--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HowTo/DataAccess/Param.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,38 @@
+using System;
+using System.Data;
+
+using NUnit.Framework;
+
+using BLToolkit.Data;
+using BLToolkit.DataAccess;
+
+namespace HowTo.DataAccess
+{
+	[TestFixture]
+	public class Param
+	{
+		public abstract class TestAccessor : DataAccessor
+		{
+			[SqlQuery("SELECT {0} = {1} FROM Person WHERE PersonID = 1")]
+			public abstract void SelectJohn(
+				[/*[a]*/ParamSize/*[/a]*/(50), /*[a]*/ParamDbType/*[/a]*/(DbType.String)] out string name,
+				[Format] string paramName,
+				[Format] string fieldName);
+		}
+
+		[Test]
+		public void AccessorTest()
+		{
+			using (DbManager db = new DbManager())
+			{
+				TestAccessor ta = DataAccessor.CreateInstance<TestAccessor>(db);
+
+				string actualName;
+
+				ta.SelectJohn(out actualName, "@name", "FirstName");
+
+				Assert.AreEqual("John", actualName);
+			}
+		}
+	}
+}