无法将特定组合框项目的 IsSelected 设置为 true
Not able to set IsSelected to true for specific combo box item
Error:System.Windows.Media.Animation.ColorAnimationUsingKeyFrames'
animation object cannot be used to animate property 'Background'
because it is of incompatible type 'System.Windows.Media.Brush.
XML 错误代码：
<ComboBox Canvas.Left="-13" Canvas.Top="11" Height="29" Name="cbDeviceTypeSelection" Width="147" Text="18" SelectionChanged="cbMeterTypeSelection_SelectionChanged_1" >
<ComboBoxItem IsSelected="True" Content="Energy Meter"/>
<ComboBoxItem Content="Flow Meter"/>
</ComboBox>
完成XML代码参考：
<Window x:Class="GES_ServiceManager.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:gridColumn="clr-namespace:GES_ServiceManager.GridView_Controls"
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
xmlns:local="clr-namespace:GES_ServiceManager"
xmlns:control="clr-namespace:GES_ServiceManager.LoadingControl"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
Title="GES-Service Manager" Height="610" ResizeMode="CanMinimize" Width="790" Style="{DynamicResource MetroWindowStyle}" MinHeight="534" MaxWidth="790" MaxHeight="734" MinWidth="790" WindowStartupLocation="CenterScreen" Icon="/GES-ServiceManager;component/Resources/Greenovative_icon.ico" WindowStyle="None" StateChanged="Window_StateChanged" Closed="Window_Closed" Closing="Window_Closing" >
<Window.Resources>
<ResourceDictionary>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Grid>
<Border x:Name="MainBorder" BorderThickness="1,1,1,1" Background="#333" >
<DockPanel LastChildFill="True">
<Border x:Name="PART_TITLEBAR"
Margin="0,0,0,0" Height="40" DockPanel.Dock="Top"
Background="Transparent" MouseLeftButtonDown="PART_TITLEBAR_MouseLeftButtonDown" >
<DockPanel LastChildFill="False">
<Image Margin="7,1,1,1" HorizontalAlignment="Left" Source="Resources\logo-2.png" Height="50" Width="150" Stretch="None" />
<TextBlock Visibility="Hidden" Margin="4,0,0,4" VerticalAlignment="Center"
Foreground="#FFAAAAAA" TextWrapping="NoWrap"
Text="{TemplateBinding Title}" FontSize="16" />
<Button x:Name="PART_CLOSE" DockPanel.Dock="Right"
VerticalAlignment="Center" Margin="5"
Height="45" Width="45"
Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_CLOSE_Click">
<Path Data="F1M54.0573,47.8776L38.1771,31.9974 54.0547,16.1198C55.7604,14.4141 55.7604,11.6511 54.0573,9.94531 52.3516,8.23962 49.5859,8.23962 47.8802,9.94531L32.0026,25.8229 16.1224,9.94531C14.4167,8.23962 11.6511,8.23962 9.94794,9.94531 8.24219,11.6511 8.24219,14.4141 9.94794,16.1198L25.8255,32 9.94794,47.8776C8.24219,49.5834 8.24219,52.3477 9.94794,54.0534 11.6511,55.7572 14.4167,55.7585 16.1224,54.0534L32.0026,38.1745 47.8802,54.0534C49.5859,55.7585 52.3516,55.7572 54.0573,54.0534 55.7604,52.3477 55.763,49.5834 54.0573,47.8776z"
Stretch="Uniform" Fill="#FFF" Width="10" Margin="0,0,0,0" ></Path>
</Button>
<!--<Button x:Name="PART_MAXIMIZE_RESTORE"
DockPanel.Dock="Right" Margin="5"
HorizontalAlignment="Center" VerticalAlignment="Center"
Height="20" Width="20" Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_MAXIMIZE_RESTORE_Click">
<Path Data="M4.3685131,23.127279L4.3685131,47.283243 47.117023,47.283243 47.117023,23.127279z M0,10.684L53.755001,10.684 53.755001,51.668001 0,51.668001z M8.5679998,0L58.668022,0 64,0 64,5.6864691 64,45.317999 58.668022,45.317999 58.668022,5.6864691 8.5679998,5.6864691z"
Stretch="Uniform" Fill="#FFAAAAAA" Width="10" Margin="0,0,0,0" ></Path>
</Button>-->
<Button x:Name="PART_MINIMIZE"
HorizontalAlignment="Center"
VerticalAlignment="Center" Margin="5"
DockPanel.Dock="Right"
Height="40" Width="45" Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_MINIMIZE_Click" VerticalContentAlignment="Center" Padding="1,8,1,1" >
<Button.Content>
<Path Data="M0,20L53.333,20 53.333,8.888 0,8.888z"
Stretch="Uniform" Fill="#FFF" Width="10" Margin="5,0,0,5"></Path>
</Button.Content>
</Button>
</DockPanel>
</Border>
<AdornerDecorator DockPanel.Dock="Bottom">
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}"/>
</AdornerDecorator>
</DockPanel>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="ResizeMode" Value="CanResizeWithGrip">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid>
<AdornerDecorator>
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}"/>
</AdornerDecorator>
<ResizeGrip x:Name="WindowResizeGrip" HorizontalAlignment="Right" IsTabStop="False" Visibility="Collapsed" VerticalAlignment="Bottom"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ResizeMode" Value="CanResizeWithGrip"/>
<Condition Property="WindowState" Value="Normal"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="WindowResizeGrip" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="MetroWindowButtonStyle" TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="True" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="#333"/>
<Setter Property="BorderBrush" Value="#FF707070"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsDefaulted" Value="True">
<Setter Property="BorderBrush" TargetName="border" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border" Value="#8C9196"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FF3C7FB1"/>
<Setter Property="Cursor" TargetName="border" Value="Hand"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" TargetName="border" Value="#8C9196"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FF2C628B"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="border" Value="#FFF4F4F4"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FFADB2B5"/>
<Setter Property="TextElement.Foreground" TargetName="contentPresenter" Value="#FF838383"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="ResourceDictionaries\UserControlStyles.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid Width="787">
<Grid Background="#f2f6f7" x:Name="gridContainer" Margin="0,2,0,1">
<Menu Height="30" HorizontalAlignment="Left" Background="#2c689a" Name="menustrip" VerticalAlignment="Top" Width="790">
<MenuItem Header="Configuration" HorizontalAlignment="Left" IsSubmenuOpen="False" Name="MenuConfiguration" Margin="9,0,0,0" Padding="-3,5,1,1" FontFamily="Roboto" Foreground="#FFF" FontSize="14" FontWeight="SemiBold" TabIndex="1" Click="MenuConfiguration_Click">
<MenuItem.Icon>
<Image Source="Resources\Wrench.png" Height="15" Width="15" Margin="1,-2,3,1"/>
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Autoreport" HorizontalAlignment="Left" IsSubmenuOpen="False" Name="MenuAutoreport" Visibility="Collapsed" Margin="9,0,0,0" Padding="-3,5,1,1" FontFamily="Roboto" Foreground="#FFF" FontSize="14" FontWeight="SemiBold" TabIndex="1" Click="MenuAutoreport_Click">
<MenuItem.Icon>
<Image Source="Resources\Log.png" Height="30" Width="30" Margin="1,-2,3,1"/>
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Log" HorizontalAlignment="Left" IsSubmenuOpen="False" Margin="7,0,0,0" Padding="-3,5,1,1" Foreground="#FFF" FontFamily="Roboto" FontSize="14" FontWeight="DemiBold" TabIndex="2" Click="MenuLog_Click">
<MenuItem.Icon>
<Image Source="/GES-ServiceManager;component/Resources/Log.png" />
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Help" HorizontalAlignment="Left" Margin="9,0,0,0" Padding="-3,5,10,1" Foreground="#FFF" FontFamily="Roboto" FontSize="14" FontWeight="DemiBold" TabIndex="3" FlowDirection="LeftToRight">
<MenuItem.Icon >
<Image Source="Resources\Help.png" Height="18" Width="18" Margin="12,-1,4,1"/>
</MenuItem.Icon>
<MenuItem Header="Help" IsSubmenuOpen="False" Foreground="#FFF" FontFamily="Roboto" FontSize="15" FontWeight="DemiBold" />
<MenuItem Header="About GreenErgy" IsSubmenuOpen="False" Foreground="#FFF" FontFamily="Roboto" FontSize="15" FontWeight="DemiBold" Click="AboutGreenErgy_Click" />
</MenuItem >
</Menu>
<StatusBar Height="23" HorizontalAlignment="Left" Margin="0,0,0,0" Name="lStatus" VerticalAlignment="Bottom" Width="790" Background="White">
<StatusBarItem>
<TextBlock Style="{StaticResource StatusStyle}" Name="lblCurrentStatus" />
</StatusBarItem>
</StatusBar>
<Popup Name="PopupRemark" AllowsTransparency="True" Placement="Left" StaysOpen="False" Opened="PopupRemark_Opened" Visibility="Hidden" >
<Grid x:Name="GrdPopup" Grid.Row="1" Grid.RowSpan="2" Grid.Column="0" Height="Auto" Width="Auto" HorizontalAlignment="Left" Grid.ColumnSpan="2">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left" Margin="6" >
<Border BorderBrush="#A9A9A9" Background="#f2f6f7" CornerRadius="3" Padding="6" VerticalAlignment="Top" x:Name="PopupBorder" >
<Border.Effect>
<DropShadowEffect BlurRadius="18" Color="Black" Opacity="0.7"/>
</Border.Effect>
<StackPanel Orientation="Vertical" HorizontalAlignment="Stretch" Margin="6">
<Label Grid.Row="0" FontSize="13" x:Name="PopupTitle" FontWeight="Bold" FontFamily="Roboto" HorizontalAlignment="Left" Margin="0" />
<Separator></Separator>
<TextBlock x:Name="PopupContent" Foreground="#2c3e50" FontFamily="Roboto" FontSize="11" HorizontalAlignment="Left"></TextBlock>
</StackPanel>
</Border>
<Polygon Points="19.1580170410534,9.57900852052672 4.78950426026336,17.8746732423704 4.78950426026335,1.28334379868299" Fill="#f2f6f7" Margin="-6.5,4,0,0" HorizontalAlignment="Center" Stroke="#f2f6f7" />
</StackPanel>
</Grid>
</Popup>
<Canvas Height="448" HorizontalAlignment="Left" Margin="26,43,0,0" Name="canvas1" VerticalAlignment="Top" Width="724">
<ListView AlternationCount="2" ItemContainerStyle="{StaticResource DeviceRowStyle}" Canvas.Left="-14" Canvas.Top="10" Height="433" Name="lstviewDevices" Padding="-1,0,-13,10" TabIndex="4" Width="150" SelectionChanged="lstviewDevices_SelectionChanged" >
<ListView.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Expander IsExpanded="True">
<Expander.Header>
<TextBlock FontSize="11" FontWeight="Bold" Foreground="Gray" Text="{Binding Name}" ToolTip="{Binding Name}" VerticalAlignment="Bottom" />
</Expander.Header>
<ItemsPresenter />
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
<ListView.View>
<GridView>
<GridViewColumn Header="Device" Width="145">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding DeviceName}" ToolTip="{Binding DeviceName}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,2" Text="" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding DeviceID}" gridColumn:GridViewColumnVisibilityManager.IsVisible="False" Header="DeviceID" Width="0" />
</GridView>
</ListView.View>
</ListView>
<ListView AlternationCount="2" Canvas.Left="134" Canvas.Top="10" Height="433" ItemContainerStyle="{StaticResource MeterRowStyle}" ItemsSource="{Binding}" Name="lstviewMeters" Style="{StaticResource LstEMptyMessege}" TabIndex="5" Width="606" >
<ListView.View>
<GridView>
<GridViewColumn Header="Feeder" Width="195">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding MeterName}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Feeder" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="ID" Width="60">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding MeterID}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="ID" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="Status" Width="80">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Status}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Status" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="TimeStamp" Width="140">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding TimeStamp}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="TimeStamp" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="Remark" Width="128">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ToggleButton Click="btnShowPopup_Click" HorizontalAlignment="Center" Name="btnShowPopup" Style="{StaticResource ToggleButtonStyle}" Tag="{Binding Remark}">
<Image Source="Resources\information.png" />
</ToggleButton>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Remark" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
<ComboBox Canvas.Left="-13" Canvas.Top="11" Height="29" Name="cbDeviceTypeSelection" Width="147" Text="18" SelectionChanged="cbMeterTypeSelection_SelectionChanged_1" >
<ComboBoxItem IsSelected="True" Content="Energy Meter"/>
<ComboBoxItem Content="Flow Meter"/>
</ComboBox>
</Canvas>
<control:LoadingAnimation HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Visible" x:Name="Loader" Margin="380,160,298,205" Canvas.Left="-7" />
<Canvas Canvas.Left="180" Canvas.Top="450" Height="64" Name="canvas2" Width="476" Margin="159,486,131,47">
<Button Canvas.Left="177" Canvas.Top="11" FontSize="16" Height="34" IsEnabled="True" Name="btnStartCommuncation" Style="{StaticResource btnCommunication}" TabIndex="6" Width="93" Click="btnStartCommuncation_Click">
<StackPanel Orientation="Horizontal" Width="91">
<Image Height="25" HorizontalAlignment="Left" Margin="2,0,-23,0" Source="Resources\Start_1.png" Stretch="Uniform" />
<Label Content="START" FontSize="18" Foreground="#FFF" Margin="25,0,0,0" Padding="0,6,0,0" Width="52" />
</StackPanel>
</Button>
<Button Canvas.Left="325" Canvas.Top="10" FontSize="14" Height="34" IsEnabled="True" Name="btnRestartCommunication" Style="{StaticResource btnCommunication}" TabIndex="6" Width="100" Click="btnRestartCommuncation_Click">
<StackPanel Orientation="Horizontal" Width="91">
<Image Height="25" Margin="2,0,-23,0" Source="Resources\restart.png" Stretch="Uniform" />
<Label Content="RESTART" FontSize="16" Foreground="#FFF" Margin="25,0,0,0" Padding="0,6,0,0" Width="93" />
</StackPanel>
</Button>
<Button Canvas.Left="31" Canvas.Top="11" FontSize="16" Height="34" IsEnabled="True" Name="btnStopCommuncation" Style="{StaticResource btnCommunication}" TabIndex="7" Width="93" Click="btnStopCommuncation_Click">
<StackPanel Orientation="Horizontal">
<Image Height="25" HorizontalAlignment="Left" Margin="0,0,-23,0" Source="Resources\Stop_1.png" Stretch="Uniform" />
<Label Content="STOP" FontSize="18" Foreground="#FFF" Margin="26,0,0,0" Padding="0,6,0,0" Width="52" />
</StackPanel>
</Button>
</Canvas>
</Grid>
<ProgressBar Height="29" HorizontalAlignment="Left" Margin="294,239,0,0" Name="progressBar1" VerticalAlignment="Top" Width="253" IsIndeterminate="True" Minimum="0" Maximum="100" ClipToBounds="False"/>
<Canvas Height="50" HorizontalAlignment="Left" Margin="677,-7,0,0" Name="canvas3" VerticalAlignment="Top" Width="114">
<Button Canvas.Left="68" Canvas.Top="9" FontSize="16" IsEnabled="True" Name="btnLogout" Style="{StaticResource btnCommunication}" TabIndex="6" Width="33" Height="30" Click="btnLogout_Click">
<StackPanel Orientation="Horizontal" Width="34" Height="32">
<Image Height="25" HorizontalAlignment="Center" Margin="2,0,-26,0" Source="Resources\logout.png" Stretch="Uniform" />
</StackPanel>
</Button>
</Canvas>
</Grid>
我也试过设置 SelectedIndex="0" 但得到了同样的错误。
Reference Image
您没有向我们展示导致该错误的动画。
某处。
你有一个彩色动画。
顾名思义，这会激活颜色。
黄色到红色或其他。
错误说这与类型刷不兼容。
它是什么。
因为画笔不是颜色。
你有类似的东西：
<SolidColorBrush Color="Blue" x:Name="BrushBeingErroneouslyAnimated"/>
还有一些带有彩色动画的故事板，其目标名称相当于“BrushBeingErroneouslyAnimated”。
或者您可能只是使用 属性 画笔路径。
相反，您应该为画笔使用的颜色设置动画。
<BeginStoryboard>
<Storyboard>
<ColorAnimation To="Red"
Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)"
Duration="0:0:2"/>
</Storyboard>
请注意，这是将动画指向 solidcolorbrush 的颜色 属性。
您已在资源中为 window 使用样式。所以默认情况下适用于您使用的 ComboBox。见以下代码：
<ResourceDictionary>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />
后台 属性 System.Colors.WindowBrushKey 不允许您使用 IsSelected 或 SelectedIndex 属性。要解决此问题，请对资源中的组合框项目使用单独的样式，如下所示：
<ResourceDictionary>
<Style TargetType="ComboBoxItem">
</Style>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />
Error:System.Windows.Media.Animation.ColorAnimationUsingKeyFrames' animation object cannot be used to animate property 'Background' because it is of incompatible type 'System.Windows.Media.Brush.
XML 错误代码：
<ComboBox Canvas.Left="-13" Canvas.Top="11" Height="29" Name="cbDeviceTypeSelection" Width="147" Text="18" SelectionChanged="cbMeterTypeSelection_SelectionChanged_1" >
<ComboBoxItem IsSelected="True" Content="Energy Meter"/>
<ComboBoxItem Content="Flow Meter"/>
</ComboBox>
完成XML代码参考：
<Window x:Class="GES_ServiceManager.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:gridColumn="clr-namespace:GES_ServiceManager.GridView_Controls"
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
xmlns:local="clr-namespace:GES_ServiceManager"
xmlns:control="clr-namespace:GES_ServiceManager.LoadingControl"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
Title="GES-Service Manager" Height="610" ResizeMode="CanMinimize" Width="790" Style="{DynamicResource MetroWindowStyle}" MinHeight="534" MaxWidth="790" MaxHeight="734" MinWidth="790" WindowStartupLocation="CenterScreen" Icon="/GES-ServiceManager;component/Resources/Greenovative_icon.ico" WindowStyle="None" StateChanged="Window_StateChanged" Closed="Window_Closed" Closing="Window_Closing" >
<Window.Resources>
<ResourceDictionary>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Grid>
<Border x:Name="MainBorder" BorderThickness="1,1,1,1" Background="#333" >
<DockPanel LastChildFill="True">
<Border x:Name="PART_TITLEBAR"
Margin="0,0,0,0" Height="40" DockPanel.Dock="Top"
Background="Transparent" MouseLeftButtonDown="PART_TITLEBAR_MouseLeftButtonDown" >
<DockPanel LastChildFill="False">
<Image Margin="7,1,1,1" HorizontalAlignment="Left" Source="Resources\logo-2.png" Height="50" Width="150" Stretch="None" />
<TextBlock Visibility="Hidden" Margin="4,0,0,4" VerticalAlignment="Center"
Foreground="#FFAAAAAA" TextWrapping="NoWrap"
Text="{TemplateBinding Title}" FontSize="16" />
<Button x:Name="PART_CLOSE" DockPanel.Dock="Right"
VerticalAlignment="Center" Margin="5"
Height="45" Width="45"
Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_CLOSE_Click">
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</Button>
<!--<Button x:Name="PART_MAXIMIZE_RESTORE"
DockPanel.Dock="Right" Margin="5"
HorizontalAlignment="Center" VerticalAlignment="Center"
Height="20" Width="20" Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_MAXIMIZE_RESTORE_Click">
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</Button>-->
<Button x:Name="PART_MINIMIZE"
HorizontalAlignment="Center"
VerticalAlignment="Center" Margin="5"
DockPanel.Dock="Right"
Height="40" Width="45" Style="{DynamicResource MetroWindowButtonStyle}"
Click="PART_MINIMIZE_Click" VerticalContentAlignment="Center" Padding="1,8,1,1" >
<Button.Content>
<Path Data="M0,20L53.333,20 53.333,8.888 0,8.888z"
Stretch="Uniform" Fill="#FFF" Width="10" Margin="5,0,0,5"></Path>
</Button.Content>
</Button>
</DockPanel>
</Border>
<AdornerDecorator DockPanel.Dock="Bottom">
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}"/>
</AdornerDecorator>
</DockPanel>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="ResizeMode" Value="CanResizeWithGrip">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Window}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid>
<AdornerDecorator>
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}"/>
</AdornerDecorator>
<ResizeGrip x:Name="WindowResizeGrip" HorizontalAlignment="Right" IsTabStop="False" Visibility="Collapsed" VerticalAlignment="Bottom"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ResizeMode" Value="CanResizeWithGrip"/>
<Condition Property="WindowState" Value="Normal"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="WindowResizeGrip" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="MetroWindowButtonStyle" TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="True" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="#333"/>
<Setter Property="BorderBrush" Value="#FF707070"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsDefaulted" Value="True">
<Setter Property="BorderBrush" TargetName="border" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border" Value="#8C9196"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FF3C7FB1"/>
<Setter Property="Cursor" TargetName="border" Value="Hand"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" TargetName="border" Value="#8C9196"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FF2C628B"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="border" Value="#FFF4F4F4"/>
<Setter Property="BorderBrush" TargetName="border" Value="#FFADB2B5"/>
<Setter Property="TextElement.Foreground" TargetName="contentPresenter" Value="#FF838383"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="ResourceDictionaries\UserControlStyles.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid Width="787">
<Grid Background="#f2f6f7" x:Name="gridContainer" Margin="0,2,0,1">
<Menu Height="30" HorizontalAlignment="Left" Background="#2c689a" Name="menustrip" VerticalAlignment="Top" Width="790">
<MenuItem Header="Configuration" HorizontalAlignment="Left" IsSubmenuOpen="False" Name="MenuConfiguration" Margin="9,0,0,0" Padding="-3,5,1,1" FontFamily="Roboto" Foreground="#FFF" FontSize="14" FontWeight="SemiBold" TabIndex="1" Click="MenuConfiguration_Click">
<MenuItem.Icon>
<Image Source="Resources\Wrench.png" Height="15" Width="15" Margin="1,-2,3,1"/>
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Autoreport" HorizontalAlignment="Left" IsSubmenuOpen="False" Name="MenuAutoreport" Visibility="Collapsed" Margin="9,0,0,0" Padding="-3,5,1,1" FontFamily="Roboto" Foreground="#FFF" FontSize="14" FontWeight="SemiBold" TabIndex="1" Click="MenuAutoreport_Click">
<MenuItem.Icon>
<Image Source="Resources\Log.png" Height="30" Width="30" Margin="1,-2,3,1"/>
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Log" HorizontalAlignment="Left" IsSubmenuOpen="False" Margin="7,0,0,0" Padding="-3,5,1,1" Foreground="#FFF" FontFamily="Roboto" FontSize="14" FontWeight="DemiBold" TabIndex="2" Click="MenuLog_Click">
<MenuItem.Icon>
<Image Source="/GES-ServiceManager;component/Resources/Log.png" />
</MenuItem.Icon>
</MenuItem>
<MenuItem Header="Help" HorizontalAlignment="Left" Margin="9,0,0,0" Padding="-3,5,10,1" Foreground="#FFF" FontFamily="Roboto" FontSize="14" FontWeight="DemiBold" TabIndex="3" FlowDirection="LeftToRight">
<MenuItem.Icon >
<Image Source="Resources\Help.png" Height="18" Width="18" Margin="12,-1,4,1"/>
</MenuItem.Icon>
<MenuItem Header="Help" IsSubmenuOpen="False" Foreground="#FFF" FontFamily="Roboto" FontSize="15" FontWeight="DemiBold" />
<MenuItem Header="About GreenErgy" IsSubmenuOpen="False" Foreground="#FFF" FontFamily="Roboto" FontSize="15" FontWeight="DemiBold" Click="AboutGreenErgy_Click" />
</MenuItem >
</Menu>
<StatusBar Height="23" HorizontalAlignment="Left" Margin="0,0,0,0" Name="lStatus" VerticalAlignment="Bottom" Width="790" Background="White">
<StatusBarItem>
<TextBlock Style="{StaticResource StatusStyle}" Name="lblCurrentStatus" />
</StatusBarItem>
</StatusBar>
<Popup Name="PopupRemark" AllowsTransparency="True" Placement="Left" StaysOpen="False" Opened="PopupRemark_Opened" Visibility="Hidden" >
<Grid x:Name="GrdPopup" Grid.Row="1" Grid.RowSpan="2" Grid.Column="0" Height="Auto" Width="Auto" HorizontalAlignment="Left" Grid.ColumnSpan="2">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left" Margin="6" >
<Border BorderBrush="#A9A9A9" Background="#f2f6f7" CornerRadius="3" Padding="6" VerticalAlignment="Top" x:Name="PopupBorder" >
<Border.Effect>
<DropShadowEffect BlurRadius="18" Color="Black" Opacity="0.7"/>
</Border.Effect>
<StackPanel Orientation="Vertical" HorizontalAlignment="Stretch" Margin="6">
<Label Grid.Row="0" FontSize="13" x:Name="PopupTitle" FontWeight="Bold" FontFamily="Roboto" HorizontalAlignment="Left" Margin="0" />
<Separator></Separator>
<TextBlock x:Name="PopupContent" Foreground="#2c3e50" FontFamily="Roboto" FontSize="11" HorizontalAlignment="Left"></TextBlock>
</StackPanel>
</Border>
<Polygon Points="19.1580170410534,9.57900852052672 4.78950426026336,17.8746732423704 4.78950426026335,1.28334379868299" Fill="#f2f6f7" Margin="-6.5,4,0,0" HorizontalAlignment="Center" Stroke="#f2f6f7" />
</StackPanel>
</Grid>
</Popup>
<Canvas Height="448" HorizontalAlignment="Left" Margin="26,43,0,0" Name="canvas1" VerticalAlignment="Top" Width="724">
<ListView AlternationCount="2" ItemContainerStyle="{StaticResource DeviceRowStyle}" Canvas.Left="-14" Canvas.Top="10" Height="433" Name="lstviewDevices" Padding="-1,0,-13,10" TabIndex="4" Width="150" SelectionChanged="lstviewDevices_SelectionChanged" >
<ListView.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Expander IsExpanded="True">
<Expander.Header>
<TextBlock FontSize="11" FontWeight="Bold" Foreground="Gray" Text="{Binding Name}" ToolTip="{Binding Name}" VerticalAlignment="Bottom" />
</Expander.Header>
<ItemsPresenter />
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
<ListView.View>
<GridView>
<GridViewColumn Header="Device" Width="145">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding DeviceName}" ToolTip="{Binding DeviceName}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,2" Text="" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding DeviceID}" gridColumn:GridViewColumnVisibilityManager.IsVisible="False" Header="DeviceID" Width="0" />
</GridView>
</ListView.View>
</ListView>
<ListView AlternationCount="2" Canvas.Left="134" Canvas.Top="10" Height="433" ItemContainerStyle="{StaticResource MeterRowStyle}" ItemsSource="{Binding}" Name="lstviewMeters" Style="{StaticResource LstEMptyMessege}" TabIndex="5" Width="606" >
<ListView.View>
<GridView>
<GridViewColumn Header="Feeder" Width="195">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding MeterName}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Feeder" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="ID" Width="60">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding MeterID}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="ID" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="Status" Width="80">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Status}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Status" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="TimeStamp" Width="140">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding TimeStamp}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="TimeStamp" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
<GridViewColumn Header="Remark" Width="128">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ToggleButton Click="btnShowPopup_Click" HorizontalAlignment="Center" Name="btnShowPopup" Style="{StaticResource ToggleButtonStyle}" Tag="{Binding Remark}">
<Image Source="Resources\information.png" />
</ToggleButton>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Padding="2,4,3,3" Text="Remark" />
</StackPanel>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
<ComboBox Canvas.Left="-13" Canvas.Top="11" Height="29" Name="cbDeviceTypeSelection" Width="147" Text="18" SelectionChanged="cbMeterTypeSelection_SelectionChanged_1" >
<ComboBoxItem IsSelected="True" Content="Energy Meter"/>
<ComboBoxItem Content="Flow Meter"/>
</ComboBox>
</Canvas>
<control:LoadingAnimation HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Visible" x:Name="Loader" Margin="380,160,298,205" Canvas.Left="-7" />
<Canvas Canvas.Left="180" Canvas.Top="450" Height="64" Name="canvas2" Width="476" Margin="159,486,131,47">
<Button Canvas.Left="177" Canvas.Top="11" FontSize="16" Height="34" IsEnabled="True" Name="btnStartCommuncation" Style="{StaticResource btnCommunication}" TabIndex="6" Width="93" Click="btnStartCommuncation_Click">
<StackPanel Orientation="Horizontal" Width="91">
<Image Height="25" HorizontalAlignment="Left" Margin="2,0,-23,0" Source="Resources\Start_1.png" Stretch="Uniform" />
<Label Content="START" FontSize="18" Foreground="#FFF" Margin="25,0,0,0" Padding="0,6,0,0" Width="52" />
</StackPanel>
</Button>
<Button Canvas.Left="325" Canvas.Top="10" FontSize="14" Height="34" IsEnabled="True" Name="btnRestartCommunication" Style="{StaticResource btnCommunication}" TabIndex="6" Width="100" Click="btnRestartCommuncation_Click">
<StackPanel Orientation="Horizontal" Width="91">
<Image Height="25" Margin="2,0,-23,0" Source="Resources\restart.png" Stretch="Uniform" />
<Label Content="RESTART" FontSize="16" Foreground="#FFF" Margin="25,0,0,0" Padding="0,6,0,0" Width="93" />
</StackPanel>
</Button>
<Button Canvas.Left="31" Canvas.Top="11" FontSize="16" Height="34" IsEnabled="True" Name="btnStopCommuncation" Style="{StaticResource btnCommunication}" TabIndex="7" Width="93" Click="btnStopCommuncation_Click">
<StackPanel Orientation="Horizontal">
<Image Height="25" HorizontalAlignment="Left" Margin="0,0,-23,0" Source="Resources\Stop_1.png" Stretch="Uniform" />
<Label Content="STOP" FontSize="18" Foreground="#FFF" Margin="26,0,0,0" Padding="0,6,0,0" Width="52" />
</StackPanel>
</Button>
</Canvas>
</Grid>
<ProgressBar Height="29" HorizontalAlignment="Left" Margin="294,239,0,0" Name="progressBar1" VerticalAlignment="Top" Width="253" IsIndeterminate="True" Minimum="0" Maximum="100" ClipToBounds="False"/>
<Canvas Height="50" HorizontalAlignment="Left" Margin="677,-7,0,0" Name="canvas3" VerticalAlignment="Top" Width="114">
<Button Canvas.Left="68" Canvas.Top="9" FontSize="16" IsEnabled="True" Name="btnLogout" Style="{StaticResource btnCommunication}" TabIndex="6" Width="33" Height="30" Click="btnLogout_Click">
<StackPanel Orientation="Horizontal" Width="34" Height="32">
<Image Height="25" HorizontalAlignment="Center" Margin="2,0,-26,0" Source="Resources\logout.png" Stretch="Uniform" />
</StackPanel>
</Button>
</Canvas>
</Grid>
我也试过设置 SelectedIndex="0" 但得到了同样的错误。
Reference Image
您没有向我们展示导致该错误的动画。
某处。
你有一个彩色动画。
顾名思义，这会激活颜色。
黄色到红色或其他。
错误说这与类型刷不兼容。
它是什么。
因为画笔不是颜色。
你有类似的东西：
<SolidColorBrush Color="Blue" x:Name="BrushBeingErroneouslyAnimated"/>
还有一些带有彩色动画的故事板，其目标名称相当于“BrushBeingErroneouslyAnimated”。 或者您可能只是使用 属性 画笔路径。
相反，您应该为画笔使用的颜色设置动画。
<BeginStoryboard>
<Storyboard>
<ColorAnimation To="Red"
Storyboard.TargetProperty="(Rectangle.Fill).(SolidColorBrush.Color)"
Duration="0:0:2"/>
</Storyboard>
请注意，这是将动画指向 solidcolorbrush 的颜色 属性。
您已在资源中为 window 使用样式。所以默认情况下适用于您使用的 ComboBox。见以下代码：
<ResourceDictionary>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />
后台 属性 System.Colors.WindowBrushKey 不允许您使用 IsSelected 或 SelectedIndex 属性。要解决此问题，请对资源中的组合框项目使用单独的样式，如下所示：
<ResourceDictionary>
<Style TargetType="ComboBoxItem">
</Style>
<Style x:Key="MetroWindowStyle" TargetType="{x:Type Window}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="WindowStyle" Value="None" />