C#(Wpf)实现小键盘

<Style x:Key="KeyButton" TargetType="Button">
        <Setter Property="Background" Value="White"/>
        <Setter Property="Margin" Value="1,2"/>
        <Setter Property="Width" Value="24"/>
        <Setter Property="Height" Value="24"/>
        <Setter Property="BorderThickness" Value=".5"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Grid>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[0].(GradientStop.Color)" To="#47C9FB"/>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[1].(GradientStop.Color)" To="#2BA8E8"/>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[2].(GradientStop.Color)" To="#1097D7"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[0].(GradientStop.Color)" To="#1097D7"/>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[1].(GradientStop.Color)" To="#2BA8E8"/>
                                        <ColorAnimation Duration="0" Storyboard.TargetName="BackgroundGradient" Storyboard.TargetProperty="(Rectangle.Fill).(GradientBrush.GradientStops)[2].(GradientStop.Color)" To="#47C9FB"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled" />
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Focused" />
                                <VisualState x:Name="Unfocused" />
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <Border x:Name="Background"  Background="White" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                            <Grid Background="{TemplateBinding Background}">
                                <Rectangle x:Name="BackgroundGradient" >
                                    <Rectangle.Fill>
                                        <LinearGradientBrush StartPoint=".5,0" EndPoint=".5,1">
                                            <GradientStop Color="White" Offset="0" />
                                            <GradientStop Color="White"  Offset="0.4" />
                                            <GradientStop Color="White" Offset="1" />
                                        </LinearGradientBrush>
                                    </Rectangle.Fill>
                                </Rectangle>
                            </Grid>
                        </Border>
                        <ContentPresenter
                              x:Name="contentPresenter"
                              Content="{TemplateBinding Content}"
                              ContentTemplate="{TemplateBinding ContentTemplate}"
                              VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                              HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                              Margin="{TemplateBinding Padding}"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

<Style TargetType="{x:Type local:KeyBoard}">
        <Setter Property="Width" Value="360px"></Setter>
        <Setter Property="Height" Value="108px"></Setter>
        <Setter Property="AllowsTransparency" Value="true"/>
        <Setter Property="ResizeMode" Value="NoResize"/>
        <Setter Property="WindowStyle" Value="None"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:KeyBoard}">
                    <Border Background="#2092D8"
                            BorderBrush="#043150"
                            BorderThickness="1" CornerRadius="2">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition />
                                <RowDefinition />
                                <RowDefinition />
                                <RowDefinition /> 
                            </Grid.RowDefinitions>
                            <StackPanel Orientation="Horizontal">
                                <Button x:Name="btnNum2" Margin="10,2,1,2" Style="{StaticResource KeyButton}">2</Button>
                                <Button x:Name="btnNum3" Style="{StaticResource KeyButton}">3</Button>
                                <Button x:Name="btnNum4" Style="{StaticResource KeyButton}">4</Button>
                                <Button x:Name="btnNum5" Style="{StaticResource KeyButton}">5</Button>
                                <Button x:Name="btnNum6" Style="{StaticResource KeyButton}">6</Button>
                                <Button x:Name="btnNum7" Style="{StaticResource KeyButton}">7</Button>
                                <Button x:Name="btnNum8" Style="{StaticResource KeyButton}">8</Button>
                                <Button x:Name="btnNum9" Style="{StaticResource KeyButton}">9</Button>
                                <Button x:Name="btnNum0" Style="{StaticResource KeyButton}">0</Button>
                                <Button x:Name="btnDot" Style="{StaticResource KeyButton}">`</Button>
                                <Button x:Name="btnNum1" Style="{StaticResource KeyButton}">1</Button>
                                <Button x:Name="btnDelete" Style="{StaticResource KeyButton}" Width="45">&lt;-</Button>
                            </StackPanel>
                            <StackPanel Orientation="Horizontal" Grid.Row="1">
                                <Button x:Name="btnShift" Margin="2,2,1,2" Style="{StaticResource KeyButton}" Width="30">Shift</Button>
                                <Button x:Name="btnBackslant" Style="{StaticResource KeyButton}">\</Button>
                                <Button x:Name="btnLParenthesis" Style="{StaticResource KeyButton}">[</Button>
                                <Button x:Name="btnRParenthesis" Style="{StaticResource KeyButton}">]</Button>
                                <Button x:Name="btnSemicolon" Style="{StaticResource KeyButton}">;</Button>
                                <Button x:Name="btnSQuotes" Style="{StaticResource KeyButton}">‘</Button>
                                <Button x:Name="btnComma" Style="{StaticResource KeyButton}">,</Button>
                                <Button x:Name="btnPeriod" Style="{StaticResource KeyButton}">.</Button>
                                <Button x:Name="btnSlant" Style="{StaticResource KeyButton}">/</Button>
                                <Button x:Name="btnSub" Style="{StaticResource KeyButton}">-</Button>
                                <Button x:Name="btnEquip" Style="{StaticResource KeyButton}">=</Button>
                                <Button x:Name="btnCapsLock" Style="{StaticResource KeyButton}" Width="62">Caps Lock</Button>
                            </StackPanel>
                            <StackPanel Orientation="Horizontal" Grid.Row="2">
                                <Button x:Name="btnj" Margin="10,2,1,2" Style="{StaticResource KeyButton}">j</Button>
                                <Button x:Name="btnk" Style="{StaticResource KeyButton}">k</Button>
                                <Button x:Name="btnl" Style="{StaticResource KeyButton}">l</Button>
                                <Button x:Name="btnm" Style="{StaticResource KeyButton}">m</Button>
                                <Button x:Name="btna" Style="{StaticResource KeyButton}">a</Button>
                                <Button x:Name="btnb" Style="{StaticResource KeyButton}">b</Button>
                                <Button x:Name="btnc" Style="{StaticResource KeyButton}">c</Button>
                                <Button x:Name="btnd" Style="{StaticResource KeyButton}">d</Button>
                                <Button x:Name="btne" Style="{StaticResource KeyButton}">e</Button>
                                <Button x:Name="btnf" Style="{StaticResource KeyButton}">f</Button>
                                <Button x:Name="btng" Style="{StaticResource KeyButton}">g</Button>
                                <Button x:Name="btnh" Style="{StaticResource KeyButton}">h</Button>
                                <Button x:Name="btni" Style="{StaticResource KeyButton}">i</Button>
                            </StackPanel>
                            <StackPanel Orientation="Horizontal" Grid.Row="3">
                                <Button x:Name="btnp" Margin="10,2,1,2" Style="{StaticResource KeyButton}">p</Button>
                                <Button x:Name="btnq" Style="{StaticResource KeyButton}">q</Button>
                                <Button x:Name="btnr" Style="{StaticResource KeyButton}">r</Button>
                                <Button x:Name="btns" Style="{StaticResource KeyButton}">s</Button>
                                <Button x:Name="btnt" Style="{StaticResource KeyButton}">t</Button>
                                <Button x:Name="btnu" Style="{StaticResource KeyButton}">u</Button>
                                <Button x:Name="btnv" Style="{StaticResource KeyButton}">v</Button>
                                <Button x:Name="btnw" Style="{StaticResource KeyButton}">w</Button>
                                <Button x:Name="btnx" Style="{StaticResource KeyButton}">x</Button>
                                <Button x:Name="btny" Style="{StaticResource KeyButton}">y</Button>
                                <Button x:Name="btnz" Style="{StaticResource KeyButton}">z</Button>
                                <Button x:Name="btnn" Style="{StaticResource KeyButton}">n</Button>
                                <Button x:Name="btno" Style="{StaticResource KeyButton}">o</Button>
                            </StackPanel>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>