--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HowTo/DataAccess/Transaction.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,70 @@
+using System;
+
+using NUnit.Framework;
+
+using BLToolkit.Data;
+using BLToolkit.DataAccess;
+using BLToolkit.Mapping;
+
+namespace HowTo.DataAccess
+{
+	[TestFixture]
+	public class Transaction
+	{
+		public abstract class TestAccessor : DataAccessor<Person>
+		{
+			public abstract int  Insert(Person person);
+			public abstract void Delete(int @PersonID);
+
+			public abstract Person SelectByKey(int id);
+			public abstract Person SelectByKey(/*[a]*/DbManager/*[/a]*/ db, int id);
+		}
+
+		// /*[i]*/DataAccessor/*[/i]*/ takes /*[i]*/DbManager/*[/i]*/ as a parameter.
+		//
+		[Test]
+		public void Test1()
+		{
+			using (DbManager db = new DbManager())
+			{
+				TestAccessor ta = DataAccessor.CreateInstance<TestAccessor>/*[a]*/(db)/*[/a]*/;
+
+				ta./*[a]*/BeginTransaction/*[/a]*/();
+
+				int id = ta.Insert(new Person { FirstName = "John", LastName = "Smith" });
+				Assert.AreNotEqual(0, id);
+
+				Person person = ta.SelectByKey(id);
+				Assert.IsNotNull(person);
+
+				ta.Delete(id);
+
+				ta./*[a]*/CommitTransaction/*[/a]*/();
+			}
+		}
+
+		// /*[i]*/DataAccessor/*[/i]*/ method takes /*[i]*/DbManager/*[/i]*/ as a parameter.
+		//
+		[Test]
+		public void Test2()
+		{
+			using (DbManager db = new DbManager())
+			{
+				db.BeginTransaction();
+
+				TestAccessor ta = DataAccessor.CreateInstance<TestAccessor>/*[a]*/()/*[/a]*/;
+
+				int id = ta.Insert(new Person { FirstName = "John", LastName = "Smith" });
+				Assert.AreNotEqual(0, id);
+
+				Person person = ta.SelectByKey(/*[a]*/db/*[/a]*/, id);
+				Assert.IsNotNull(person);
+
+				ta.Delete(id);
+
+				db.CommitTransaction();
+			}
+		}
+	}
+}
+