[Mono-list] Visibility of the objects

[Michał Ziemski]

Just remove "static" attribute from OnTimerElapsed method.

Cheers!
Michał Ziemski

Panoramix pisze:
> I am doing the first steps with Mono and C #, and I stalled on a stupid
> problem.
> I implemented a timer that launches an event every X seconds.
> Now when the procedure is called I want to change a label but I can not
> because I receive this message
> "` MainWindow.label2 ': An object reference is required for the nonstatic
> field "
>
> How can I fix?
>
> // MainWindow.cs created with MonoDevelop
> // User: franaria at 11:21 15/05/2008
> //
> // To change standard headers go to Edit->Preferences->Coding->Standard
> Headers
> //
> using System;
> using System.Diagnostics;
>
> using System.IO.Ports;
>
> using System.Net;
>
> using System.Net.Sockets;
>
> using System.Threading;
> using System.Timers;     //per la gestione dei timer
> using Gtk;
> using Modbus.Device;
>
> public partial class MainWindow: Gtk.Window
> {	
> 	private static System.Timers.Timer ourTimer;
> 	
> 	public MainWindow (): base (Gtk.WindowType.Toplevel)
> 	{
> 		Build ();
> 		ourTimer = new System.Timers.Timer();
>
> 		// attach to the Elapsed event.
> 		ourTimer.Elapsed += new ElapsedEventHandler(OnTimerElapsed);
> 		
> 		// make our timer interval 1 second
> 		ourTimer.Interval = 1000;
>     	//Build ();		
> 	}
> 	
> 	protected void OnDeleteEvent (object sender, DeleteEventArgs a)
> 	{
> 		Application.Quit ();
> 		a.RetVal = true;
> 	}
>
> 	protected virtual void Butt1Start (object sender, System.EventArgs e)
> 	{
> 	}
>
> 	protected virtual void OnButton2Clicked (object sender, System.EventArgs e)
> 	{
> 		if (ourTimer.Enabled == false)
> 		{
> 			ourTimer.Enabled = true ;
> 			button2.Label = "Starting read";
> 			}else 
> 		{	
> 			ourTimer.Enabled = false ;
> 			button2.Label = "Start Timed read";
> 			}
> 	}
> 	
> 	 private static void OnTimerElapsed(object sender, ElapsedEventArgs e)
>      {
> 		Console.WriteLine("Timer elapsed at: " + e.SignalTime.ToLongTimeString());
> 		//label2.Text = "Timer elapsed at: " + e.SignalTime.ToLongTimeString();    
> <---  Problem
> 		//button2.Label = "Running Timed Read";                                                 
> <---
>      }
>
> }
>
> Thanks to all :blush:
>
> -----
> :working:
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