Expander with animation that support all direction - c#

My Objective: is to create a Custom Expander with Animation on expanding and should support for all the directions.
What I tried: I have Implemented a solution with the help of this. I modified it and made it work based on my need. My solution will work with Up and I can able to make it work even with Down Direction.
Whats my problem now: I couldn't make it work with all Directions. I tried and failed to make it work on setting ExpanderDirection to Left and Right.
Here is my solution:
Template for Expander:
<ControlTemplate x:Key="AnimatedExpanderButtonTemp" TargetType="{x:Type ToggleButton}">
<Border x:Name="ExpanderButtonBorder"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}"
>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Rectangle Fill="Transparent"
Grid.ColumnSpan="2"/>
<Ellipse Name="Circle"
Grid.Column="0"
Stroke="DarkGray"
Width="20"
Height="20"
HorizontalAlignment="Center"
VerticalAlignment="Center"
/>
<Path x:Name="Arrow"
Grid.Column="0"
Data="M 1,1.5 L 4.5,5 8,1.5"
Stroke="#FF666666"
StrokeThickness="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RenderTransformOrigin="0.5,0.5"
>
<Path.RenderTransform>
<RotateTransform Angle="0"/>
</Path.RenderTransform>
</Path>
<ContentPresenter x:Name="HeaderContent"
Grid.Column="1"
Margin="4,0,0,0"
ContentSource="Content"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<!-- Animate arrow when toggled-->
<Trigger Property="IsChecked"
Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Arrow"
Storyboard.TargetProperty="(Path.RenderTransform).(RotateTransform.Angle)"
To="180"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Arrow"
Storyboard.TargetProperty="(Path.RenderTransform).(RotateTransform.Angle)"
To="0"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
<!-- MouseOver, Pressed behaviours-->
<Trigger Property="IsMouseOver"
Value="true">
<Setter Property="Stroke"
Value="#FF3C7FB1"
TargetName="Circle"/>
<Setter Property="Stroke"
Value="#222"
TargetName="Arrow"/>
</Trigger>
<Trigger Property="IsPressed"
Value="true">
<Setter Property="Stroke"
Value="#FF526C7B"
TargetName="Circle"/>
<Setter Property="StrokeThickness"
Value="1.5"
TargetName="Circle"/>
<Setter Property="Stroke"
Value="#FF003366"
TargetName="Arrow"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<!-- Slide Out Content Expander's Template,
Uses: AnimatedExpanderButtonTemp from above,
MultiplyConverter in codebehind-->
<local:MultiplyConverter x:Key="multiplyConverter" />
<ControlTemplate x:Key="RevealExpanderTemp" TargetType="{x:Type Expander}">
<DockPanel>
<Border Background="{Binding Path=Background, RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" DockPanel.Dock="Bottom" Padding="5,3">
<ToggleButton x:Name="ExpanderButton" HorizontalAlignment="Center" HorizontalContentAlignment="Center"
Template="{StaticResource AnimatedExpanderButtonTemp}"
Content="{TemplateBinding Header}"
IsChecked="{Binding Path=IsExpanded, RelativeSource={RelativeSource TemplatedParent}}"
OverridesDefaultStyle="True"
Padding="1.5,0">
</ToggleButton>
</Border>
<ScrollViewer x:Name="ExpanderContentScrollView" DockPanel.Dock="Top"
HorizontalScrollBarVisibility="Hidden"
VerticalScrollBarVisibility="Hidden"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Bottom"
>
<ScrollViewer.Tag>
<sys:Double>0.0</sys:Double>
</ScrollViewer.Tag>
<ScrollViewer.Height>
<MultiBinding Converter="{StaticResource multiplyConverter}">
<Binding Path="ActualHeight" ElementName="ExpanderContent"/>
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</ScrollViewer.Height>
<ContentPresenter x:Name="ExpanderContent" ContentSource="Content"/>
</ScrollViewer>
</DockPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ExpanderContentScrollView"
Storyboard.TargetProperty="Tag"
To="1"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ExpanderContentScrollView"
Storyboard.TargetProperty="Tag"
To="0"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
MultiplyConverter.cs (required for Template)
public class MultiplyConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
double result = 1.0;
for (int i = 0; i < values.Length; i++)
{
if (values[i] is double)
result *= (double)values[i];
}
return result;
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
throw new Exception("Not implemented");
}
}
Use it like this:
<Grid >
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="Orange">
<Expander Template="{StaticResource RevealExpanderTemp}"
OverridesDefaultStyle="True"
HorizontalAlignment="Left"
VerticalAlignment="Top" Background="LightGray">
<StackPanel>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
</StackPanel>
</Expander>
</Grid>
<Grid Grid.Row="2" Background="Chocolate" />
</Grid>
Above solution will not work with ExpandDirection="Left" or "Right"
Any suggestions on how could I make it work with all Directions or any other alternatives for this?


After 8 hours of struggle, I found the workaround for my question. Let me answer my own question so that It may save some time for other peoples looking for solution.
Control Template for Expander:
<ControlTemplate x:Key="AnimatedExpanderButtonTemp" TargetType="{x:Type ToggleButton}">
<Border x:Name="ExpanderArrow" CornerRadius="5"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}"
>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Rectangle Fill="Transparent"
Grid.ColumnSpan="2"/>
<Ellipse Name="Circle"
Grid.Column="0"
Stroke="DarkGray"
Width="20"
Height="20"
HorizontalAlignment="Center"
VerticalAlignment="Center"
/>
<Path x:Name="Arrow"
Grid.Column="0"
Data="M 0 0 L 3,6 L 6,0"
Stroke="#FF666666"
StrokeThickness="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RenderTransformOrigin="0.5,0.5"
>
<Path.RenderTransform>
<RotateTransform Angle="0"/>
</Path.RenderTransform>
</Path>
<ContentPresenter x:Name="HeaderContent"
Margin="4,0,0,0"
ContentSource="Content"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="DockPanel.Dock"
Value="Right">
<Setter Property="Data" TargetName="Arrow" Value="M 0 0 L 3 3 L 0 6 "/>
</Trigger>
<Trigger Property="DockPanel.Dock"
Value="Left">
<Setter Property="Data" TargetName="Arrow" Value="M 0 0 L 3 3 L 0 6"/>
</Trigger>
<Trigger Property="DockPanel.Dock"
Value="Top">
<Setter Property="Data" TargetName="Arrow" Value="M 0 0 L 3,6 L 6,0"/>
</Trigger>
<!-- Animate arrow when toggled-->
<Trigger Property="IsChecked"
Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Arrow"
Storyboard.TargetProperty="(Path.RenderTransform).(RotateTransform.Angle)"
To="180"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Arrow"
Storyboard.TargetProperty="(Path.RenderTransform).(RotateTransform.Angle)"
To="0"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
<!-- MouseOver, Pressed behaviours-->
<Trigger Property="IsMouseOver"
Value="true">
<Setter Property="Stroke"
Value="#FF3C7FB1"
TargetName="Circle"/>
<Setter Property="Stroke"
Value="#222"
TargetName="Arrow"/>
</Trigger>
<Trigger Property="IsPressed"
Value="true">
<Setter Property="Stroke"
Value="#FF526C7B"
TargetName="Circle"/>
<Setter Property="StrokeThickness"
Value="1.5"
TargetName="Circle"/>
<Setter Property="Stroke"
Value="#FF003366"
TargetName="Arrow"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<!-- Slide Out Content Expander's Template,
Uses: AnimatedExpanderButtonTemp from above,
MultiplyConverter in codebehind-->
<local:MultiplyConverter x:Key="multiplyConverter" />
<ControlTemplate x:Key="RevealExpanderTemp" TargetType="{x:Type Expander}">
<DockPanel>
<!--<Border x:Name="ExpanderButtonBorder" Background="{Binding Path=Background, RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="Stretch" DockPanel.Dock="Bottom" Padding="5,3">-->
<ToggleButton x:Name="ExpanderButton" HorizontalAlignment="Stretch" DockPanel.Dock="Bottom"
Template="{StaticResource AnimatedExpanderButtonTemp}"
Content="{TemplateBinding Header}"
IsChecked="{Binding Path=IsExpanded, RelativeSource={RelativeSource TemplatedParent}}"
Background="{Binding Path=Background, RelativeSource={RelativeSource TemplatedParent}}"
OverridesDefaultStyle="True"
Padding="0">
</ToggleButton>
<!--</Border>-->
<ScrollViewer x:Name="ExpanderContentScrollView" DockPanel.Dock="Top"
HorizontalScrollBarVisibility="Hidden"
VerticalScrollBarVisibility="Hidden"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Bottom"
>
<ScrollViewer.Tag>
<sys:Double>0.0</sys:Double>
</ScrollViewer.Tag>
<ContentPresenter x:Name="ExpanderContent" ContentSource="Content"/>
</ScrollViewer>
</DockPanel>
<ControlTemplate.Triggers>
<Trigger Property="ExpandDirection" Value="Right">
<Setter Property="DockPanel.Dock" TargetName="ExpanderButton" Value="Right"/>
<Setter Property="DockPanel.Dock" TargetName="ExpanderContentScrollView" Value="Left"/>
<Setter Property="Width" TargetName="ExpanderContentScrollView">
<Setter.Value>
<MultiBinding Converter="{StaticResource multiplyConverter}">
<Binding Path="ActualWidth" ElementName="ExpanderContent"/>
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ExpandDirection" Value="Up">
<Setter Property="DockPanel.Dock" TargetName="ExpanderButton" Value="Top"/>
<Setter Property="DockPanel.Dock" TargetName="ExpanderContentScrollView" Value="Bottom"/>
<Setter Property="Height" TargetName="ExpanderContentScrollView">
<Setter.Value>
<MultiBinding Converter="{StaticResource multiplyConverter}">
<Binding Path="ActualHeight" ElementName="ExpanderContent"/>
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ExpandDirection" Value="Left">
<Setter Property="DockPanel.Dock" TargetName="ExpanderButton" Value="Left"/>
<Setter Property="DockPanel.Dock" TargetName="ExpanderContentScrollView" Value="Right"/>
<Setter Property="Width" TargetName="ExpanderContentScrollView">
<Setter.Value>
<MultiBinding Converter="{StaticResource multiplyConverter}">
<Binding Path="ActualWidth" ElementName="ExpanderContent"/>
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ExpandDirection" Value="Down">
<Setter Property="Height" TargetName="ExpanderContentScrollView">
<Setter.Value>
<MultiBinding Converter="{StaticResource multiplyConverter}">
<Binding Path="ActualHeight" ElementName="ExpanderContent"/>
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
<Trigger Property="IsExpanded" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ExpanderContentScrollView"
Storyboard.TargetProperty="Tag"
To="1"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ExpanderContentScrollView"
Storyboard.TargetProperty="Tag"
To="0"
Duration="0:0:0.4"/>
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
MultiplyConverter.cs (required for Template)
public class MultiplyConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
double result = 1.0;
for (int i = 0; i < values.Length; i++)
{
if (values[i] is double)
result *= (double)values[i];
}
return result;
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
throw new Exception("Not implemented");
}
}
Demo:
<!-- Small demo of Expander Template above-->
<Grid >
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="Orange">
<Expander Template="{StaticResource RevealExpanderTemp}" ExpandDirection="Right"
OverridesDefaultStyle="True"
HorizontalAlignment="Left"
VerticalAlignment="Top" Background="LightGray">
<StackPanel>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
<TextBlock Text="This is Sample Text for Expander" Margin="5"/>
</StackPanel>
</Expander>
</Grid>
<Grid Grid.Row="2" Background="Chocolate" />
</Grid>
The code was not tested fully and there may be bugs.

Related

Listview Surpressing Controlttemplate Routed Events / Animation

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One feature of it is that the icon "wobbles" a bit when you hover over it. This is achieved using the eventtriger and a margin.
It works as expected if I use the radiobutton by itself:
now i used the control inside of a listview and for some reasons my mouseover events and animations dont fire anymore.
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<Setter.Value>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</Setter.Value>
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</Style>
</ListView.Style>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
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<ControlTemplate TargetType="ListViewItem">
<Grid>
<ctrl:RadioButtonWithIcon ViewMode="{Binding ViewMode}" Content="{Binding Name}" IsEnabled="False" IsChecked="{TemplateBinding IsSelected}"/>
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How can i get my animations to work in the listview as well?

How can I Give the togglebutton a default text?

I have a togglebutton with this style shown below, the toggle button work perfectly but I would like to set a default text to the togglebutton when I open the MainWindow , it should be shown that in the state of false, not disabled
The togglebutton will show the text value only when I do action on it ( Set to ON or OFF ) it will display the text but by default, it seems to the user that it was disabled ( see the picture ).
After starting the application :
Set ON :
Set OFF:
The problem is when I run the application before click on the Toggle button , the shown in the screen is a Tooglebutton was disabled , I need to inizialize this control to state "OFF" ,
Is it possible?
How can I do that?
App.xaml
<Style x:Key="myToggleSwitch" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Grid x:Name="toggleSwitch">
<Border x:Name="Border" CornerRadius="10"
Background="#FFFFFFFF"
Width="80" Height="25">
<Border.Effect>
<DropShadowEffect ShadowDepth="0.5" Direction="0" Opacity="0.3" />
</Border.Effect>
<Ellipse x:Name="Ellipse" Fill="#FFFFFFFF" Stretch="Uniform"
Margin="2 2 2 1"
Stroke="Gray" StrokeThickness="0.2"
HorizontalAlignment="Left" Width="22" >
<Ellipse.Effect>
<DropShadowEffect BlurRadius="10" ShadowDepth="1" Opacity="0.3" Direction="260" />
</Ellipse.Effect>
</Ellipse>
</Border>
<TextBlock x:Name="txtOff" Text="OFF" Margin="0 0 40 0" VerticalAlignment="Center" FontWeight="DemiBold" HorizontalAlignment="Right" Foreground="White" FontSize="12" />
<TextBlock x:Name="txtOn" Text="ON" Margin="40 0 0 0" VerticalAlignment="Center" FontWeight="DemiBold" Foreground="White" HorizontalAlignment="Left" FontSize="12" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True" >
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#34A543"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="56 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0.0" To="1.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<!-- some out fading -->
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#C2283B"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="2 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0" To="1.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
<Setter Property="Foreground" Value="{DynamicResource IdealForegroundColorBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="False">
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource GrayBrush7}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="VerticalContentAlignment" Value="Center" />
</Style>
MainWindow.xaml.cs
<Grid>
<ToggleButton x:Name="tog" Style="{StaticResource myToggleSwitch}" Width="150" Checked="tog_Checked" Unchecked="tog_Unchecked" ></ToggleButton>
</Grid>
Update :
<Style x:Key="myToggleSwitch" TargetType="{x:Type ToggleButton}">
<Setter Property="IsChecked" Value="False"/> <!-- What I have added -->
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Grid x:Name="toggleSwitch">
<Border x:Name="Border" CornerRadius="10"
Background="#FFFFFFFF"
Width="80" Height="25">
<Border.Effect>
<DropShadowEffect ShadowDepth="0.5" Direction="0" Opacity="0.3" />
</Border.Effect>
<Ellipse x:Name="Ellipse" Fill="#FFFFFFFF" Stretch="Uniform"
Margin="2 2 2 1"
Stroke="Gray" StrokeThickness="0.2"
HorizontalAlignment="Left" Width="22" >
<Ellipse.Effect>
<DropShadowEffect BlurRadius="10" ShadowDepth="1" Opacity="0.3" Direction="260" />
</Ellipse.Effect>
</Ellipse>
</Border>
<TextBlock x:Name="txtOff" Text="OFF" Margin="0 0 40 0" VerticalAlignment="Center" FontWeight="DemiBold" HorizontalAlignment="Right" Foreground="White" FontSize="12" />
<TextBlock x:Name="txtOn" Text="ON" Margin="40 0 0 0" VerticalAlignment="Center" FontWeight="DemiBold" Foreground="White" HorizontalAlignment="Left" FontSize="12" />
</Grid>
Update 2 ( Testing the solution of Jason ).
This what I got :

Since your colors are set by reacting to the IsChecked state change, you just need your initial values to match the false state. Set the border color to the off color (red) rather than white. That should get you what you're looking for.
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Grid x:Name="toggleSwitch">
<Border x:Name="Border" CornerRadius="10"
Background="#C2283B"
Width="80" Height="25">
...
</Setter.Value>
Also set the default opacity of the "On" text to 0 to prevent it from showing.
<TextBlock x:Name="txtOn" Text="ON" Opacity="0" Margin="40 0 0 0" VerticalAlignment="Center" FontWeight="DemiBold" Foreground="White" HorizontalAlignment="Left" FontSize="12" />

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can any one help me how can I reduce the row height with proper alignment.
It is like this:
Code for this grid is:
<Border x:Name="WideMainGrid" Grid.Row="1" Grid.ColumnSpan="8" Background="Black" BorderThickness="1" BorderBrush="Gray" Margin="10,-5,5,0">
<ScrollViewer x:Name="svCartItemsList" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto" Grid.Row="1" Grid.ColumnSpan="8">
<controls:DataGrid x:Name="dgNewBill" RowBackgroundEvenBrush="Black" RowBackgroundOddBrush="Black" ItemsSource="{Binding objStockIssueItemList}" VerticalAlignment="Stretch" Height="470" SelectionMode="Single" TabNavigation="Local" HeaderBackground="Black" Background="Black" BorderThickness="1" BorderBrush="Gray" Grid.Row="2" Grid.ColumnSpan="9" Margin="0,0,0,0">
<controls:DataGrid.Resources>
<Converters:VisibilityConverter x:Key="vc" />
<Converters:NotConverter x:Key="nc" />
<Style x:Key="TransparentListBox" TargetType="ListBox">
<Setter Property="Foreground" Value="{StaticResource ListBoxForegroundThemeBrush}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="{StaticResource ListBoxBorderThemeBrush}"/>
<Setter Property="BorderThickness" Value="{StaticResource ListBoxBorderThemeThickness}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.HorizontalScrollMode" Value="Disabled"/>
<Setter Property="ScrollViewer.IsHorizontalRailEnabled" Value="True"/>
<Setter Property="ScrollViewer.VerticalScrollMode" Value="Enabled"/>
<Setter Property="ScrollViewer.IsVerticalRailEnabled" Value="True"/>
<Setter Property="ScrollViewer.ZoomMode" Value="Disabled"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="TabNavigation" Value="Once"/>
<Setter Property="FontFamily" Value="{StaticResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{StaticResource ControlContentThemeFontSize}"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<VirtualizingStackPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBox">
<Border x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ListBoxDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused"/>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ScrollViewer x:Name="ScrollViewer"
HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}"
IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}"
Padding="{TemplateBinding Padding}" TabNavigation="{TemplateBinding TabNavigation}"
VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
ZoomMode="{TemplateBinding ScrollViewer.ZoomMode}">
<ItemsPresenter/>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DataGridStyle1" TargetType="controls:DataGrid">
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" />
<Setter Property="HeaderBackground" Value="{ThemeResource SystemControlHighlightChromeHighBrush}" />
<Setter Property="RowBackgroundOddBrush" Value="{ThemeResource SystemControlPageBackgroundChromeLowBrush}" />
<Setter Property="CellTemplate">
<Setter.Value>
<DataTemplate>
<ContentPresenter Margin="12" Content="{Binding Control}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="controls:DataGrid">
<Grid Background="{TemplateBinding Background}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Visibility="Collapsed" Background="{TemplateBinding HeaderBackground}" Height="40" x:Name="ColumnHeaders">
<!-- HACK: Needed so that column DPs are working when adding columns in code only. -->
<ContentPresenter>
<controls:DataGridTextColumn />
</ContentPresenter>
</Grid>
<controls:MtListBox BorderThickness="0" Grid.Row="1"
ItemContainerStyle="{TemplateBinding RowStyle}"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch"
Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}"
Style="{StaticResource TransparentListBox}"
Margin="0" x:Name="Rows" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<Grid Background="Transparent">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0"
Margin="12,0,12,2"
VerticalAlignment="Center"
FontSize="{ThemeResource TextStyleLargeFontSize}"
Content="{Binding Header}" />
<StackPanel Grid.Column="1"
Visibility="{Binding IsSelected, Converter={StaticResource vc}}"
VerticalAlignment="Center"
HorizontalAlignment="Left">
<Path Data="M4,0 L0,8 L8,8 Z" Fill="White" Visibility="{Binding IsAscending, Converter={StaticResource vc}}"/>
<Path Data="M0,0 L4,8 L8,0 Z" Fill="White" Visibility="{Binding IsAscending, Converter={StaticResource nc}}"/>
</StackPanel>
</Grid>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</controls:DataGrid.Resources>
<controls:DataGrid.Style>
<StaticResource ResourceKey="DataGridStyle1"/>
</controls:DataGrid.Style>
<controls:DataGrid.RowStyle>
<Style TargetType="ListBoxItem">
<Setter Property="IsTabStop" Value="True"></Setter>
<Setter Property="Padding" Value="0,0,0,0"></Setter>
<Setter Property="Height" Value="35"></Setter>
</Style>
</controls:DataGrid.RowStyle>
<controls:DataGrid.Columns>
<controls:DataGridTextColumn Binding="{Binding SNumber}" Width="0.5*" CanSort="False" Foreground="White">
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="TextAlignment" Value="Center"></Setter>
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<!--<Setter Property="MinHeight" Value="30"></Setter>-->
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<controls:DataGridTemplatedColumn CellTemplate="{StaticResource myCellTemplateMonth}" Width="2.5*" x:Name="ItemDesc" CanSort="False" IsAscendingDefault="True">
<!--<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<Grid>
<Grid.Resources>
<Storyboard x:Key="std" x:Name="std">
<ColorAnimation To="DarkTurquoise" Duration="0:0:1" RepeatBehavior="Forever" AutoReverse="True"
Storyboard.TargetProperty="(Background).(SolidColorBrush.Color)"
Storyboard.TargetName="lastnamePanel" />
</Storyboard>
</Grid.Resources>
<StackPanel x:Name="lastnamePanel" Background="Black">
<i:Interaction.Behaviors>
<Core:DataTriggerBehavior x:Name="desctrgr" Binding="{Binding description}" ComparisonCondition="Equal">
<Media:ControlStoryboardAction x:Name="mediaDesc" Storyboard="{StaticResource std}" />
</Core:DataTriggerBehavior>
</i:Interaction.Behaviors>
<TextBlock x:Name="lastnameTxt" Foreground="White" Text="{Binding description}" TextAlignment="Left" VerticalAlignment="Stretch" Margin="0,0,0,0"></TextBlock>
</StackPanel>
</Grid>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>-->
</controls:DataGridTemplatedColumn>
<controls:DataGridTextColumn Binding="{Binding uom}" Width="0.5*" CanSort="False" Foreground="White">
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="TextAlignment" Value="Center"></Setter>
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="Margin" Value="0,0,0,0"></Setter>
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<controls:DataGridTemplatedColumn Width="0.7*" CanSort="False">
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="pricePanel" Height="30" Tapped="pricePanel_Tapped" >
<TextBlock Name="price" Foreground="White" Text='{Binding editedPrice}' TextAlignment="Center" VerticalAlignment="Center" Margin="0,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTemplatedColumn Width="0.7*" CanSort="False">
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="quantityPanel" Height="30" Tapped="quantityPanel_Tapped">
<TextBlock Name="quantity" TextAlignment="Center" Foreground="White" Text='{Binding quantity}' VerticalAlignment="Center" Margin="0,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTemplatedColumn Width="0.6*" CanSort="False">
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="discountPanel" Height="30" Tapped="discountPanel_Tapped" >
<TextBlock Name="Discount" TextAlignment="Center" Foreground="White" Text='{Binding discount}' VerticalAlignment="Center" Margin="10,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTextColumn Binding="{Binding cartTotal}" Width="0.85*" CanSort="False" Foreground="White">
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="Margin" Value="-40,0,0,0"></Setter>
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<!--delete image column-->
<controls:DataGridTemplatedColumn CanSort="False">
<!--<controls:DataGridTemplatedColumn.Header>
<Image Source="/Images/erase.png" Height="40" Width="40" Grid.Column="7" Margin="5"></Image>
</controls:DataGridTemplatedColumn.Header>-->
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel x:Name="voidImagePanel" Height="30" Tapped="voidImagePanel_Tapped">
<Image x:Name="VoidImage" Source="{Binding imageUrl}" Height="20" Width="30" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="-20,5,0,0"></Image>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
</controls:DataGrid.Columns>
</controls:DataGrid>
</ScrollViewer>
</Border>

You need to remove the margin="12" of ContentPresenter in x:Key="DataGridStyle1" :
Now the it looks like this:
You can slightly modify the margins of your element in DataGridTemplatedColumn.CellTemplate to let the items stay in center of the row:

How to remove the header of MyToolkit Datagrid?

I am using MyToolkit DataGrid in my windows app found here https://github.com/MyToolkit/MyToolkit/wiki/DataGrid. I want to remove the header from the datagrid. How can I do this?
Can Any one tell me...
Thanks In advance.
Here is my code
<controls:DataGrid.RowStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Padding" Value="0"></Setter>
<Setter Property="Height" Value="35"></Setter>
<Setter Property="VerticalAlignment" Value="Top"></Setter>
</Style>
</controls:DataGrid.RowStyle>
<controls:DataGrid.Columns>
<controls:DataGridTextColumn Binding="{Binding SNumber}" Width="0.5*" CanSort="False" Foreground="White">
<!--<controls:DataGridTextColumn.Header>
<Button x:Name="btnSl" x:Uid="RSNO" Style="{StaticResource ButtonStyle1}" Background="DarkTurquoise" Margin="0,0,0,0" ></Button>
</controls:DataGridTextColumn.Header>-->
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="TextAlignment" Value="Center"></Setter>
<Setter Property="VerticalAlignment" Value="Center"></Setter>
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<controls:DataGridTemplatedColumn CellTemplate="{StaticResource myCellTemplateMonth}" Width="2.5*" x:Name="ItemDesc" CanSort="False" IsAscendingDefault="True">
</controls:DataGridTemplatedColumn>
<controls:DataGridTextColumn Binding="{Binding uom}" Width="0.5*" CanSort="False" Foreground="White">
<!--<controls:DataGridTextColumn.Header>
<Button x:Name="btnUOM" x:Uid="uom" Style="{StaticResource ButtonStyle1}" Grid.Column="2" Background="DarkTurquoise"></Button>
</controls:DataGridTextColumn.Header>-->
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="TextAlignment" Value="Center"></Setter>
<Setter Property="Margin" Value="0,0,0,0"></Setter>
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<controls:DataGridTemplatedColumn Width="0.7*" CanSort="False">
<!--<controls:DataGridTextColumn.Header>
<Button x:Name="bPrice" x:Uid="ItemPrice" Style="{StaticResource ButtonStyle1}" Grid.Column="3" Background="DarkTurquoise"></Button>
</controls:DataGridTextColumn.Header>-->
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="pricePanel" Height="30" Tapped="pricePanel_Tapped" >
<TextBlock Name="price" Foreground="White" Text='{Binding editedPrice}' TextAlignment="Center" VerticalAlignment="Center" Margin="0,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTemplatedColumn Width="0.7*" CanSort="False">
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="quantityPanel" Height="30" Tapped="quantityPanel_Tapped">
<TextBlock Name="quantity" TextAlignment="Center" Foreground="White" Text='{Binding quantity}' VerticalAlignment="Center" Margin="0,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTemplatedColumn Width="0.6*" CanSort="False">
<!--<controls:DataGridTextColumn.Header>
<Button x:Name="btnDiscnt" x:Uid="Rdiscount" Style="{StaticResource ButtonStyle1}" Grid.Column="5" Background="DarkTurquoise" ></Button>
</controls:DataGridTextColumn.Header>-->
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel Name="discountPanel" Height="30" Tapped="discountPanel_Tapped" >
<TextBlock Name="Discount" TextAlignment="Center" Foreground="White" Text='{Binding discount}' VerticalAlignment="Center" Margin="10,5,0,0"></TextBlock>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
<controls:DataGridTextColumn Binding="{Binding cartTotal}" Width="0.85*" CanSort="False" Foreground="White">
<!--<controls:DataGridTextColumn.Header>
<Button x:Name="btnCost" x:Uid="ItemCost" Style="{StaticResource ButtonStyle1}" Grid.Column="6" Background="DarkTurquoise"></Button>
</controls:DataGridTextColumn.Header>-->
<controls:DataGridTextColumn.Style>
<Style TargetType="TextBlock">
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
<Setter Property="Margin" Value="-40,0,0,0"></Setter>
</Style>
</controls:DataGridTextColumn.Style>
</controls:DataGridTextColumn>
<!--delete image column-->
<controls:DataGridTemplatedColumn CanSort="False">
<!--<controls:DataGridTemplatedColumn.Header>
<Image Source="/Images/erase.png" Height="40" Width="40" Grid.Column="7" Margin="5"></Image>
</controls:DataGridTemplatedColumn.Header>-->
<controls:DataGridTemplatedColumn.CellTemplate>
<DataTemplate>
<StackPanel x:Name="voidImagePanel" Height="30" Tapped="voidImagePanel_Tapped">
<Image x:Name="VoidImage" Source="/Images/delete.png" Height="20" Width="30" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="-20,5,0,0"></Image>
</StackPanel>
</DataTemplate>
</controls:DataGridTemplatedColumn.CellTemplate>
</controls:DataGridTemplatedColumn>
</controls:DataGrid.Columns>
</controls:DataGrid>
</ScrollViewer>
here I dont want the header. but I am getting empty space. how can I remove that.

here I don't want the header. but I am getting empty space. how can I remove that.
I have checked the source code of MyToolkit, the only way is to modify the default template for DataGrid and set the ColumnHeaders element's Visibility property to Collapsed:
Firstly, adding these two xaml prefixes:
xmlns:controls="using:MyToolkit.Controls"
xmlns:Converters="using:MyToolkit.Converters"
Secondly, appending the following style and assign to DataGrid:
<controls:DataGrid.Resources>
<Converters:VisibilityConverter x:Key="vc" />
<Converters:NotConverter x:Key="nc" />
<!-- TransparentListBox -->
<Style x:Key="TransparentListBox" TargetType="ListBox">
<Setter Property="Foreground" Value="{StaticResource ListBoxForegroundThemeBrush}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="{StaticResource ListBoxBorderThemeBrush}"/>
<Setter Property="BorderThickness" Value="{StaticResource ListBoxBorderThemeThickness}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.HorizontalScrollMode" Value="Disabled"/>
<Setter Property="ScrollViewer.IsHorizontalRailEnabled" Value="True"/>
<Setter Property="ScrollViewer.VerticalScrollMode" Value="Enabled"/>
<Setter Property="ScrollViewer.IsVerticalRailEnabled" Value="True"/>
<Setter Property="ScrollViewer.ZoomMode" Value="Disabled"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="TabNavigation" Value="Once"/>
<Setter Property="FontFamily" Value="{StaticResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{StaticResource ControlContentThemeFontSize}"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<VirtualizingStackPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBox">
<Border x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ListBoxDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused"/>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ScrollViewer x:Name="ScrollViewer"
HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}"
IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}"
Padding="{TemplateBinding Padding}" TabNavigation="{TemplateBinding TabNavigation}"
VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
ZoomMode="{TemplateBinding ScrollViewer.ZoomMode}">
<ItemsPresenter/>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DataGridStyle1" TargetType="controls:DataGrid">
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" />
<Setter Property="HeaderBackground" Value="{ThemeResource SystemControlHighlightChromeHighBrush}" />
<Setter Property="RowBackgroundOddBrush" Value="{ThemeResource SystemControlPageBackgroundChromeLowBrush}" />
<Setter Property="CellTemplate">
<Setter.Value>
<DataTemplate>
<ContentPresenter Margin="12" Content="{Binding Control}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="controls:DataGrid">
<Grid Background="{TemplateBinding Background}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Visibility="Collapsed" Background="{TemplateBinding HeaderBackground}" Height="40" x:Name="ColumnHeaders">
<!-- HACK: Needed so that column DPs are working when adding columns in code only. -->
<ContentPresenter>
<controls:DataGridTextColumn />
</ContentPresenter>
</Grid>
<controls:MtListBox BorderThickness="0" Grid.Row="1"
ItemContainerStyle="{TemplateBinding RowStyle}"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch"
Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}"
Style="{StaticResource TransparentListBox}"
Margin="0" x:Name="Rows" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<Grid Background="Transparent">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0"
Margin="12,0,12,2"
VerticalAlignment="Center"
FontSize="{ThemeResource TextStyleLargeFontSize}"
Content="{Binding Header}" />
<StackPanel Grid.Column="1"
Visibility="{Binding IsSelected, Converter={StaticResource vc}}"
VerticalAlignment="Center"
HorizontalAlignment="Left">
<Path Data="M4,0 L0,8 L8,8 Z" Fill="White" Visibility="{Binding IsAscending, Converter={StaticResource vc}}"/>
<Path Data="M0,0 L4,8 L8,0 Z" Fill="White" Visibility="{Binding IsAscending, Converter={StaticResource nc}}"/>
</StackPanel>
</Grid>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</controls:DataGrid.Resources>
<controls:DataGrid.Style>
<StaticResource ResourceKey="DataGridStyle1"/>
</controls:DataGrid.Style>
Screenshot:
Check my completed demo here

C# WPF Popup placement = center and on top of element

im using a button which contains a popup control. Now i want the popup control to align on top of the button and it should also be centered.
<Style x:Key="ButtonStyle2" TargetType="{x:Type Button}">
<Setter Property="Foreground" Value="White" />
<Setter Property="Padding" Value="2" />
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderBrush" Value="Transparent" />
<Setter Property="HorizontalAlignment" Value="Center" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="Transparent" Padding="{TemplateBinding Padding}" UseLayoutRounding="True">
<Grid>
<Popup x:Name="popup" Placement="Top" AllowsTransparency="True" PopupAnimation="Slide" HorizontalOffset="-7" IsOpen="False">
<DockPanel Width="55" Background="#01FFFFFF">
<Button x:Name="DeleteButton" DockPanel.Dock="Top" Margin="0,0,0,5" Style="{DynamicResource ButtonStyle3}" Background="Transparent" BorderThickness="0" Width="30" Height="30" Click="DeleteButton_Click" />
<Button x:Name="EditButton" DockPanel.Dock="Top" Margin="0,0,0,5" Style="{DynamicResource ButtonStyle4}" Background="Transparent" BorderThickness="0" Width="30" Height="30" Click="EditButton_Click" />
<Button x:Name="AddButton" DockPanel.Dock="Bottom" Margin="0,0,0,5" Style="{DynamicResource ButtonStyle5}" Background="Transparent" BorderThickness="0" Width="30" Height="30" Click="AddButton_Click" />
</DockPanel>
</Popup>
<Image x:Name="add_img" Source="img\menu.png" RenderOptions.BitmapScalingMode="Fant" RenderTransformOrigin="0.5,0.5" UseLayoutRounding="True">
<Image.RenderTransform>
<RotateTransform Angle="0" />
</Image.RenderTransform>
</Image>
</Grid>
</Border>
<ControlTemplate.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard Storyboard="{StaticResource HidePopup}" />
</EventTrigger>
<EventTrigger RoutedEvent="Button.MouseEnter">
<BeginStoryboard Storyboard="{StaticResource ShowPopup}" />
<BeginStoryboard>
<Storyboard BeginTime="00:00:00.000" Duration="00:00:00.300">
<DoubleAnimation Storyboard.TargetName="add_img" Storyboard.TargetProperty="RenderTransform.Angle" From="0" To="180" BeginTime="00:00:00.000" Duration="00:00:00.200" AutoReverse="False" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Button.MouseLeave">
<BeginStoryboard Storyboard="{StaticResource HidePopup}" />
<BeginStoryboard>
<Storyboard BeginTime="00:00:00.000" Duration="00:00:00.300">
<DoubleAnimation Storyboard.TargetName="add_img" Storyboard.TargetProperty="RenderTransform.Angle" From="180" To="0" BeginTime="00:00:00.000" Duration="00:00:00.200" AutoReverse="False" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The code snippet works, but if I use another computer to compile my code, the popup isn't aligned anymore. Is there a better way to do this?

Have you forgotten set the PlacementTarget attribute of the Popup?
Hope that this helps:
<Popup ... PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}"></Popup>

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