C#编程

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EventListener.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace EventListener
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class EventListenerForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.ListBox listBoxEvents;
		private System.Windows.Forms.Button buttonExit;
		private System.Diagnostics.EventLog eventLogQuote;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
		public EventListenerForm()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();
			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}
		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.listBoxEvents = new System.Windows.Forms.ListBox();
			this.buttonExit = new System.Windows.Forms.Button();
			this.eventLogQuote = new System.Diagnostics.EventLog();
			((System.ComponentModel.ISupportInitialize)(this.eventLogQuote)).BeginInit();
			this.SuspendLayout();
			// 
			// listBoxEvents
			// 
			this.listBoxEvents.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.listBoxEvents.Location = new System.Drawing.Point(8, 16);
			this.listBoxEvents.Name = "listBoxEvents";
			this.listBoxEvents.Size = new System.Drawing.Size(280, 160);
			this.listBoxEvents.TabIndex = 0;
			// 
			// buttonExit
			// 
			this.buttonExit.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.buttonExit.Location = new System.Drawing.Point(104, 192);
			this.buttonExit.Name = "buttonExit";
			this.buttonExit.TabIndex = 1;
			this.buttonExit.Text = "Exit";
			this.buttonExit.Click += new System.EventHandler(this.buttonExit_Click);
			// 
			// eventLogQuote
			// 
			this.eventLogQuote.EnableRaisingEvents = true;
			this.eventLogQuote.Log = "Application";
			this.eventLogQuote.Source = "QuoteService";
			this.eventLogQuote.SynchronizingObject = this;
			this.eventLogQuote.EntryWritten += new System.Diagnostics.EntryWrittenEventHandler(this.OnEntryWritten);
			// 
			// EventListenerForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(296, 221);
			this.Controls.Add(this.buttonExit);
			this.Controls.Add(this.listBoxEvents);
			this.Name = "EventListenerForm";
			this.Text = "Quote Service Event Listener";
			((System.ComponentModel.ISupportInitialize)(this.eventLogQuote)).EndInit();
			this.ResumeLayout(false);
		}
		#endregion
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new EventListenerForm());
		}
		private void OnEntryWritten(object sender, System.Diagnostics.EntryWrittenEventArgs e)
		{
			DateTime time = e.Entry.TimeGenerated;
			string message = e.Entry.Message;
			listBoxEvents.Items.Add(time + " " + message);
		}
		private void buttonExit_Click(object sender, System.EventArgs e)
		{
			Application.Exit();
		}
	}
}

						