Added DatePickerRenderer

WinFormsTestApp/Page1.xaml

@@ -46,11 +46,15 @@
             x:Name="openglView"
             Grid.Column="0" Grid.Row="2"
             />-->
-        <BoxView
+        <!--<BoxView
             Color="Blue"
             Rotation="30"
             Scale="0.1"
             Grid.Column="0" Grid.Row="2"
+            />-->
+        <DatePicker
+            x:Name="datePicker"
+            Grid.Column="0" Grid.Row="2"
             />
         <Label
             Grid.Column="1" Grid.Row="2"

Xamarin.Forms.Platform.WinForms/Properties/AssemblyInfo.cs

@@ -51,5 +51,6 @@ using Xamarin.Forms.Platform.WinForms;
 [assembly: ExportRenderer(typeof(Picker), typeof(PickerRenderer))]
 [assembly: ExportRenderer(typeof(ActivityIndicator), typeof(ActivityIndicatorRenderer))]
 [assembly: ExportRenderer(typeof(BoxView), typeof(BoxViewRenderer))]
+[assembly: ExportRenderer(typeof(DatePicker), typeof(DatePickerRenderer))]
 [assembly: ExportRenderer(typeof(OpenGLView), typeof(OpenGLViewRenderer))]
 [assembly: ExportRenderer(typeof(WebView), typeof(WebViewRenderer))]

Xamarin.Forms.Platform.WinForms/Renderers/DatePickerRenderer.cs

@@ -6,20 +6,75 @@ using System.Threading.Tasks;
 
 namespace Xamarin.Forms.Platform.WinForms
 {
-	public class DatePickerRenderer : ViewRenderer<Button, System.Windows.Forms.DateTimePicker>
+	public class DatePickerRenderer : ViewRenderer<DatePicker, System.Windows.Forms.DateTimePicker>
 	{
-		protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
+		protected override void OnElementChanged(ElementChangedEventArgs<DatePicker> e)
 		{
 			if (e.NewElement != null)
 			{
 				if (Control == null)
 				{
 					SetNativeControl(new System.Windows.Forms.DateTimePicker());
+					Control.ValueChanged += DateTimePicker_OnValueChanged;
 				}
 
+				// Update control property 
+				UpdateDate(Control);
+				UpdateMinimumDate(Control);
+				UpdateMaximumDate(Control);
+				UpdateTextColor(Control);
 			}
 
 			base.OnElementChanged(e);
 		}
+
+		void UpdateDate(System.Windows.Forms.DateTimePicker nativeElement)
+		{
+			var element = Element;
+			if (nativeElement != null && element != null)
+			{
+				nativeElement.Value = Element.Date;
+			}
+		}
+
+		void UpdateMaximumDate(System.Windows.Forms.DateTimePicker nativeElement)
+		{
+			var element = Element;
+			if (nativeElement != null && element != null)
+			{
+				nativeElement.MaxDate = Element.MaximumDate;
+			}
+		}
+
+		void UpdateMinimumDate(System.Windows.Forms.DateTimePicker nativeElement)
+		{
+			var element = Element;
+			if (nativeElement != null && element != null)
+			{
+				nativeElement.MinDate = Element.MinimumDate;
+			}
+		}
+
+		void UpdateTextColor(System.Windows.Forms.DateTimePicker nativeElement)
+		{
+			var element = Element;
+			if (nativeElement != null && element != null)
+			{
+				var color = element.TextColor;
+				nativeElement.ForeColor =
+					color == Color.Default ?
+						System.Drawing.SystemColors.ControlText :
+						color.ToWindowsColor();
+			}
+		}
+
+		void DateTimePicker_OnValueChanged(object sender, EventArgs e)
+		{
+			var nativeElement = Control;
+			if (nativeElement != null)
+			{
+				((IElementController)Element).SetValueFromRenderer(DatePicker.DateProperty, nativeElement.Value);
+			}
+		}
 	}
 }