--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/DataAccess/ParamNullValue.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,25 @@
+using System;
+using System.ComponentModel;
+
+namespace BLToolkit.DataAccess
+{
+	[AttributeUsage(AttributeTargets.Parameter)]
+	public class ParamNullValueAttribute : Attribute
+	{
+		public ParamNullValueAttribute(object value)
+		{
+			_value = value;
+		}
+
+		public ParamNullValueAttribute(Type type, string value)
+		{
+			_value = TypeDescriptor.GetConverter(type).ConvertFromInvariantString(value);
+		}
+
+		private readonly object _value;
+		public           object  Value
+		{
+			get { return _value; }
+		}
+	}
+}