--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HowTo/EditableObjects/IsDirty.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,33 @@
+using System;
+using NUnit.Framework;
+using BLToolkit.EditableObjects;
+
+namespace HowTo.EditableObjects
+{
+	[TestFixture]
+	public class IsDirty
+	{
+		public /*[a]*/abstract/*[/a]*/ class TestObject : /*[a]*/EditableObject/*[/a]*/<TestObject>
+		{
+			public /*[a]*/abstract/*[/a]*/ string FirstName { get; set; }
+			public /*[a]*/abstract/*[/a]*/ string LastName  { get; set; }
+		}
+
+		[Test]
+		public void Test()
+		{
+			TestObject obj = TestObject./*[a]*/CreateInstance/*[/a]*/();
+
+			Assert./*[a]*/IsFalse/*[/a]*/(obj./*[a]*/IsDirty/*[/a]*/);
+
+			obj.FirstName = "Tester";
+			obj.LastName  = "Testerson";
+
+			Assert./*[a]*/IsTrue/*[/a]*/(obj./*[a]*/IsDirty/*[/a]*/);
+
+			obj.AcceptChanges();
+
+			Assert./*[a]*/IsFalse/*[/a]*/(obj./*[a]*/IsDirty/*[/a]*/);
+		}
+	}
+}