问题描述
当鼠标悬停在我的ComboBox上时，我得到一个可怕的蓝色/浅蓝色对的颜色为我的ComboBox的背景。
我尝试了这里的解决方案：，，或，但它没有改变任何东西，我仍然得到默认颜色，而悬停。
When the mouse hover over my ComboBox, I get an awful blue/lightblue pair of color for the backgroung of my ComboBox.I tried the solutions here :ComboBox Mouse over color, WPF Combobox Mouse Over, How to style ComboBox Background on Mouse Hover? or WPF combobox default hover color on togglebutton, but it doesn't change anything, I still get the default colors while hovering.
有任何建议吗？
感谢大家，
Demasiado。
Thank you all in advance,Demasiado.
是XAML代码：
<Window x:Class="Homepage.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
<Window.Resources>
<Storyboard x:Key="TileZoomIn">
<ThicknessAnimation Storyboard.TargetProperty="Margin" From="10" To="1" Duration="0:0:0.1"/>
</Storyboard>
<Storyboard x:Key="TileZoomOut">
<ThicknessAnimation Storyboard.TargetProperty="Margin" From="1" To="10" Duration="0:0:0.1"/>
</Storyboard>
<DropShadowEffect x:Key="DropShadowEffect" BlurRadius="20" Opacity="1" ShadowDepth="0" Color="White"/>
</Window.Resources>
<Grid ShowGridLines="True">
<ComboBox Name="comboBoxTRIG" FontSize="40" Width="210" Height="98" HorizontalAlignment="Left" HorizontalContentAlignment="Center" Margin="40,-180,0,256" Background="Transparent" BorderBrush="Transparent" Foreground="White" BorderThickness="0">
<ComboBox Margin="25" Width="130" Height="50">
<ComboBox.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Green"/>
</ComboBox.Resources>
</ComboBox>
</ComboBox>
</Grid>
</Window>
推荐答案
您的问题来自ButtonChrome的ToggleButton模板。从ToggleButton中删除它。
Your problem arises from ButtonChrome in the ToggleButton's template. Remove it from the ToggleButton.
ComboBox -> ToggleButton -> ButtonChrome
步骤：
表达式混合和编辑ComboBox的样式的副本，这将给你的样式的ComboBox +它的模板和所有它的TemplateParts，其中是有问题的ToggleButton。
1) Open Expression Blend and edit a copy of ComboBox's Style , This will give you the Style of the ComboBox + it's Template and all it's TemplateParts , Among them is the problematic ToggleButton.
2）找到ToggleButton以及名为ComboBoxReadonlyToggleButton的样式。
2) Locate the ToggleButton and it's Style called "ComboBoxReadonlyToggleButton" .
3）在ComboBoxReadonlyToggleButton中，将主题：ButtonChrome 替换为边框（如下面的第3代代码块所示）。
3) In "ComboBoxReadonlyToggleButton" replace the Themes:ButtonChrome with a Border (like shown in the 3'rd block of code below.)
ComboBox的默认模板（简化！）：
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid x:Name="MainGrid" SnapsToDevicePixels="true">
<Popup x:Name="PART_Popup">
.....
</Popup>
<ToggleButton Style="{StaticResource ComboBoxReadonlyToggleButton}"/>
<ContentPresenter ... />
</Grid>
</ControlTemplate>
切换按钮样式+模板>
The toggle button Style + Template (Simplified !).
<Style x:Key="ComboBoxReadonlyToggleButton" TargetType="{x:Type ToggleButton}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Themes:ButtonChrome x:Name="Chrome" ....>
<Grid>
<Path x:Name="Arrow" />
</Grid>
</Themes:ButtonChrome>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
您需要做的是覆盖默认的ComboBox模板，并通过替换ButtonChrome具有边框：
What you need to do is to override the default ComboBox template and edit the toggle button's style by replacing ButtonChrome with a Border :
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
<Grid>
<Path x:Name="Arrow" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
这篇关于C＃WPF ComboBox鼠标悬停在颜色上的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！