如何改变WPF组合框SelectedText背景颜色？ [英] How to change WPF ComboBox SelectedText BackGround Color?
本文介绍了如何改变WPF组合框SelectedText背景颜色？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在WPF的MVVM组合框和我风格的组合框的变化组合框的被弹框和文本框。
当我滚动组合框列表项thier的背景是粉红色是我chnaged。但是，从组合框列表中选择一个项目之后，在组合框中项目选定值具有蓝色背景。这是默认为在Windows窗体和WPF一个combobbox。
查看图片了解更多详情。
我怎样才能改变这种状况，在组合框中文本框控件selectedtext背景颜色
组合框有
IsEditable = TRUE 属性集
解决方案
＆LT; ResourceDictionary中的xmlns =http://schemas.microsoft.com/winfx/2006/xaml/$p $ psentation
的xmlns：X =http://schemas.microsoft.com/winfx/2006/xaml＆GT;
＆LT; ResourceDictionary.MergedDictionaries＆GT;
＆LT; ResourceDictionary中源=Brushes.xaml/＆GT;
＆LT; /ResourceDictionary.MergedDictionaries>
＆LT;的ControlTemplate的TargetType =切换按钮X：键=ComboBoxToggleButtonTemplate＆GT;
＆LT;电网＆GT;
＆LT; Grid.ColumnDefinitions＆GT;
＆LT; ColumnDefinition /＆GT;
＆LT; ColumnDefinition WIDTH =20/＆GT;
＆LT; /Grid.ColumnDefinitions>
＆LT; BORDER BorderBrush ={的StaticResource LightBrush}
CornerRadius =0
了borderThickness =1
名称=边境
背景={的StaticResource WhiteBrush}
Grid.ColumnSpan =2/＆GT;
＆LT; BORDER保证金=1
BorderBrush ={的StaticResource DarkBrush}
CornerRadius =0
了borderThickness =0
背景={的StaticResource WhiteBrush}
Grid.Column =0/＆GT;
＆LT;路径
数据=M0,0L4,4 8,0z
的HorizontalAlignment =中心
填写={DynamicResource DefaultBrush}
NAME =箭
VerticalAlignment =中心
宽度=8
Grid.Column =1/＆GT;
＆LT; /网格＆GT;
＆LT; ControlTemplate.Triggers＆GT;
＆LT;触发属性=ToggleButton.IsCheckedVALUE =真＆GT;
＆LT; setter属性=Panel.Background的TargetName =边界值={DynamicResource DefaultBrush}/＆GT;
＆LT; setter属性=Shape.Fill的TargetName =箭值={的StaticResource WhiteBrush}/＆GT;
＆LT; setter属性=Border.BorderBrush的TargetName =边界值={DynamicResource DefaultBrush}/＆GT;
＆LT; setter属性=Border.BorderThickness的TargetName =边界值=1,1,1,0＆GT;＆LT; /二传手＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=UIElement.IsEnabledVALUE =FALSE＆GT;
＆LT; setter属性=Panel.Background的TargetName =边界值={的StaticResource DisabledBackgroundBrush}/＆GT;
＆LT; setter属性=Border.BorderBrush的TargetName =边界值={的StaticResource DisabledBorderBrush}/＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE ={的StaticResource DisabledForegroundBrush}/＆GT;
＆LT; setter属性=Shape.Fill的TargetName =箭值=＃66FFFFFF/＆GT;
＆LT; /触发＆GT;
＆LT; /ControlTemplate.Triggers>
＆LT; /控件模板＆GT;
＆LT;的ControlTemplate的TargetType =文本框X：键=ComboBoxTextBoxTemplate＆GT;
＆LT; BORDER
NAME =PART_ContentHost背景={DynamicResource LightDefaultBrush}
可调焦=FALSE/＆GT;
＆LT; /控件模板＆GT;
＆LT;风格的TargetType ={X：类型ComboBoxItem}＆GT;
＆LT; setter属性=UIElement.SnapsToDevicePixelsVALUE =真/＆GT;
＆LT; setter属性=FrameworkElement.FocusVisualStyleVALUE ={X：空}/＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE ={的StaticResource ForeGroundBrush}/＆GT;
＆LT; setter属性=FrameworkElement.OverridesDefaultStyleVALUE =真/＆GT;
＆LT; setter属性=Control.Template＆GT;
＆LT; Setter.Value＆GT;
＆LT;的ControlTemplate的TargetType ={X：类型ComboBoxItem}＆GT;
＆LT; BORDER
名称=边境
SnapsToDevicePixels =真
填充=3,2,2,2＆GT;
＆LT;内容presenter
的ContentTemplate ={TemplateBinding ContentControl.ContentTemplate}
内容={TemplateBinding ContentControl.Content}/＆GT;
＆LT; /边框＆GT;
＆LT; ControlTemplate.Triggers＆GT;
＆LT;触发属性=ComboBoxItem.IsHighlightedVALUE =真＆GT;
＆LT; setter属性=Panel.Background的TargetName =边界值={DynamicResource DefaultBrush}/＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE =白＆GT;＆LT; /二传手＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=UIElement.IsEnabledVALUE =FALSE＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE ={的StaticResource DisabledForegroundBrush}/＆GT;
＆LT; /触发＆GT;
＆LT; /ControlTemplate.Triggers>
＆LT; /控件模板＆GT;
＆LT; /Setter.Value>
＆LT; /二传手＆GT;
＆LT; /样式和GT;
＆LT;风格的TargetType ={X：类型组合框}＆GT;
＆LT; setter属性=UIElement.SnapsToDevicePixelsVALUE =真/＆GT;
＆LT; setter属性=FrameworkElement.OverridesDefaultStyleVALUE =真/＆GT;
＆LT; setter属性=ScrollViewer.HorizontalScrollBarVisibilityVALUE =自动/＆GT;
＆LT; setter属性=ScrollViewer.VerticalScrollBarVisibilityVALUE =自动/＆GT;
＆LT; setter属性=ScrollViewer.CanContentScrollVALUE =真/＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE ={的StaticResource ForeGroundBrush}/＆GT;
＆LT; setter属性=FrameworkElement.FocusVisualStyleVALUE ={X：空}/＆GT;
＆LT; setter属性=高度值=25＆GT;＆LT; /二传手＆GT;
＆LT; setter属性=保证金VALUE =0,2,0,2＆GT;＆LT; /二传手＆GT;
＆LT; setter属性=Control.Template＆GT;
＆LT; Setter.Value＆GT;
＆LT;的ControlTemplate的TargetType =组合框＆GT;
＆LT;电网＆GT;
＆LT;切换按钮
ClickMode =preSS
NAME =切换按钮
=器isChecked{绑定路径= IsDropDownOpen，的RelativeSource = {的RelativeSource TemplatedParent}，模式=双向}
可调焦=FALSE
Grid.Column =2
模板={的StaticResource ComboBoxToggleButtonTemplate}/＆GT;
＆LT;内容presenter
保证金=3,3,23,3
的HorizontalAlignment =左
NAME =ContentSite
VerticalAlignment =中心
的ContentTemplate ={TemplateBinding ComboBox.SelectionBoxItemTemplate}
内容={TemplateBinding ComboBox.SelectionBoxItem}
IsHitTestVisible =FALSE/＆GT;
＆LT;文本框
保证金=3,1,1,1
能见度=隐藏
的HorizontalAlignment =左
NAME =PART_EditableTextBox
背景=透明
VerticalAlignment =中心
风格={X：空}
的IsReadOnly =FALSE
可调焦=FALSE
XML：空间=preserve
模板={的StaticResource ComboBoxTextBoxTemplate}/＆GT;
＆LT;弹出
放置=底
NAME =弹出
可调焦=FALSE
AllowsTransparency =真
ISOPEN ={TemplateBinding ComboBox.IsDropDownOpen}
PopupAnimation =幻灯片＆GT;
＆LT;电网
了minWidth ={TemplateBinding FrameworkElement.ActualWidth}
了maxHeight ={TemplateBinding ComboBox.MaxDropDownHeight}
NAME =下拉
SnapsToDevicePixels =真＆GT;
＆LT; BORDER
BorderBrush ={DynamicResource DefaultBrush}
了borderThickness =1,1,1,1
NAME =DropDownBorder
背景={的StaticResource WhiteBrush}/＆GT;
＆LT; ScrollViewer的保证金=1,0,1,0
SnapsToDevicePixels =真＆GT;
＆LT;项目presenter
KeyboardNavigation.DirectionalNavigation =含有/＆GT;
＆LT; /的ScrollViewer＆GT;
＆LT; /网格＆GT;
＆LT; /弹出＆GT;
＆LT; /网格＆GT;
＆LT; ControlTemplate.Triggers＆GT;
＆LT;触发属性=ItemsControl.HasItemsVALUE =FALSE＆GT;
＆LT; setter属性=FrameworkElement.MinHeight的TargetName =DropDownBorderVALUE =95/＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=UIElement.IsEnabledVALUE =FALSE＆GT;
＆LT; setter属性=TextElement.ForegroundVALUE ={的StaticResource DisabledForegroundBrush}/＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=ItemsControl.IsGroupingVALUE =真＆GT;
＆LT; setter属性=ScrollViewer.CanContentScrollVALUE =FALSE/＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=Window.AllowsTransparencySOURCENAME =弹出VALUE =真＆GT;
＆LT; setter属性=Border.CornerRadius的TargetName =DropDownBorder值=0/＆GT;
＆LT; setter属性=Border.BorderThickness的TargetName =DropDownBorderVALUE =1,0,1,1/＆GT;
＆LT; setter属性=FrameworkElement.Margin的TargetName =DropDownBorderVALUE =0,0,0,0/＆GT;
＆LT; /触发＆GT;
＆LT;触发属性=ComboBox.IsEditableVALUE =真＆GT;
＆LT; setter属性=KeyboardNavigation.IsTabStopVALUE =FALSE/＆GT;
＆LT; setter属性=UIElement.Visibility的TargetName =PART_EditableTextBoxVALUE =可见/＆GT;
＆LT; setter属性=UIElement.Visibility的TargetName =ContentSiteVALUE =隐藏/＆GT;
＆LT; /触发＆GT;
＆LT; /ControlTemplate.Triggers>
＆LT; /控件模板＆GT;
＆LT; /Setter.Value>
＆LT; /二传手＆GT;
＆LT; /样式和GT;
＆LT; / ResourceDictionary中＆GT;
I have a Combobox in WPF-MVVM and i have styled the combobox with changes in the popdown box and textbox of combobox.
When i scroll the combobox listitem thier background is pink is what i have chnaged. But after selecting a item from the combobox list, the selected value in combobox item has blue background. which is the default for a combobbox in both Windows Form and WPF.
See the image for more details.
How can i change that selectedtext background color in the combobox textbox control
The combobox has
IsEditable=True property set
解决方案
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Brushes.xaml"/>
</ResourceDictionary.MergedDictionaries>
<ControlTemplate TargetType="ToggleButton" x:Key="ComboBoxToggleButtonTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border BorderBrush="{StaticResource LightBrush}"
CornerRadius="0"
BorderThickness="1"
Name="Border"
Background="{StaticResource WhiteBrush}"
Grid.ColumnSpan="2" />
<Border Margin="1"
BorderBrush="{StaticResource DarkBrush}"
CornerRadius="0"
BorderThickness="0"
Background="{StaticResource WhiteBrush}"
Grid.Column="0" />
<Path
Data="M0,0L4,4 8,0z"
HorizontalAlignment="Center"
Fill="{DynamicResource DefaultBrush}"
Name="Arrow"
VerticalAlignment="Center"
Width="8"
Grid.Column="1" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="{DynamicResource DefaultBrush}"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="{StaticResource WhiteBrush}"/>
<Setter Property="Border.BorderBrush" TargetName="Border" Value="{DynamicResource DefaultBrush}"/>
<Setter Property="Border.BorderThickness" TargetName="Border" Value="1,1,1,0"></Setter>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="Panel.Background" TargetName="Border" Value="{StaticResource DisabledBackgroundBrush}"/>
<Setter Property="Border.BorderBrush" TargetName="Border" Value="{StaticResource DisabledBorderBrush}"/>
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
<Setter Property="Shape.Fill" TargetName="Arrow" Value="#66FFFFFF"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate TargetType="TextBox" x:Key="ComboBoxTextBoxTemplate">
<Border
Name="PART_ContentHost" Background="{DynamicResource LightDefaultBrush}"
Focusable="False" />
</ControlTemplate>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="UIElement.SnapsToDevicePixels" Value="True"/>
<Setter Property="FrameworkElement.FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="TextElement.Foreground" Value="{StaticResource ForeGroundBrush}"/>
<Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True"/>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border
Name="Border"
SnapsToDevicePixels="True"
Padding="3,2,2,2">
<ContentPresenter
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
Content="{TemplateBinding ContentControl.Content}" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ComboBoxItem.IsHighlighted" Value="True">
<Setter Property="Panel.Background" TargetName="Border" Value="{DynamicResource DefaultBrush}"/>
<Setter Property="TextElement.Foreground" Value="White"></Setter>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="UIElement.SnapsToDevicePixels" Value="True"/>
<Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="True"/>
<Setter Property="TextElement.Foreground" Value="{StaticResource ForeGroundBrush}"/>
<Setter Property="FrameworkElement.FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="Height" Value="25"></Setter>
<Setter Property="Margin" Value="0,2,0,2"></Setter>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
ClickMode="Press"
Name="ToggleButton"
IsChecked="{Binding Path=IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Focusable="False"
Grid.Column="2"
Template="{StaticResource ComboBoxToggleButtonTemplate}"/>
<ContentPresenter
Margin="3,3,23,3"
HorizontalAlignment="Left"
Name="ContentSite"
VerticalAlignment="Center"
ContentTemplate="{TemplateBinding ComboBox.SelectionBoxItemTemplate}"
Content="{TemplateBinding ComboBox.SelectionBoxItem}"
IsHitTestVisible="False" />
<TextBox
Margin="3,1,1,1"
Visibility="Hidden"
HorizontalAlignment="Left"
Name="PART_EditableTextBox"
Background="Transparent"
VerticalAlignment="Center"
Style="{x:Null}"
IsReadOnly="False"
Focusable="False"
xml:space="preserve"
Template="{StaticResource ComboBoxTextBoxTemplate}"/>
<Popup
Placement="Bottom"
Name="Popup"
Focusable="False"
AllowsTransparency="True"
IsOpen="{TemplateBinding ComboBox.IsDropDownOpen}"
PopupAnimation="Slide">
<Grid
MinWidth="{TemplateBinding FrameworkElement.ActualWidth}"
MaxHeight="{TemplateBinding ComboBox.MaxDropDownHeight}"
Name="DropDown"
SnapsToDevicePixels="True">
<Border
BorderBrush="{DynamicResource DefaultBrush}"
BorderThickness="1,1,1,1"
Name="DropDownBorder"
Background="{StaticResource WhiteBrush}"/>
<ScrollViewer Margin="1,0,1,0"
SnapsToDevicePixels="True">
<ItemsPresenter
KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ItemsControl.HasItems" Value="False">
<Setter Property="FrameworkElement.MinHeight" TargetName="DropDownBorder" Value="95"/>
</Trigger>
<Trigger Property="UIElement.IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
<Trigger Property="ItemsControl.IsGrouping" Value="True">
<Setter Property="ScrollViewer.CanContentScroll" Value="False"/>
</Trigger>
<Trigger Property="Window.AllowsTransparency" SourceName="Popup" Value="True">
<Setter Property="Border.CornerRadius" TargetName="DropDownBorder" Value="0"/>
<Setter Property="Border.BorderThickness" TargetName="DropDownBorder" Value="1,0,1,1"/>
<Setter Property="FrameworkElement.Margin" TargetName="DropDownBorder" Value="0,0,0,0"/>
</Trigger>
<Trigger Property="ComboBox.IsEditable" Value="True">
<Setter Property="KeyboardNavigation.IsTabStop" Value="False"/>
<Setter Property="UIElement.Visibility" TargetName="PART_EditableTextBox" Value="Visible"/>
<Setter Property="UIElement.Visibility" TargetName="ContentSite" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
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