SilverLight

开发平台：

C#

DropDownMenuWindow.Theme.xaml：源码内容

							﻿<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:local="clr-namespace:ESRI.ArcGIS.Samples"
	xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows">
	<Style TargetType="local:DropDownMenuWindow">
		<Setter Property="Template">
			<Setter.Value>
				<ControlTemplate TargetType="local:DropDownMenuWindow">
					<Popup x:Name="Popup" IsOpen="True"
						   HorizontalOffset="{TemplateBinding HorizontalOffset}"
						   VerticalOffset="{TemplateBinding VerticalOffset}">
						<vsm:VisualStateManager.VisualStateGroups>
							<vsm:VisualStateGroup x:Name="CommonStates">
								<vsm:VisualState x:Name="Visible">
									<Storyboard BeginTime="00:00:00" Duration="00:00:0.25">
										<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" 
													Storyboard.TargetName="contentPresenter"
													Storyboard.TargetProperty="Visibility">
											<ObjectAnimationUsingKeyFrames.KeyFrames>
												<DiscreteObjectKeyFrame KeyTime="00:00:00" Value="Visible" />
											</ObjectAnimationUsingKeyFrames.KeyFrames>
										</ObjectAnimationUsingKeyFrames>
										<DoubleAnimation BeginTime="00:00:00" Storyboard.TargetName="contentPresenter" 
														 Storyboard.TargetProperty="Opacity" To="1"
														Duration="0:0:0.25" />
									</Storyboard>
								</vsm:VisualState>
								<vsm:VisualState x:Name="Hidden">
									<Storyboard BeginTime="00:00:00" Duration="0:0:.25">
										<ObjectAnimationUsingKeyFrames  BeginTime="00:00:00" 
													Storyboard.TargetName="contentPresenter"
													Storyboard.TargetProperty="Visibility">
											<ObjectAnimationUsingKeyFrames.KeyFrames>
												<DiscreteObjectKeyFrame KeyTime="0:0:0.25" Value="Collapsed" />
											</ObjectAnimationUsingKeyFrames.KeyFrames>
										</ObjectAnimationUsingKeyFrames>
										<DoubleAnimation BeginTime="0" 
														 Storyboard.TargetName="contentPresenter" 
														 Storyboard.TargetProperty="Opacity" To="0" Duration="0:0:0.25" />
									</Storyboard>
								</vsm:VisualState>
							</vsm:VisualStateGroup>
						</vsm:VisualStateManager.VisualStateGroups>
						<ContentPresenter
										x:Name="contentPresenter"
										Opacity="0"
										Content="{TemplateBinding Content}"
										ContentTemplate="{TemplateBinding ContentTemplate}"
										VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
										HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
										Margin="{TemplateBinding Padding}">
							<ContentPresenter.Effect>
								<DropShadowEffect Color="Black" Direction="-45" BlurRadius="20" Opacity=".75" />
							</ContentPresenter.Effect>
						</ContentPresenter>
					</Popup>
				</ControlTemplate>
			</Setter.Value>
		</Setter>
	</Style>
</ResourceDictionary>

						