我遇到ComboBox
的问题。我想通过改变它的风格来改变它的外观,但我有一些外观问题,我找不到它们在哪里。
我的ComboBox
有这样的表现:
我有两个问题:
我不知道在哪里可以更改可扩展菜单的前景......无论我在哪里更改它,它都会保持白色!!
当我选择一个选项时,Text
的{{1}}会出现两次,一个是深蓝色,一个是白色,您可以在图像上欣赏。我不知道如何改变它......
我的风格如下:
ComboBox
如果有人可以帮忙解决这个问题,我们将非常感激!
修改
我可以通过改变这个来解决写两次值的问题:
<!-- All ComboBox styles -->
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="ToggleButton">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border
x:Name="Border"
Grid.ColumnSpan="2"
CornerRadius="5"
Background="{StaticResource DarkGradient}"
BorderBrush="{StaticResource SolidBorderBrush}"
BorderThickness="1" />
<Border
Grid.Column="0"
CornerRadius="5,0,0,5"
Margin="1"
Background="{StaticResource TextBoxBrush}"
BorderBrush="{StaticResource SolidBorderBrush}"
BorderThickness="0,0,1,0" />
<Path
x:Name="Arrow"
Grid.Column="1"
Fill="{StaticResource TextBoxBrush}"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Data="M 0 0 L 4 4 L 8 0 Z"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="LightGray" />
<Setter TargetName="Border" Property="BorderBrush" Value="Gray" />
<Setter Property="Foreground" Value="DarkGray"/>
<Setter TargetName="Arrow" Property="Fill" Value="DarkGray" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<!-- ComboBox TextBox -->
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="TextBox">
<Border x:Name="PART_ContentHost" Focusable="False" Background="{TemplateBinding Background}" />
</ControlTemplate>
<!-- ComboBox style -->
<Style x:Key="{x:Type ComboBox}" TargetType="ComboBox">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="MinWidth" Value="120"/>
<Setter Property="MinHeight" Value="20"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
Template="{StaticResource ComboBoxToggleButton}"
Grid.Column="2"
Focusable="false"
IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}"
ClickMode="Press">
</ToggleButton>
<ContentPresenter
Name="ContentSite"
IsHitTestVisible="False"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
Margin="3,3,23,3"
VerticalAlignment="Center"
HorizontalAlignment="Left" />
<TextBox x:Name="PART_EditableTextBox"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Text="{TemplateBinding Text}"
Margin="3,3,23,3"
Focusable="True"
Background="Transparent"
Visibility="Visible"
Foreground="DarkBlue"
IsReadOnly="{TemplateBinding IsReadOnly}"/>
<Popup
Name="Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border
x:Name="DropDownBorder"
Background="{StaticResource TextBoxBrush}"
BorderThickness="1"
BorderBrush="{StaticResource SolidBorderBrush}"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="LightGray"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="0,0,4,4"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0"/>
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter TargetName="PART_EditableTextBox" Property="Visibility" Value="Visible"/>
<Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
</Style.Triggers>
</Style>
然后添加到Text="{TemplateBinding SelectionBoxItem}"
选择语句,然后默认设置它,但我仍然有问题无法更改组合的ItemSource
...
EDIT2:
我发现了一件事:当我创建列表时,我这样做:
Foreground
listPrecissions = new List<Precisions>()
是我用两个字符串创建的类。如果我用直接字符串创建它:
Precisions
并添加项目,它有一个黑色的前景。但不知道为什么......
答案 0 :(得分:2)
您的问题缺少以下格式TextBoxBrush
,SolidBorderBrush
和DarkGradient
。
我不知道在哪里可以更改可扩展菜单的前景......无论我在哪里更改它,它都会保持白色!!
在ComboBox上设置Foreground
属性似乎为我改变了(应用了你的样式)。
当我选择一个选项时,ComboBox的文本会出现两次,一个是深蓝色,另一个是白色,您可以在图像上欣赏。我不知道如何改变它......
<ContentPresenter Name="ContentSite"
和<TextBox x:Name="PART_EditableTextBox"
负责显示两种不同情况的当前项目。第一个是正常的,第二个是ComboBox
被标记为可编辑的(IsEditable="True"
)。在您的风格中,PART_EditableTextBox
的默认值是可见的,因此只需将其设置为隐藏。
<TextBox x:Name="PART_EditableTextBox"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Text="{TemplateBinding Text}"
Margin="3,3,23,3"
Focusable="True"
Background="Transparent"
Visibility="Hidden"
Foreground="DarkBlue"
IsReadOnly="{TemplateBinding IsReadOnly}"/>