--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MetroWpf/MetroWpf.Xaml/Converters/AgeToReadableStringConverter.cs	Mon Mar 12 23:05:21 2012 +0800
@@ -0,0 +1,70 @@
+using System;
+using System.Windows.Data;
+using System.Globalization;
+
+namespace MetroWpf.Xaml.Converters
+{
+    public class AgeToReadableTextConverter: IValueConverter
+    {
+        #region IValueConverter Members
+
+        /// <summary>
+        /// Converts a DateTime into a string.
+        /// </summary>
+        /// <param name="value">The DateTime to convert.</param>
+        /// <param name="targetType">The target type of the conversion.</param>
+        /// <param name="parameter">The conversion parameter.</param>
+        /// <param name="culture">The conversion culture.</param>
+        /// <returns>A string representation of the provided date and time.</returns>
+        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            string dateTimeString = string.Empty;
+            DateTime inputDateTime = DateTime.MinValue;
+
+            if (value != null)
+            {
+                if (DateTime.TryParse(value.ToString(), CultureInfo.InvariantCulture, DateTimeStyles.None, out inputDateTime))
+                {
+                    var diff = DateTime.Now - inputDateTime;
+                    if (diff.TotalDays >= ( 1.0 - .5/24 ))
+                    {
+                        if (diff.TotalDays > 1.25)
+                            dateTimeString = string.Format("{0} days ago", RoundToHalf(diff.TotalDays));
+                        else
+                            dateTimeString = "1 day ago";
+                    }
+                    else if (diff.TotalHours > 8)
+                        dateTimeString = string.Format("{0} hours ago", RoundToHalf(diff.TotalHours));
+                    else if (diff.TotalHours > 1)
+                        dateTimeString = string.Format("{0} hours {1} minutes ago", diff.Hours, diff.Minutes);
+                    else
+                        dateTimeString = string.Format("{0} minutes ago", diff.Minutes);
+                }
+            }
+
+            return dateTimeString;
+        }
+
+        private double RoundToHalf(double p)
+        {
+            int doubleValue = (int)( (p+.25) * 2 );
+            return (double)doubleValue / 2.0;
+        }
+
+        /// <summary>
+        /// Converts a date and time string into a DateTime object.  Not implemented.
+        /// </summary>
+        /// <param name="value">The string to convert.</param>
+        /// <param name="targetType">The target type of the conversion.</param>
+        /// <param name="parameter">The conversion parameter.</param>
+        /// <param name="culture">The conversion culture.</param>
+        /// <returns>A DateTime object of the provided string.  Not implemented.</returns>
+        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+
+        #endregion
+    }
+    
+}