.Highest;
  				this.confirmer.Start();
  				Logger.log("Thread started");
  			}
  			catch(Exception e)
  			{
  				Logger.log(e.ToString());
  			}
  		}
  
  		public void send()
  		{
                                                  Thread.sleep(5000);
  			//read the server data from a file
  			ConfigLoader configLoader = new ConfigLoader(); 
  			Hashtable config = configLoader.loadConfig					//send the request
  			ServerConnector serverConnector = new ServerConnector();
  			string requestEndXML = 
  				"......";
  			XmlDocument requestEndXMLDocument = new 			requestEndXMLDocument.LoadXml(requestEndXML);
  			serverConnector.sendRequest(requestEndXMLDocument, url, (String) config["user"], (String) config["password"]);
  		}
  
  	}
  }

  The class Server connector connects to another server. I can't do it in another way - sorry. So my problem is that after the page is left the thread crashes. VS.NET2003 says: "An unhandled exception of type 'System.NullReferenceException' occurred in Unknown Module. Additional information: Object reference not set to an instance of an object." So what i am doing wrong to get the thread be alive after the page is over? Thanks for any help.