RadioButton样式崩溃(?)

时间:2011-10-03 06:58:41

标签: silverlight

我写了RadioButton样式 - 代码崩溃了,我没有找到任何理由让这次崩溃。

<Style x:Key="RadioButtonStyle2" TargetType="RadioButton">

    <Setter Property="Foreground"                   Value="#5DFFC8" />

    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="RadioButton">

                <Grid>
                    <vsm:VisualStateManager.VisualStateGroups>
                        <vsm:VisualStateGroup x:Name="CheckStates">
                            <vsm:VisualState x:Name="Checked">
                                <Storyboard>

                                    <DoubleAnimation Duration="0" Storyboard.TargetName="RadioButtonStyle2" Storyboard.TargetProperty="Opacity" To="1"/>

                                    <ColorAnimation Duration="0" Storyboard.TargetName="RadioButtonStyle2" Storyboard.TargetProperty="Foreground" To="Black" />

                                </Storyboard>
                            </vsm:VisualState>

2 个答案:

答案 0 :(得分:1)

注意:此答案中的第一个代码块会尝试重复此问题:

<UserControl x:Class="SilverlightApplication2.MainPage"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows"
             mc:Ignorable="d"
             d:DesignHeight="300"
             d:DesignWidth="400">
    <UserControl.Resources>
        <Style x:Key="RadioButtonStyle2"
               TargetType="RadioButton">
            <Setter Property="Foreground"
                    Value="#5DFFC8" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="RadioButton">
                        <Grid>
                            <vsm:VisualStateManager.VisualStateGroups>
                                <vsm:VisualStateGroup x:Name="CheckStates">
                                    <vsm:VisualState x:Name="Checked">
                                        <Storyboard>
                                            <DoubleAnimation Duration="0"
                                                             Storyboard.TargetName="RadioButtonPart"
                                                             Storyboard.TargetProperty="Opacity"
                                                             To="1" />

                                            <ColorAnimation Duration="0"
                                                            Storyboard.TargetName="RadioButtonPart"
                                                            Storyboard.TargetProperty="Foreground"
                                                            To="Black" />

                                        </Storyboard>
                                    </vsm:VisualState>
                                </vsm:VisualStateGroup>
                            </vsm:VisualStateManager.VisualStateGroups>
                            <RadioButton x:Name="RadioButtonPart" Foreground="{TemplateBinding Foreground}"/>

                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot"
          Background="White">
        <RadioButton Style="{StaticResource RadioButtonStyle2}" IsChecked="True">Test</RadioButton>
    </Grid>
</UserControl>

如果所显示的代码全部存在,则会遗漏很多。

我粘贴了我用来测试你的风格的代码并添加了一些代码。看一下设计器中的异常,它可能看起来像这样:

Exception information

这应该告诉你出了什么问题。在我的代码中,Foreground属性(Brush)的类型与动画(Color)之间存在不匹配。

您可以通过设置画笔的颜色属性(SolidBrush)

来使它们匹配

下面是一个更好的工作样本(仍然不完整,但动画有效)

<UserControl x:Class="SilverlightApplication2.MainPage"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows"
             mc:Ignorable="d"
             d:DesignHeight="300"
             d:DesignWidth="400">
    <UserControl.Resources>
        <Style x:Key="RadioButtonStyle2"
               TargetType="RadioButton">
            <Setter Property="Foreground"
                    Value="#5DFFC8" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="RadioButton">
                        <Grid>
                            <vsm:VisualStateManager.VisualStateGroups>
                                <vsm:VisualStateGroup x:Name="CheckStates">
                                    <vsm:VisualState x:Name="Checked">
                                        <Storyboard>
                                            <DoubleAnimation Duration="0"
                                                             Storyboard.TargetName="RadioButtonPart"
                                                             Storyboard.TargetProperty="Opacity"
                                                             To="1" />

                                            <ColorAnimation Duration="0"
                                                            Storyboard.TargetName="radioButtonForegroundColor"
                                                            Storyboard.TargetProperty="Color"
                                                            To="Black" />

                                        </Storyboard>
                                    </vsm:VisualState>
                                    <vsm:VisualState x:Name="Unchecked">
                                        <Storyboard>
                                            <DoubleAnimation Duration="0"
                                                             Storyboard.TargetName="RadioButtonPart"
                                                             Storyboard.TargetProperty="Opacity"
                                                             To="0.5" />

                                            <ColorAnimation Duration="0"
                                                            Storyboard.TargetName="radioButtonForegroundColor"
                                                            Storyboard.TargetProperty="Color"
                                                            To="Red" />

                                        </Storyboard>
                                    </vsm:VisualState>
                                </vsm:VisualStateGroup>
                            </vsm:VisualStateManager.VisualStateGroups>
                            <RadioButton x:Name="RadioButtonPart"
                                         IsChecked="{TemplateBinding IsChecked}"
                                         Content="{TemplateBinding Content}">
                                <RadioButton.Foreground>
                                    <SolidColorBrush Color="White"
                                                     x:Name="radioButtonForegroundColor" />
                                </RadioButton.Foreground>
                            </RadioButton>

                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot"
          Background="White">
        <StackPanel>
            <RadioButton Style="{StaticResource RadioButtonStyle2}"
                         Content="Test 1" />
            <RadioButton Style="{StaticResource RadioButtonStyle2}"
                         IsChecked="False"
                         Content="Test 2" />
        </StackPanel>
    </Grid>
</UserControl>

答案 1 :(得分:0)

真正的问题是

Storyboard.TargetName="RadioButtonStyle2"

RadioButtonStyle2 是此Style的名称。 TargetName应该是您在ControlTemplate中定义的控件之一的名称。

当您尝试使用此样式检查RadioButton时,它会给您一个错误。如果您使用Expression Blend,转到此样式中的Checked状态,它会向您显示错误, 动画正在尝试修改名为“RadioButtonStyle2”的对象,但在网格中找不到此类对象。

我看到你正在尝试在选中此RadioButton时更改不透明度和前景色。为此,您需要在Grid中添加ContentControl。并在Checked可视状态中更改此GridControl的网格不透明度和前景颜色,而不是样式本身。

希望这有帮助。

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