Windows phone 8.1 Windows Phone 8.1上的“处理后退”按钮_Windows Phone 8.1

Windows phone 8.1 Windows Phone 8.1上的“处理后退”按钮

windows-phone-8.1

Windows phone 8.1 Windows Phone 8.1上的“处理后退”按钮,windows-phone-8.1,Windows Phone 8.1,我的Windows Phone 8.1应用程序中有2个页面 <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" > <Button.Background > <ImageBrush ImageSource="

我的Windows Phone 8.1应用程序中有2个页面

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

第一页显示9个图像按钮。其目的是允许用户输入其4位PIN以进入下一屏幕

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

情景：

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

用户输入PIN并进入第二屏幕

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我去睡觉

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我醒来

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我去我的手机

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我在第二屏

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我按下后退按钮

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

“我的按钮”上的图像不显示

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我仍然可以按我的“隐形”按钮

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

为什么我的图像不显示

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

我的xaml：

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

        <Button BorderThickness="0" Name="btn4" Grid.Row="2" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-4-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn5" Grid.Row="2" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-5-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn6" Grid.Row="2" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-6-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button BorderThickness="0" Name="btn7" Grid.Row="3" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-7-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn8" Grid.Row="3" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-8-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btn9" Grid.Row="3" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-9-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

        <Button  BorderThickness="0" Name="btnReset" Grid.Row="4" Grid.Column="0" Width="75" Height="75" HorizontalAlignment="Center" Margin="0" Padding="9.5,0,9.5,3.5" >
            <Button.Background  >
                <ImageBrush ImageSource="ms-appx:///Images/undo.png" Stretch="Uniform" />
            </Button.Background>
        </Button>
        <Button  BorderThickness="0" Name="btn0" Grid.Row="4" Grid.Column="1" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/Number-0-icon.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>
        <Button BorderThickness="0" Name="btnDel" Grid.Row="4" Grid.Column="2" Width="75" Height="75" HorizontalAlignment="Center" >
            <Button.Background >
                <ImageBrush ImageSource="/Images/delete_key.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>

    </Grid>
    <Grid x:Name="Footer" Background="Black" Grid.Row="4" >
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Name="txtError" Grid.Column="0" FontSize="18" Margin="10,10,10,10" Text="Enter PIN" HorizontalAlignment="Center" VerticalAlignment="Center"  TextAlignment="Center" Foreground="#FFE8E82F" FontWeight="Bold"  />

    </Grid>
</Grid>

你能显示代码吗？特别是那些带有图像的按钮，你如何加载图像？您的应用程序有可能被终止，然后被恢复。@Romasz您好，我将发布xaml。。