--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HowTo/Aspects/LoggingAspect.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,63 @@
+using System;
+using System.Threading;
+
+using NUnit.Framework;
+
+using BLToolkit.Aspects;
+using BLToolkit.Reflection;
+
+namespace HowTo.Aspects
+{
+	[TestFixture]
+	public class LoggingAspectTest
+	{
+		[/*[a]*/Log/*[/a]*/]
+		public /*[a]*/abstract/*[/a]*/ class TestClass
+		{
+			// Here we customize the logging settings.
+			// This call will be logged in spite of default settings.
+			//
+			[/*[a]*/Log/*[/a]*/(/*[a]*/MinCallTime=50/*[/a]*/)]
+			public /*[a]*/virtual/*[/a]*/ void Test1(int i)
+			{
+				Thread.Sleep(/*[a]*/100/*[/a]*/);
+			}
+
+			// This call is not going to be logged (see default settings below).
+			//
+			public /*[a]*/virtual/*[/a]*/ void Test2(DateTime dt)
+			{
+				Thread.Sleep(/*[a]*/100/*[/a]*/);
+			}
+
+			// By default exception calls are logged.
+			//
+			public /*[a]*/virtual/*[/a]*/ void Test3(string s)
+			{
+				throw new ApplicationException("Test exception.");
+			}
+		}
+
+		[Test]
+		public void Test()
+		{
+			// By setting MinCallTime to some value, we prevent logging any call
+			// which is shorter than the provided value.
+			//
+			LoggingAspect.MinCallTime = /*[a]*/1000/*[/a]*/;
+
+			TestClass t = /*[a]*/TypeAccessor/*[/a]*/<TestClass>.CreateInstance();
+
+			t.Test1(1);
+			t.Test2(DateTime.Now);
+
+			try
+			{
+				t.Test3("3");
+			}
+			catch
+			{
+			}
+		}
+	}
+}