Fixed #1117 (#1118)

* Fixed #1117

* Fixes DatePicker misalignment between picker and bottom line. Changed default alignment to center for DatePicker,TimePicker controls.

* Fixing alignment between date picker and time picker controls.

* Removing un-needed vertical alignment setter.

Author: sanke

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.DatePicker.xaml

@@ -10,7 +10,7 @@
 
     <converters:TextFieldHintVisibilityConverter x:Key="TextFieldHintVisibilityConverter" />
     <converters:MathConverter Operation="Divide" x:Key="DivisionMathConverter" />
-    
+
     <Style x:Key="MaterialDesignDatePickerTextBox" TargetType="{x:Type DatePickerTextBox}">
         <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type FrameworkElement}}, Path=(TextElement.Foreground)}" />
         <Setter Property="wpf:TextFieldAssist.TextBoxViewMargin" Value="0 0 0 0" />
@@ -100,6 +100,7 @@
     </Style>
 
     <Style x:Key="MaterialDesignDatePicker" TargetType="{x:Type DatePicker}">
+        <Setter Property="VerticalAlignment" Value="Center" />
         <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type FrameworkElement}}, Path=(TextElement.Foreground)}" />
         <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesignTextBoxBorder}" />
         <Setter Property="Background" Value="Transparent" />
@@ -168,8 +169,8 @@
                                         Focusable="False"
                                         HorizontalAlignment="Right"
                                         Margin="4 0 0 -3"
-                                        Grid.Row="0"
-                                        Template="{StaticResource DropDownButtonTemplate}" Padding="0"
+                                        Template="{StaticResource DropDownButtonTemplate}" 
+                                        Padding="0"
                                         Height="17" />
                                 <DatePickerTextBox x:Name="PART_TextBox"
                                                    Grid.Column="0"

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TimePicker.xaml

@@ -9,14 +9,13 @@
     <converters:MathConverter Operation="Divide" x:Key="DivisionMathConverter" />
 
     <Style x:Key="MaterialDesignTimePicker" TargetType="{x:Type wpf:TimePicker}">
-		<Setter Property="VerticalAlignment" Value="Top"/>
+		<Setter Property="VerticalAlignment" Value="Center"/>
 		<Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type FrameworkElement}}, Path=(TextElement.Foreground)}"/>
 		<Setter Property="BorderBrush" Value="{DynamicResource MaterialDesignTextBoxBorder}" />
 		<Setter Property="Background" Value="Transparent"/>
 		<Setter Property="BorderThickness" Value="0 0 0 1"/>
 		<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
         <Setter Property="IsTabStop" Value="False"/>
-        <Setter Property="Margin" Value="0 12 0 0" />
         <Setter Property="wpf:HintAssist.Hint" Value="Select time" />
         <Setter Property="ClockStyle" Value="{DynamicResource MaterialDesignClock}" />
         <Setter Property="Validation.ErrorTemplate" Value="{StaticResource MaterialDesignValidationErrorTemplate}"/>
@@ -106,10 +105,15 @@
                                          Margin="0"
                                          Template="{StaticResource TextBoxTemplate}"
                                          />
-                                <Button Grid.Column="1" Foreground="{TemplateBinding BorderBrush}" Focusable="False" HorizontalAlignment="Right" Margin="4 0 0 -3" Grid.Row="0" Padding="0"
-                                        x:Name="PART_Button"
-                                        Height="17"
-                                        Template="{StaticResource DropDownButtonTemplate}" />
+                                <Button x:Name="PART_Button"
+                                        Grid.Column="1" 
+                                        Foreground="{TemplateBinding BorderBrush}" 
+                                        Focusable="False" 
+                                        HorizontalAlignment="Right" 
+                                        Margin="4 0 0 -3" 
+                                        Template="{StaticResource DropDownButtonTemplate}"
+                                        Padding="0"
+                                        Height="17" />
                                 <Popup x:Name="PART_Popup" AllowsTransparency="True" 
                                        Placement="Custom"
                                        CustomPopupPlacementCallback="{x:Static wpf:CustomPopupPlacementCallbackHelper.LargePopupCallback}"