<mah:MetroWindow x:Class="MyControlsTest.ToolBoxView"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:MyControlsTest"xmlns:iconPacks="http://metro.mahapps.com/winfx/xaml/iconpacks"mc:Ignorable="d"xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"Title="MainWindow" SizeToContent="WidthAndHeight" Background="Transparent" UseNoneWindowStyle="True" AllowsTransparency="True"BorderThickness="0" PreviewMouseDown="MetroWindow_PreviewMouseDown" PreviewMouseMove="MetroWindow_PreviewMouseMove" PreviewMouseLeftButtonUp="MetroWindow_PreviewMouseLeftButtonUp" WindowStartupLocation="CenterScreen"><mah:MetroWindow.Resources><Storyboard x:Key="ExpandStoryboard"><DoubleAnimationStoryboard.TargetName="CtrlGrid"Storyboard.TargetProperty="Width"From="0"To="100"Duration="0:0:0.2"/></Storyboard><Storyboard x:Key="CollapseStoryboard"><DoubleAnimationStoryboard.TargetName="CtrlGrid"Storyboard.TargetProperty="Width"From="100"To="0"Duration="0:0:0.2"/></Storyboard></mah:MetroWindow.Resources><Grid Background="Transparent"><Grid.ColumnDefinitions><ColumnDefinition Width="auto"></ColumnDefinition><ColumnDefinition Width=
