附加系统颜色到LinearGradientBrush

Question

在我的应用程序中，我想创建一个褪色线，有GradientStop s与系统颜色，我试图这样做:

<UserControl.Resources>
    <Style x:Key="Divider" TargetType="Rectangle">
        <Setter Property="Height" Value="2" />
        <Setter Property="Fill">
            <Setter.Value>
                <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                    <GradientStop Color="{StaticResource PhoneChromeBrush}" Offset="0.0" />
                    <GradientStop Color="{StaticResource PhoneInverseBackgroundBrush}" Offset="1.0" />
                </LinearGradientBrush>
            </Setter.Value>
        </Setter>
    </Style>
</UserControl.Resources>

但是当我尝试编译项目时，我得到以下错误:

A first chance exception of type 'System.Windows.Markup.XamlParseException' occurred in System.Windows.ni.dll
An exception of type 'System.Windows.Markup.XamlParseException' occurred in System.Windows.ni.dll but was not handled in user code

我该怎么做来解决这个问题?

Answer 1

GradientStop.Color需要颜色，而不是画笔。使用PhoneChromeColor和PhoneInverseBackgroundColor代替:

<UserControl.Resources>
    <Style x:Key="Divider" TargetType="Rectangle">
        <Setter Property="Height" Value="2" />
        <Setter Property="Fill">
            <Setter.Value>
                <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                    <GradientStop Color="{StaticResource PhoneChromeColor}" Offset="0.0" />
                    <GradientStop Color="{StaticResource PhoneInverseBackgroundColor}" Offset="1.0" />
                </LinearGradientBrush>
            </Setter.Value>
        </Setter>
    </Style>
</UserControl.Resources>

Answer 2

我不确定，但似乎你可能正在设置一个静态颜色作为画笔。这是很难告诉，因为你从来没有发布代码到你的静态资源为'PhoneChromeBrush'或'PhoneInverseBackgroundBrush'。但是你用这些设置渐变停止，如果它们本身就是渐变，可能会破坏你的代码。通常你会为渐变保留"brush"，所以我不确定:

你能不能不要这样做:

<UserControl.Resources>
<LinearGradientBrush x:Key="MoneyBrush" EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#3A883A" Offset="1" />
                <GradientStop Color="#FFFFFF" Offset="0" />
                <GradientStop Color="#FF53AA75" Offset="0.50" />
                <GradientStop Color="#073307" Offset="0.95" />
            </LinearGradientBrush>
        <Style x:Key="Divider" TargetType="Rectangle">
            <Setter Property="Height" Value="2" />
            <Setter Property="Fill" Value="{StaticResource MoneyBrush}"/>
        </Style>
    </UserControl.Resources>