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List view Repeat Button Hight and width customization

I am trying to apply style for scroll bars of listview control in WPF.
I want to change height and width of the repeat button.
How can I configure this.
I am newbie in WPF can any one help me out in this topic.
Thanks in Advance.

You'll need to modify the default ScrollBar control template. Copy-paste the default style from here, and modify the "HorizontalIncrementTemplate" and "VerticalIncrementTemplate" XAML as needed (in particular for your case, look at modifying the height/width of the Path elements).
Alternatively, you can also use Blend to modify control templates, which you may find easier.

Try this
<ListView>
<ListView.Style>
<Style TargetType="ListView">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListView">
<ScrollViewer>
<ScrollViewer.Style>
<Style TargetType="ScrollViewer">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ScrollViewer">
<!--Grid used for displaying listview item(ScrollContentPresenter Grid.ColumnSpan="2") and vertical scrollviwer(Grid Column="1")-->
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<!--Listview item will display in ScrollContentPresenter-->
<ScrollContentPresenter Grid.ColumnSpan="2"/>
<!--Vertical Scrollviwer style-->
<ScrollBar Name="PART_VerticalScrollBar" Grid.Column="1" HorizontalAlignment="Right" Grid.RowSpan="2" Value="{TemplateBinding VerticalOffset}" Maximum="{TemplateBinding ScrollableHeight}" ViewportSize="{TemplateBinding ViewportHeight}" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}">
<ScrollBar.Style>
<Style TargetType="ScrollBar">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ScrollBar">
<!--you can change height and width of below repeat button -->
<Grid Background="Green">
<Grid.RowDefinitions>
<RowDefinition MaxHeight="18"/>
<RowDefinition Height="0.00001*"/>
<RowDefinition MaxHeight="18"/>
</Grid.RowDefinitions>
<Border Grid.RowSpan="3" CornerRadius="2" Background="#F0F0F0" />
<RepeatButton Grid.Row="0" Height="0" Command="ScrollBar.LineUpCommand" Content="M 0 4 L 8 4 L 4 0 Z" />
<Track Name="PART_Track" Grid.RowSpan="3" IsDirectionReversed="true">
<Track.DecreaseRepeatButton>
<RepeatButton Height="0" Command="ScrollBar.PageUpCommand" />
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb Background="LightGray" Margin="2" />
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Height="0" Command="ScrollBar.PageDownCommand" />
</Track.IncreaseRepeatButton>
</Track>
<RepeatButton Grid.Row="3" Height="0" Command="ScrollBar.LineDownCommand" Content="M 0 0 L 4 4 L 8 0 Z"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ScrollBar.Style>
</ScrollBar>
<!--similarly you can customize for horizontal scrollviwer-->
<ScrollBar Name="PART_HorizontalScrollBar" Orientation="Horizontal" Grid.Row="1" Grid.Column="1" Value="{TemplateBinding HorizontalOffset}" Maximum="{TemplateBinding ScrollableWidth}" ViewportSize="{TemplateBinding ViewportWidth}" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ScrollViewer.Style>
<ItemsPresenter></ItemsPresenter>
</ScrollViewer>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListView.Style>
</ListView>
For more details visit

Windows Phone 8, remove the Header of each PivotItem

I struggled with this problem for hours. I want to use the control Pivot as a Pager in Windows Phone, so I want to remove the Header of each PivotItem. What I have done is to create a DataTemplage for the Pivot's HeaderTemplate, as below:
<DataTemplate x:Name="DataTemplateScrollTestItemHeader"
x:Key="DataTemplateScrollTestItemHeader">
<TextBlock
Height="0"
Width="0"
Margin="0,0,0,0"
Padding="0,0,0,0"
Text=""/>
</DataTemplate>
In code, I set the HeaderTemplate to this DataTemplate:
PivotTestType.HeaderTemplate = DataTemplateScrollTestItemHeader;
What happened is the header text is disappeared, but the header still occupied some space. I have read this：
Windows Phone 8: remove pivot header
But it's the same with my method. It can't remove the space of the Header.
Anyone know how to handle this?

I think the best would be to underdstand how the pivot is constructed (with this you will be able to do whatever you want with your pivot), I wrote a small example which may help you:
<phone:Pivot Name="myPivot" VerticalAlignment="Stretch" Title="myPivot">
<phone:Pivot.Template>
<ControlTemplate TargetType="phone:Pivot">
<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<ContentPresenter ContentTemplate="{TemplateBinding TitleTemplate}"
Content="{TemplateBinding Title}" Margin="10,0,0,0"/>
<primitives:PivotHeadersControl x:Name="HeadersListElement" Grid.Row="1" Margin="0,5,0,5"/>
<ItemsPresenter x:Name="PivotItemPresenter" Margin="{TemplateBinding Padding}" Grid.Row="2"/>
</Grid>
</ControlTemplate>
</phone:Pivot.Template>
<phone:Pivot.HeaderTemplate>
<DataTemplate>
<Grid Height="30">
<TextBlock Text="{Binding}" FontSize="{StaticResource PhoneFontSizeMediumLarge}" Margin="0,0,10,0"/>
</Grid>
</DataTemplate>
</phone:Pivot.HeaderTemplate>
<phone:PivotItem Margin="0">
</phone:PivotItem>
</phone:Pivot>
With the code above you can change height, background color etc. of pivot title, header itempresenter and so on.
And don't forget to add xmlns-primitives at the beginning of xaml:
xmlns:primitives="clr-namespace:Microsoft.Phone.Controls.Primitives;assembly=Microsoft.Phone"
You can also find more on this site or MSDN: this, MSDN.

Remove all Headers from PivotItems and build (F6) the application.
<phone:Pivot Title="MY APPLICATION">
<phone:PivotItem>
// Some code
</phone:PivotItem>
<phone:PivotItem>
// Some code
</phone:PivotItem>
</phone:Pivot>

Hy, Here is my solution to remove the header and title :
<phone:PhoneApplicationPage.Resources>
<Style x:Key="PivotWithoutHeaderTitleStyle" TargetType="phone:Pivot">
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="VerticalAlignment" Value="Stretch"/>
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Foreground" Value="Transparent"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<Grid/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="phone:Pivot">
<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<ContentControl ContentTemplate="{TemplateBinding TitleTemplate}" Content="{TemplateBinding Title}" HorizontalAlignment="Left" Margin="0" Height="0"/>
<Primitives:PivotHeadersControl x:Name="HeadersListElement" Margin="0" Height="0"/>
<ItemsPresenter x:Name="PivotItemPresenter" Margin="{TemplateBinding Padding}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ImagePivotItemStyle" TargetType="phone:PivotItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="phone:PivotItem">
<Grid Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="Pivot">
<VisualState x:Name="Right"/>
<VisualState x:Name="Left"/>
<VisualState x:Name="Center"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources> <phone:Pivot Name="ImagesPivot" Margin="0,0,0,0" Style="{StaticResource PivotWithoutHeaderTitleStyle}" ItemContainerStyle="{StaticResource ImagePivotItemStyle}">
<phone:Pivot.TitleTemplate>
<DataTemplate/>
</phone:Pivot.TitleTemplate>
<phone:Pivot.HeaderTemplate>
<DataTemplate/>
</phone:Pivot.HeaderTemplate>
<phone:Pivot.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image Source="{Binding}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
</Grid>
</DataTemplate>
</phone:Pivot.ItemTemplate>
</phone:Pivot>
Hope that will help

How to Change Pivot Header Template in Windows Phone 8

I would like to be able to change the background of the Pivot Headers and Application Title in Windows Phone 8. From what I gather, I must create a custom style targeting the Pivot control. I am not sure, however, to change the background of only the headers?
I would like to adjust the style somehow
<Style x:Key="MyPivotStyle" TargetType="phone:Pivot">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="phone:Pivot">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid CacheMode="BitmapCache" Grid.RowSpan="2">
<Grid.Background>
<ImageBrush ImageSource="/Assets/bg_header.png"/>
</Grid.Background>
</Grid>
<Grid Background="{TemplateBinding Background}" CacheMode="BitmapCache" Grid.Row="2" />
<ContentPresenter ContentTemplate="{TemplateBinding TitleTemplate}" Margin="24,17,0,-7">
<StackPanel Orientation="Horizontal">
<Image Source="/Assets/company_name.png" Width="213.75" HorizontalAlignment="Left" VerticalAlignment="Top" />
<Button HorizontalAlignment="Right" VerticalAlignment="Top" Margin="140,-20,0,35" BorderThickness="0" x:Name="btnHome">
<Image Source="/Assets/btnHome.png" Width="48" Height="48" ></Image>
</Button>
</StackPanel>
</ContentPresenter>
<controlsPrimitives:PivotHeadersControl x:Name="HeadersListElement" Foreground="White" Grid.Row="1"/>
<ItemsPresenter x:Name="PivotItemPresenter" Margin="{TemplateBinding Padding}" Grid.Row="2"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>

EDITED for WinRT (sorry for the delay and thanks for the reminder to update this answer):
To edit a full template right click on the control when in Document Outline and select Edit Template - Current (in Visual Studio or Blend) and the template will be generated for you and you can edit as you want, see my answer here for screenshots.
Here are the two examples below (posted in 2013) redone for Windows Phone Windows Runtime:
<Grid Background="Transparent">
<Pivot Title="Re-templating example">
<Pivot.HeaderTemplate>
<DataTemplate>
<Grid Background="Blue">
<TextBlock Text="{Binding}" />
</Grid>
</DataTemplate>
</Pivot.HeaderTemplate>
<Pivot.TitleTemplate>
<DataTemplate>
<Grid Background="Green">
<TextBlock Text="{Binding}" />
</Grid>
</DataTemplate>
</Pivot.TitleTemplate>
<PivotItem Header="One">
<TextBlock FontSize="35"
Text="This is item one" />
</PivotItem>
<PivotItem Header="Two">
<TextBlock FontSize="35"
Text="This is item 2" />
</PivotItem>
</Pivot>
</Grid>
And second example, notice that we are wrapping the ContentPresenter in a Grid (you could use a border as well or any other element):
<Page.Resources>
<SolidColorBrush x:Key="PivotBackground" Color="#FFE46C08"/>
<Style x:Key="PivotStyle" TargetType="Pivot">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Pivot">
<Grid x:Name="RootElement" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--Notice that ContentControl is wrapped in a Grid and Background set to resource furtehr up-->
<Grid VerticalAlignment="Center" Background="{StaticResource PivotBackground}">
<ContentControl x:Name="TitleContentControl" ContentTemplate="{TemplateBinding TitleTemplate}" Content="{TemplateBinding Title}" Style="{StaticResource PivotTitleContentControlStyle}"/>
</Grid>
<ScrollViewer x:Name="ScrollViewer" HorizontalSnapPointsAlignment="Center" HorizontalSnapPointsType="MandatorySingle" HorizontalScrollBarVisibility="Hidden" Margin="{TemplateBinding Padding}" Grid.Row="1" Template="{StaticResource ScrollViewerScrollBarlessTemplate}" VerticalSnapPointsType="None" VerticalScrollBarVisibility="Disabled" VerticalScrollMode="Disabled" VerticalContentAlignment="Stretch" ZoomMode="Disabled">
<PivotPanel x:Name="Panel" VerticalAlignment="Stretch">
<!--Background set to resource further up-->
<PivotHeaderPanel Background="{StaticResource PivotBackground}" x:Name="Header" >
<PivotHeaderPanel.RenderTransform>
<CompositeTransform x:Name="HeaderTranslateTransform" TranslateX="0"/>
</PivotHeaderPanel.RenderTransform>
</PivotHeaderPanel>
<ItemsPresenter x:Name="PivotItemPresenter">
<ItemsPresenter.RenderTransform>
<TranslateTransform x:Name="ItemsPresenterTranslateTransform" X="0"/>
</ItemsPresenter.RenderTransform>
</ItemsPresenter>
</PivotPanel>
</ScrollViewer>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
Using the above style:
<Grid Background="Transparent">
<Pivot Style="{StaticResource PivotStyle}"
Title="Re-templating example">
<PivotItem Header="One">
<TextBlock FontSize="35" Text="This is item one" />
</PivotItem>
<PivotItem Header="Two">
<TextBlock FontSize="35" Text="This is item 2"/>
</PivotItem>
</Pivot>
</Grid>
By the way, it's usually preferred to keep styles in a separate style file- I've only kept them on the same page for simplicity for this example. If you remove the x:key attribute the style will be applied to all the controls of the set target type (Pivot in this example).
Answer from 2013 for Windows Phone 7.X and Windows Phone 8 (WP Silverlight:
There are a few ways you can do it, but here is one example:
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<phone:Pivot Grid.Row="1">
<phone:Pivot.HeaderTemplate>
<DataTemplate>
<Grid Background="Red" Height="200">
<TextBlock Text="{Binding}"/>
</Grid>
</DataTemplate>
</phone:Pivot.HeaderTemplate>
<phone:PivotItem Header="Test">
<TextBlock Text="ghjgb"/>
</phone:PivotItem>
<phone:PivotItem Header="Test">
<TextBlock Text="ghjgb"/>
</phone:PivotItem>
</phone:Pivot>
If you however want to do this:
You can do this, remove the x:key to apply to all pivoits, or use the key to set the style on just selected pivoit elements like so:
<controls:Pivot Title="The Marathon Runner" Style="{StaticResource PivotStyle}">
<Style x:Key="PivotStyle" TargetType="phone:Pivot">
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<Grid/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="phone:Pivot">
<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid Background="#ff9000" CacheMode="BitmapCache" Grid.RowSpan="2" />
<Grid Background="{TemplateBinding Background}" CacheMode="BitmapCache"
Grid.Row="2" />
<ContentPresenter ContentTemplate="{TemplateBinding TitleTemplate}"
Content="{TemplateBinding Title}" Margin="24,17,0,-7"/>
<Primitives:PivotHeadersControl x:Name="HeadersListElement"
Grid.Row="1"/>
<ItemsPresenter x:Name="PivotItemPresenter"
Margin="{TemplateBinding Padding}" Grid.Row="2"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
Dont forget to use:
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:Primitives="clr-namespace:Microsoft.Phone.Controls.Primitives;assembly=Microsoft.Phone"

Custom ScrollBar Thumb can't be dragged in DataGrid (but RepeatButtons work OK)?

I've tried customizing the look and feel of the ScrollBar of a DataGrid in WPF, simply by applying new style on the ScrollBar. This style changes the Template of the ScrollBar to a new one. Almost works fine except that I can't hold mouse down on the Thumb and drag to scroll, I just can click on the RepeatButtons (both Line buttons and Page buttons work OK) to scroll.
I'm still new to WPF, I don't know what the problem might be here. Here is the code:
<DataGrid HorizontalAlignment="Left" VerticalAlignment="Top" ItemsSource="{Binding}" SnapsToDevicePixels="True">
<DataGrid.Resources>
<Style TargetType="ScrollBar">
<Style.Resources>
<ControlTemplate x:Key="verRepeat" TargetType="RepeatButton">
<Border CornerRadius="4" BorderBrush="Green" BorderThickness="1" Background="Yellow">
<ContentPresenter Width="18" Height="18"/>
</Border>
</ControlTemplate>
<ControlTemplate x:Key="midRepeat" TargetType="RepeatButton">
<Border Background="Transparent">
<ContentPresenter/>
</Border>
</ControlTemplate>
<ControlTemplate x:Key="verScroll" TargetType="ScrollBar">
<Grid>
<Grid.RowDefinitions>
<RowDefinition MaxHeight="18"/>
<RowDefinition/>
<RowDefinition MaxHeight="18"/>
</Grid.RowDefinitions>
<Border Grid.RowSpan="3"/>
<RepeatButton Grid.Row="0" Width="18" Command="ScrollBar.LineUpCommand" Template="{StaticResource verRepeat}">
</RepeatButton>
<Track Grid.Row="1" IsDirectionReversed="True">
<Track.DecreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageUpCommand" Template="{StaticResource midRepeat}">
</RepeatButton>
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb Margin="2,0,2,0">
<Thumb.Template>
<ControlTemplate TargetType="Thumb">
<Border Background="Green"/>
</ControlTemplate>
</Thumb.Template>
</Thumb>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageDownCommand" Template="{StaticResource midRepeat}">
</RepeatButton>
</Track.IncreaseRepeatButton>
</Track>
<RepeatButton Grid.Row="2" Command="ScrollBar.LineDownCommand" Template="{StaticResource verRepeat}">
</RepeatButton>
</Grid>
</ControlTemplate>
<ControlTemplate x:Key="horScroll" TargetType="ScrollBar">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MaxWidth="18"/>
<ColumnDefinition Width="0.00001*"/>
<ColumnDefinition MaxWidth="18"/>
</Grid.ColumnDefinitions>
<Border Grid.ColumnSpan="3"/>
<RepeatButton Grid.Column="0" Height="18" Command="ScrollBar.LineLeftCommand" Template="{StaticResource verRepeat}">
</RepeatButton>
<Track Grid.Column="1" IsDirectionReversed="False" Focusable="False">
<Track.DecreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageLeftCommand" Template="{StaticResource midRepeat}">
</RepeatButton>
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb>
<Thumb.Template>
<ControlTemplate TargetType="Thumb">
<Grid>
<Border Background="Green" Margin="0,1,0,1"/>
<ContentPresenter Width="18" Height="18"/>
</Grid>
</ControlTemplate>
</Thumb.Template>
</Thumb>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Command="ScrollBar.PageRightCommand" Template="{StaticResource midRepeat}">
</RepeatButton>
</Track.IncreaseRepeatButton>
</Track>
<RepeatButton Grid.Column="2" Command="ScrollBar.LineRightCommand" Template="{StaticResource verRepeat}">
</RepeatButton>
</Grid>
</ControlTemplate>
</Style.Resources>
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Style.Triggers>
<Trigger Property="Orientation" Value="Horizontal">
<Setter Property="Template" Value="{StaticResource horScroll}"/>
</Trigger>
<Trigger Property="Orientation" Value="Vertical">
<Setter Property="Template" Value="{StaticResource verScroll}"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.Resources>
</DataGrid>
I think I miss something here, the Thumb seems to be unable to interact with.
Here is the screenshot of the grid:

All is fine, just to Track to add the name of PART_Track as follows:
<Track x:Name="PART_Track" Grid.Row="1" IsDirectionReversed="True" ... />
Without this Thumb does not work.
Note: When designing your template and style better look at the original, at least in order to know the names of the pattern.
Here is a little description about the importance parts of the Template.

Black background of WPF Window

I created simple window and applied style to it. Now, when I run application background is black:
In XAML it looks normal:
What is causing this?
Here is XAML code:
<Window SizeToContent="WidthAndHeight"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="WPFTest.MainWindow">
<Window.Style>
<Style TargetType="Window">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="Window">
<Grid Name="LayoutRoot" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<ContentPresenter />
</Grid>
<StatusBar Name="statusBar1" Height="23" HorizontalAlignment="Stretch" VerticalAlignment="Top" Grid.Row="1" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Style>
<Grid>
<Grid Height="114" HorizontalAlignment="Center" Margin="1,0,557,622" Name="grid" VerticalAlignment="Bottom" Width="466">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="100*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="25*" />
<RowDefinition Height="25*" />
<RowDefinition Height="25*" />
<RowDefinition Height="25*" />
</Grid.RowDefinitions>
<Label Content="Label4" Grid.Column="0" Grid.Row="3" HorizontalAlignment="Left" Margin="3,0,3,0" MinHeight="16" MinWidth="97" Name="xResourceLabel4" VerticalAlignment="Bottom" />
<Label Content="Label1" Grid.Column="0" Grid.Row="0" HorizontalAlignment="Left" Margin="3,0,3,0" MinHeight="16" MinWidth="98" Name="xResourceLabel1" VerticalAlignment="Bottom" />
<Label Content="Label2" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Left" Margin="3,0,3,0" MinHeight="16" MinWidth="114" Name="xResourceLabel2" VerticalAlignment="Bottom" />
<Label Content="Label3" Grid.Column="0" Grid.Row="2" HorizontalAlignment="Left" Margin="3,0,3,0" MinHeight="16" MinWidth="80" Name="xResourceLabel3" VerticalAlignment="Bottom" />
<TextBox Background="#FFFFFF99" Grid.ColumnSpan="2" HorizontalAlignment="Center" Margin="120,0,189,0" MinHeight="23" MinWidth="157" Name="tbREGNR" VerticalAlignment="Bottom" />
<TextBox Background="#FFFFFF99" Grid.Column="1" Grid.Row="1" HorizontalAlignment="Center" Margin="0,0,189,0" MinHeight="23" MinWidth="157" Name="tbFaFabnr" VerticalAlignment="Bottom" />
<ComboBox Background="#FFFFFF99" DisplayMemberPath="" Grid.Column="1" Grid.Row="2" HorizontalAlignment="Center" Margin="0,0,189,0" MinHeight="24" MinWidth="157" Name="cb" SelectedValuePath="" VerticalAlignment="Bottom" />
<TextBox Background="#FFFF99CC" Grid.Column="1" Grid.Row="3" HorizontalAlignment="Center" Margin="0,0,175,0" MinHeight="23" MinWidth="171" Name="tbComp" VerticalAlignment="Bottom" />
</Grid>
</Grid>
</Window>

<Grid Name="LayoutRoot" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="White">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<ContentPresenter />
</Grid>
<StatusBar Name="statusBar1" Height="23" HorizontalAlignment="Stretch" VerticalAlignment="Top" Grid.Row="1" />
</Grid>
Because you are overriding the default template for the Window you are taking away the style effects (of which one is background = black on the root grid)
see above, i've put it in the template and it should now work (Background="White")
Below is the default template for a window (Taken From Blend)
<ControlTemplate x:Key="WindowTemplateKey" TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid>
<AdornerDecorator>
<ContentPresenter/>
</AdornerDecorator>
<ResizeGrip x:Name="WindowResizeGrip" HorizontalAlignment="Right" IsTabStop="false" Visibility="Collapsed" VerticalAlignment="Bottom"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ResizeMode" Value="CanResizeWithGrip"/>
<Condition Property="WindowState" Value="Normal"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="WindowResizeGrip" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="WindowStyle1" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<AdornerDecorator>
<ContentPresenter/>
</AdornerDecorator>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="ResizeMode" Value="CanResizeWithGrip">
<Setter Property="Template" Value="{StaticResource WindowTemplateKey}"/>
</Trigger>
</Style.Triggers>
</Style>

Based on TBohnen.jnr's answer, the actual correct answer would be do it as the default window template and add Background="{TemplateBinding Background}" to the top-level child element of the ControlTemplate. In the default template it is a Border, whereas in your case it's the Grid:
<Grid Background="{TemplateBinding Background}" Name="LayoutRoot" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">