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diff --git a/source/ShiftUI/Enums/SelectionRange.cs b/source/ShiftUI/Enums/SelectionRange.cs
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+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// Copyright (c) 2004-2005 Novell, Inc.
+//
+// Authors:
+//	John BouAntoun	[email protected]
+//
+
+using System.ComponentModel;
+using System;
+
+namespace ShiftUI {
+	[TypeConverter(typeof(SelectionRangeConverter))]
+	public sealed class SelectionRange {
+		#region local members 
+	
+		DateTime end;
+		DateTime start;	
+
+		#endregion // local members 
+
+		#region public constructors
+
+		// default parameterless construcor, use default values
+		public SelectionRange () {
+			end = DateTime.MaxValue.Date;
+			start = DateTime.MinValue.Date;
+		}	
+	
+		// constructor that receives another range, copies it's Start and End values
+		public SelectionRange (SelectionRange range) {
+			end = range.End;
+			start = range.Start;
+		}
+
+		// constructor that receives two dates, uses the lower of the two as start
+		public SelectionRange (DateTime lower, DateTime upper) {
+			if (lower <= upper) {
+				end = upper.Date;
+				start = lower.Date;
+			} else {
+				end = lower.Date;
+				start = upper.Date;
+			}
+		}
+
+		#endregion // public constructors
+
+		#region public properties
+
+		// end date of this range
+		public DateTime End {
+			set {
+				if (end != value) {
+					end = value;
+				}
+			}
+			get {
+				return end;
+			}
+		}
+
+		// start date of this range
+		public DateTime Start {
+			set {
+				if (start != value) {
+					start = value;
+				}
+			}
+			get {
+				return start;
+			}
+		}
+			
+		#endregion // public properties
+
+		#region public methods
+
+		public override string ToString() {
+			return "SelectionRange: Start: " + Start.ToString() + ", End: " + End.ToString();
+		}
+
+		#endregion // public methods
+	}
+}