Merge pull request #208 from xaviergonz/fixscrollbar

Fix scroll bar for textbox

Author: ButchersBoy

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TextBox.xaml

@@ -18,7 +18,7 @@
         <Setter Property="CaretBrush" Value="{Binding RelativeSource={RelativeSource Self}, Path=BorderBrush}"/>
         <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
         <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
-        <Setter Property="VerticalContentAlignment" Value="Top"/>
+        <Setter Property="VerticalContentAlignment" Value="Stretch"/>
         <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
         <Setter Property="AllowDrop" Value="true"/>        
         <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
@@ -245,4 +245,4 @@
         </Setter>
     </Style>
 
-</ResourceDictionary>
+</ResourceDictionary>