--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/DataAccess/NonUpdatableAttribute.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,29 @@
+using System;
+
+namespace BLToolkit.DataAccess
+{
+	[Serializable]
+	[AttributeUsage(
+		AttributeTargets.Field | AttributeTargets.Property |
+		AttributeTargets.Class | AttributeTargets.Interface,
+		AllowMultiple = true)]
+	public class NonUpdatableAttribute : Attribute
+	{
+		public NonUpdatableAttribute()
+			: this(true, true, false)
+		{
+		}
+
+		public NonUpdatableAttribute(bool onInsert, bool onUpdate, bool isIdentity)
+		{
+			OnInsert   = onInsert;
+			OnUpdate   = onUpdate;
+			IsIdentity = isIdentity;
+		}
+
+		public bool   OnInsert   { get; set; }
+		public bool   OnUpdate   { get; set; }
+		public bool   IsIdentity { get; set; }
+		public string FieldName  { get; set; }
+	}
+}