Windows 8实用窍门系列：6.Windows 8中的Popup使用方式

　　在上一篇文章中我们将了替代Silverlight中MessageBox的MessageDialog控件,本篇文章将讲诉另外一种弹出提示窗口的控件Popup。

　　一、我们认识Popup控件的IsLightDismissEnabled属性，这个属性设置为true的时候，点击非Popup控件外任何区域将关闭Popup。

        <Button Content="弹出窗口一" Name="btn1" Width="108"
                Margin="161,96,0,0" VerticalAlignment="Top" Height="52" Click="btn1_Click"/>
        <Popup x:Name="tip1" IsLightDismissEnabled="True"
               HorizontalOffset="161" VerticalOffset="250">
            <Grid Width="312" Height="200" >
                <Grid.Background>
                    <ImageBrush ImageSource="./BG.png"></ImageBrush>
                </Grid.Background>
                <TextBlock Grid.Row="0" Foreground="White" Grid.Column="0"
                           FontSize="15" Height="Auto" HorizontalAlignment="Center" 
                           Margin="0 20 0 0" VerticalAlignment="Top">
                    <Run>众芳摇落独暄妍，占尽风情向小园</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>疏影横斜水清浅，暗香浮动月黄昏</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>霜禽欲下先偷眼，粉蝶如知合断魂</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>幸有微吟可相狎，不须檀板共金樽</Run>
                </TextBlock>
            </Grid>
        </Popup>

　　二、我们看Popup的显示和隐藏时的动画设置，具体类型有以下几种，具体效果可以自己下载实例并且修改实例来观看。

AddDeleteThemeTransition

ContentThemeTransition

EdgeUIThemeTransition

EntranceThemeTransition

PaneThemeTransition

PopupThemeTransition

ReorderThemeTransition

RepositionThemeTransition

        <Button Content="弹出窗口二" x:Name="btn1_Copy" Width="108"
                Margin="510,96,0,0" VerticalAlignment="Top" Height="52" Click="btn1_Copy_Click"/>
        <Popup x:Name="tip2" IsLightDismissEnabled="True"
               HorizontalOffset="510" VerticalOffset="250">
            <Popup.ChildTransitions>
                <TransitionCollection>
                    <AddDeleteThemeTransition></AddDeleteThemeTransition>
                    <ContentThemeTransition/>
                    <EdgeUIThemeTransition></EdgeUIThemeTransition>
                    <EntranceThemeTransition></EntranceThemeTransition>
                    <PaneThemeTransition></PaneThemeTransition>
                    <PopupThemeTransition></PopupThemeTransition>
                    <ReorderThemeTransition></ReorderThemeTransition>
                    <RepositionThemeTransition></RepositionThemeTransition>
                </TransitionCollection>
            </Popup.ChildTransitions>
            <Grid Width="312" Height="200" >
                <Grid.Background>
                    <ImageBrush ImageSource="./BG.png"></ImageBrush>
                </Grid.Background>
                <TextBlock Grid.Row="0" Foreground="Yellow" Grid.Column="0"
                           FontSize="15" Height="Auto" HorizontalAlignment="Center" 
                           Margin="0 20 0 0" VerticalAlignment="Top">
                    <Run>莫笑农家腊酒浑，丰年留客足鸡豚</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>山重水复疑无路，柳暗花明又一村</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>萧鼓追随春社近，衣冠简朴古风存</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>从今若许闲乘月，拄杖无时夜叩门</Run>
                </TextBlock>
            </Grid>
        </Popup>

        <Button Content="弹出窗口三" x:Name="btn1_Copy1" Width="108"
                Margin="850,96,0,0" VerticalAlignment="Top" Height="52" Click="btn1_Copy1_Click"  />
        <Popup x:Name="tip3" IsLightDismissEnabled="True" VerticalOffset="250"
               HorizontalOffset="-312" HorizontalAlignment="Right">
            <Popup.ChildTransitions>
                <TransitionCollection>
                    <PaneThemeTransition />
                </TransitionCollection>
            </Popup.ChildTransitions>
            <Grid Width="312" Height="200" >
                <Grid.Background>
                    <ImageBrush ImageSource="./BG.png"></ImageBrush>
                </Grid.Background>
                <TextBlock Grid.Row="0" Foreground="Coral" Grid.Column="0"
                           FontSize="15" Height="Auto" HorizontalAlignment="Center" 
                           Margin="0 20 0 0" VerticalAlignment="Top">
                    <Run>舍南舍北皆春水，但见群鸥日日来</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>花径不曾缘客扫，蓬门今始为君开</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>盘飧市远无兼味，樽酒家贫只旧醅</Run>
                    <LineBreak/>
                    <LineBreak/>
                    <Run>肯与邻翁相对饮，隔篱呼取尽馀杯</Run>
                </TextBlock>
            </Grid>
        </Popup>

　　三、Popup的内容还可以直接继承于用户控件，以将用户控件直接弹出。下面的实例代码中UC1是一个用户控件，可下载源码观看

        <Button Content="弹出窗口四" x:Name="btn1_Copy2" Width="108"
            Margin="1150,96,0,0" VerticalAlignment="Top" Height="52" Click="btn1_Copy2_Click" />
        <Popup x:Name="tip4" IsLightDismissEnabled="True" 
               HorizontalOffset="850" VerticalOffset="250">
            <Popup.ChildTransitions>
                <TransitionCollection>
                    <AddDeleteThemeTransition/>
                </TransitionCollection>
            </Popup.ChildTransitions>
            <local:UC1/>
        </Popup>

　　最后如需源码请点击 Win8Popup.rar 下载.效果图如下：