<ResourceDictionary    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:local="clr-namespace:SuperMapStandardMapApp1"><Style TargetType="local:CustomPanel"><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="local:CustomPanel"><Grid   x:Name="LayoutRoot" RenderTransformOrigin="{TemplateBinding RenderTransformOrigin}"><VisualStateManager.VisualStateGroups><VisualStateGroup x:Name="ViewStates"><VisualState x:Name="Open"><Storyboard><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.3" Storyboard.TargetName="CustomPanelScale" Storyboard.TargetProperty="ScaleY" To="1" /><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.3" Storyboard.TargetName="CustomPanelScale" Storyboard.TargetProperty="ScaleX" To="1" /><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.3" Storyboard.TargetName="LayoutRoot" Storyboard.TargetProperty="Opacity" To="1" /></Storyboard></VisualState><VisualState x:Name="Close"><Storyboard><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.2" Storyboard.TargetName="LayoutRoot" Storyboard.TargetProperty="Opacity" To="0" /><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.2" Storyboard.TargetName="CustomPanelScale" Storyboard.TargetProperty="ScaleY" To="0" /><DoubleAnimation BeginTime="00:00:00" Duration="00:00:0.2" Storyboard.TargetName="CustomPanelScale" Storyboard.TargetProperty="ScaleX" To="1" /></Storyboard></VisualState></VisualStateGroup></VisualStateManager.VisualStateGroups><ContentPresenter x:Name="Content"                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"                                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"                                Content="{TemplateBinding Content}"                                   ContentTemplate="{TemplateBinding ContentTemplate}"></ContentPresenter><Grid.RenderTransform><ScaleTransform x:Name="CustomPanelScale" ScaleX="1" ScaleY="1" /></Grid.RenderTransform></Grid></ControlTemplate></Setter.Value></Setter><Setter Property="Foreground" Value="Red"/></Style>

</ResourceDictionary>

namespace SuperMapStandardMapApp1{    [TemplateVisualState(GroupName = "ViewStates", Name = "Open")]    [TemplateVisualState(GroupName = "ViewStates", Name = "Close")]public partial class CustomPanel : ContentControl    {public CustomPanel()        {            DefaultStyleKey = typeof(CustomPanel);        }

public override void OnApplyTemplate()        {base.OnApplyTemplate();this.ChangeVisualState(true);        }

#region Dependency Properties

/// <summary>/// 获取或设置内容控件是否显示/// </summary>/// <value>///     <c>true</c> 设置时控件进行显示; 否则不显示, <c>false</c>./// </value>/// 

public bool IsOpnen        {get { return (bool)GetValue(IsOpenProperty); }set { SetValue(IsOpenProperty, value); }

        }

public static readonly DependencyProperty IsOpenProperty = DependencyProperty.Register("IsOpen", typeof(bool), typeof(CustomPanel), new PropertyMetadata(true, OnIsOpenPertyChange));

public static void OnIsOpenPertyChange(DependencyObject obj, DependencyPropertyChangedEventArgs e)        {            (obj as CustomPanel).ChangeVisualState(true);        }

#endregion

private void ChangeVisualState(bool useTransitions)        {if (IsOpnen)            {                VisualStateManager.GoToState(this, "Open", useTransitions);            }else            {                VisualStateManager.GoToState(this, "Close", useTransitions);            }        }

    }}