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diff --git a/print/v4PrintDriverSamples/PrinterExtensionSample/ExtensionSample/BidiHelper.cs b/print/v4PrintDriverSamples/PrinterExtensionSample/ExtensionSample/BidiHelper.cs
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+// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// Copyright (c) Microsoft Corporation. All rights reserved
+//
+//
+// Abstract:
+//
+//     This file contains helper methods that provide a data-binding friendly way to access and parse bidi response data.
+
+using System;
+using System.Collections.Generic;
+using System.Windows.Media;
+using System.Xml;
+
+namespace Microsoft.Samples.Printing.PrinterExtension.Helpers
+{
+    /// <summary>
+    /// Provide a data-binding friendly way to access and parse bidi response data.
+    /// </summary>
+    public class BidiHelper
+    {
+        /// <summary>
+        /// Parse the bidi response.
+        /// </summary>
+        /// <param name="bidiResponse">Bidi response XML data.</param>
+        public BidiHelper(string bidiResponse)
+        {
+            BidiResponseParser parser = new BidiResponseParser(bidiResponse);
+            InkLevelC = parser.GetInkLevel(Colors.Cyan);
+            InkLevelM = parser.GetInkLevel(Colors.Magenta);
+            InkLevelY = parser.GetInkLevel(Colors.Yellow);
+            InkLevelK = parser.GetInkLevel(Colors.Black);
+        }
+
+        /// <summary>
+        /// Get the Cyan ink level.
+        /// </summary>
+        public double InkLevelC
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Get the Magenta ink level.
+        /// </summary>
+        public double InkLevelM
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Get the Yellow ink level.
+        /// </summary>
+        public double InkLevelY
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Get the Black ink level.
+        /// </summary>
+        public double InkLevelK
+        {
+            get;
+            private set;
+        }
+    }
+
+    /// <summary>
+    /// This class parses bidi response xml data and provides wrapper methods that operate upon the xml.
+    /// </summary>
+    internal class BidiResponseParser
+    {
+        /// <summary>
+        /// Parse the bidi response.
+        /// </summary>
+        /// <param name="bidiResponse">Bidi response XML data.</param>
+        internal BidiResponseParser(string bidiResponse)
+        {
+            bidiData = new XmlDocument();
+            bidiData.LoadXml(bidiResponse);
+
+            namespaceManager = new XmlNamespaceManager(bidiData.NameTable);
+            namespaceManager.AddNamespace("bidi", "http://schemas.microsoft.com/windows/2005/03/printing/bidi");
+        }
+
+        /// <summary>
+        /// Get the ink level for a given color.
+        /// </summary>
+        /// <param name="color">Color</param>
+        /// <returns>Ink level percentage</returns>
+        internal double GetInkLevel(Color color)
+        {
+            XmlElement root = bidiData.DocumentElement;
+            XmlNode inkNode = root.SelectSingleNode(CreateInkXPathQuery(color), namespaceManager);
+            return double.Parse(inkNode.FirstChild.Value) / 100;
+        }
+
+        /// <summary>
+        /// Create an XPath query that retrieves the ink level from a standard bidi response.
+        /// </summary>
+        /// <param name="color"></param>
+        /// <returns></returns>
+        private static string CreateInkXPathQuery(Color color)
+        {
+            string colorName = null;
+
+            if (color.Equals(Colors.Black))
+            {
+                colorName = "Black";
+            }
+            else if (color.Equals(Colors.Red))
+            {
+                colorName = "Red";
+            }
+            else if (color.Equals(Colors.Green))
+            {
+                colorName = "Green";
+            }
+            else if (color.Equals(Colors.Blue))
+            {
+                colorName = "Blue";
+            }
+            else if (color.Equals(Colors.Cyan))
+            {
+                colorName = "Cyan";
+            }
+            else if (color.Equals(Colors.Magenta))
+            {
+                colorName = "Magenta";
+            }
+            else if (color.Equals(Colors.Yellow))
+            {
+                colorName = "Yellow";
+            }
+            else
+            {
+                throw new ArgumentException("Unsupported color");
+            }
+
+            return "/bidi:Get/Query/Schema[@name='\\Printer.Consumables." + colorName + "Ink" + ":Level']/BIDI_INT";
+        }
+
+        private XmlDocument bidiData;
+        private XmlNamespaceManager namespaceManager;
+    }
+
+}