Added support for DateTimeOffset

RestSharp.Tests/XmlTests.cs

@@ -640,7 +640,42 @@ public void Can_Deserialize_Mixture_Of_Empty_Elements_With_Attributes_And_Popula
 			Assert.Null(output.Id);
 			Assert.Null(output.StartDate);
 			Assert.Equal(new Guid(GuidString), output.UniqueId);
-		}
+		}
+
+        [Fact]
+        public void Can_Deserialize_DateTimeOffset()
+        {
+            var culture = CultureInfo.InvariantCulture;
+            var doc = new XDocument(culture);
+
+            DateTimeOffset DateTimeOffset = new DateTimeOffset(2013, 02, 08, 9, 18, 22, TimeSpan.FromHours(10));
+            DateTimeOffset? NullableDateTimeOffsetWithValue = new DateTimeOffset(2013, 02, 08, 9, 18, 23, TimeSpan.FromHours(10));
+
+            var root = new XElement("Dates");
+            root.Add(new XElement("DateTimeOffset", DateTimeOffset));
+            root.Add(new XElement("NullableDateTimeOffsetWithNull", string.Empty));
+            root.Add(new XElement("NullableDateTimeOffsetWithValue", NullableDateTimeOffsetWithValue));
+
+            doc.Add(root);
+
+            var xml = new XmlDeserializer
+            {
+                Culture = culture,
+            };
+
+            var response = new RestResponse { Content = doc.ToString() };
+
+            var d = new XmlDeserializer()
+            {
+                Culture = culture,
+            };
+            var payload = d.Deserialize<DateTimeTestStructure>(response);
+            Assert.Equal(DateTimeOffset, payload.DateTimeOffset);
+            Assert.Null(payload.NullableDateTimeOffsetWithNull);
+
+            Assert.True(payload.NullableDateTimeOffsetWithValue.HasValue);
+            Assert.Equal(NullableDateTimeOffsetWithValue, payload.NullableDateTimeOffsetWithValue);
+        }
 
 		private static string CreateUnderscoresXml()
 		{
@@ -934,5 +969,6 @@ private static string CreateXmlWithAttributesAndNullValuesAndPopulatedValues()
 
 			return doc.ToString();
 		}
+
 	}
 }

RestSharp/Deserializers/XmlAttributeDeserializer.cs

@@ -55,7 +55,7 @@ public T Deserialize<T>(IRestResponse response)
 				RemoveNamespace(doc);
 			}
 
-            var x = Activator.CreateInstance<T>();
+			var x = Activator.CreateInstance<T>();
 			var objType = x.GetType();
 
 			if (objType.IsSubclassOfRawGeneric(typeof(List<>)))

RestSharp/Deserializers/XmlDeserializer.cs

@@ -22,7 +22,8 @@
 
 using RestSharp.Extensions;
 using System.Globalization;
-using System.Xml;
+using System.Xml;
+using System.ComponentModel;
 
 namespace RestSharp.Deserializers
 {
@@ -168,7 +169,34 @@ private void Map(object x, XElement root)
 					}
 
 					prop.SetValue(x, value, null);
-				}
+				}
+                else if (type == typeof(DateTimeOffset))
+                {
+                    var toConvert = value.ToString();
+                    if (!string.IsNullOrEmpty(toConvert))
+                    {
+                        DateTimeOffset deserialisedValue;
+                        try
+                        {
+                            deserialisedValue = XmlConvert.ToDateTimeOffset(toConvert);
+                            prop.SetValue(x, deserialisedValue, null);
+                        }
+                        catch (Exception)
+                        {
+                            object result;
+                            if (TryGetFromString(toConvert, out result, type))
+                            {
+                                prop.SetValue(x, result, null);
+                            }
+                            else
+                            {
+                                //fallback to parse
+                                deserialisedValue = DateTimeOffset.Parse(toConvert);
+                                prop.SetValue(x, deserialisedValue, null);
+                            }
+                        }
+                    }
+                }
 				else if (type == typeof(Decimal))
 				{
 					value = Decimal.Parse(value.ToString(), Culture);
@@ -209,20 +237,41 @@ private void Map(object x, XElement root)
 					prop.SetValue(x, list, null);
 				}
 				else
-				{
-					// nested property classes
-					if (root != null)
-					{
-						var element = GetElementByName(root, name);
-						if (element != null)
-						{
-							var item = CreateAndMap(type, element);
-							prop.SetValue(x, item, null);
-						}
+				{
+					//fallback to type converters if possible
+					object result;
+					if (TryGetFromString(value.ToString(), out result, type))
+					{
+                        prop.SetValue(x, result, null);
+					}
+					else
+					{
+						// nested property classes
+						if (root != null)
+						{
+							var element = GetElementByName(root, name);
+							if (element != null)
+							{
+								var item = CreateAndMap(type, element);
+								prop.SetValue(x, item, null);
+							}
+						}
 					}
 				}
 			}
-		}
+		}
+
+        private static bool TryGetFromString(string inputString, out object result, Type type)
+        {
+            var converter = TypeDescriptor.GetConverter(type);
+            if (converter.CanConvertFrom(typeof(string)))
+            {
+                result = (converter.ConvertFromInvariantString(inputString));
+                return true;
+            }
+            result = null;
+            return false;
+        }
 
 		private void PopulateListFromElements(Type t, IEnumerable<XElement> elements, IList list)
 		{