`ListView` `Mouse Over` define as `transparent` but shows 2 colors

问题

My ListView Mouse Over define as transparent but the result is half transparent:

Same with Selected:

Define Blue but has 2 colors.

Why is that ?

• Edit

      <ListView Name="llistview" Background="Transparent" BorderThickness="0,1,0,0" 
            ItemsSource="{Binding collection}" MouseDoubleClick="llistview_MouseDoubleClick" 
            MouseLeftButtonDown="llistview_MouseLeftButtonDown" Margin="0,176,0,166" BorderBrush="Gainsboro" 
                ScrollViewer.HorizontalScrollBarVisibility="Disabled">
          <ListView.ItemContainerStyle>
              <Style TargetType="{x:Type ListViewItem}">
                  <Setter Property="Foreground" Value="Gainsboro"/>
                  <Setter Property="SnapsToDevicePixels" Value="True"/>
                  <Setter Property="Padding" Value="4,1"/>
                  <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
                  <Setter Property="Background" Value="Transparent"/>
                  <Setter Property="BorderBrush" Value="Transparent"/>
                  <Setter Property="BorderThickness" Value="1"/>
                  <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
                  <Setter Property="Height" Value="20" />
                  <Style.Triggers>
                      <MultiTrigger>
                          <MultiTrigger.Conditions>
                              <Condition Property="IsMouseOver" Value="True"/>
                          </MultiTrigger.Conditions>
                          <Setter Property="Foreground" Value="White"></Setter>
                          <Setter Property="Background" Value="Transparent"/>
                          <Setter Property="BorderBrush" Value="White"/>
                      </MultiTrigger>
                      <MultiTrigger>
                          <MultiTrigger.Conditions>
                              <Condition Property="Selector.IsSelectionActive" Value="False"/>
                              <Condition Property="IsSelected" Value="True"/>
                          </MultiTrigger.Conditions>
                          <Setter Property="Background" Value="#FF15669E"/>
                          <Setter Property="Foreground" Value="White"/>
                          <Setter Property="BorderBrush" Value="Transparent"/>
                          <Setter Property="BorderThickness" Value="0"/>
                      </MultiTrigger>
                      <MultiTrigger>
                          <MultiTrigger.Conditions>
                              <Condition Property="Selector.IsSelectionActive" Value="True"/>
                              <Condition Property="IsSelected" Value="True"/>
                          </MultiTrigger.Conditions>
                          <Setter Property="Background" Value="#FF15669E"/>
                          <Setter Property="Foreground" Value="White"/>
                          <Setter Property="BorderBrush" Value="Transparent"/>
                          <Setter Property="BorderThickness" Value="1"/>
                      </MultiTrigger>
                      <Trigger Property="IsEnabled" Value="False">
                          <Setter Property="TextElement.Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                      </Trigger>
                  </Style.Triggers>
              </Style>
          </ListView.ItemContainerStyle>
          <ListView.Resources>
              <DataTemplate x:Key="MyDataTemplate">
                  <Grid Margin="-6">
                      <ProgressBar Name="progressBarColumn" Maximum="100" Value="{Binding Progress, UpdateSourceTrigger=PropertyChanged}" 
                               Width="{Binding Path=Width, ElementName=ProgressCell}" 
                               Height="18" Margin="0" Background="Gainsboro" Style="{StaticResource CustomProgressBar}" />
                      <TextBlock Text="{Binding Path=Value, ElementName=progressBarColumn, StringFormat={}{0}%}" VerticalAlignment="Center"
                             HorizontalAlignment="Center" FontSize="11" Foreground="White" />
                  </Grid>
              </DataTemplate>
              <DataTemplate x:Key="MyDataTemplate2">
                  <Grid Margin="-6" >
                      <Slider Name="sliderColumn" HorizontalAlignment="Left" VerticalAlignment="Center" TickPlacement="None"
                              Minimum="0" Maximum="50" Value="1" Style="{StaticResource SliderStyle}" Width="80"
                              TickFrequency="1" IsSnapToTickEnabled="True"/>
                          <TextBlock Text="{Binding Path=Value, ElementName=sliderColumn, StringFormat={}x{0}}" FontSize="11" Foreground="White" 
                                     VerticalAlignment="Center" HorizontalAlignment="Right"/>
                  </Grid>
              </DataTemplate>
              <ControlTemplate x:Key="ProgressBarTemplate">
                  <Label  HorizontalAlignment="Center" VerticalAlignment="Center" />
              </ControlTemplate>
              <Style TargetType="{x:Type TextBlock}">
                  <Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self}, Path=Text }"></Setter>
              </Style>
          </ListView.Resources>
          <ListView.View>
              <GridView ColumnHeaderContainerStyle="{StaticResource ListViewHeaderStyle}">
                  <GridViewColumn Width="495"  DisplayMemberBinding="{Binding File}" />
  
                  <GridViewColumn x:Name="SpeedCell"  Width="100"  CellTemplate="{StaticResource MyDataTemplate2}" />
  
                  <GridViewColumn Width="100" DisplayMemberBinding="{Binding Duration}" />
  
                  <GridViewColumn Width="100" DisplayMemberBinding="{Binding Packets, StringFormat={}{0:#,0}}" />
  
                  <GridViewColumn Width="100"  DisplayMemberBinding="{Binding PacketsSent, StringFormat={}{0:#,0}}" />
  
                  <GridViewColumn x:Name="ProgressCell"  Width="60" Header="Progress" CellTemplate="{StaticResource MyDataTemplate}" />
              </GridView>
          </ListView.View>
          <ListView.ContextMenu>
              <ContextMenu>
                  <MenuItem Header="Open Capture" FontSize="12" FontFamily="Microsoft Sans Serif"
                            Click="MenuItem_Click" VerticalAlignment="Center" Height="20">
                      <MenuItem.Icon>
                          <Image Height="18" Width="18" VerticalAlignment="Center" />
                          <!--   <Source="C:\Users\rsteinbe\Dropbox\PacketPlayer\PacketPlayer\resources\wireshark.ico" />-->
                      </MenuItem.Icon>
                  </MenuItem>
              </ContextMenu>
          </ListView.ContextMenu>
      </ListView>
  

回答1:

This ain't gonna be pretty. That extra color is there thanks to an "UpperHighlight" Rectangle that is part of the default ListViewItem Template, and it is not accessible from outside. So you're only left with overwriting the whole Template.

First of all, add this to your Resources:

    <Style x:Key="ListViewItemFocusVisual">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Rectangle RadiusY="2" RadiusX="2" Stroke="#8E6EA6F5" StrokeThickness="1"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <LinearGradientBrush x:Key="ListItemHoverFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#FFF1FBFF" Offset="0"/>
        <GradientStop Color="#FFD5F1FE" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="ListItemSelectedFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#FFD9F4FF" Offset="0"/>
        <GradientStop Color="#FF9BDDFB" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="ListItemSelectedInactiveFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#FFEEEDED" Offset="0"/>
        <GradientStop Color="#FFDDDDDD" Offset="1"/>
    </LinearGradientBrush>
    <LinearGradientBrush x:Key="ListItemSelectedHoverFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#FFEAF9FF" Offset="0"/>
        <GradientStop Color="#FFC9EDFD" Offset="1"/>
    </LinearGradientBrush>

And then add this to your ListViewItem Style:

<ListView.ItemContainerStyle>
    <Style TargetType="{x:Type ListViewItem}">
        <!-- ... Your other Setters -->
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ListViewItem}">
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="2" SnapsToDevicePixels="true">
                        <Border x:Name="InnerBorder" BorderThickness="1" CornerRadius="1">
                            <Grid>
                                <Grid.RowDefinitions>
                                    <RowDefinition MaxHeight="11"/>
                                    <RowDefinition/>
                                </Grid.RowDefinitions>
                                <!--<Rectangle x:Name="UpperHighlight" Fill="#75FFFFFF" Visibility="Collapsed"/>-->
                                <GridViewRowPresenter Grid.RowSpan="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                            </Grid>
                        </Border>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter Property="Background" Value="{StaticResource ListItemHoverFill}"/>
                            <Setter Property="BorderBrush" Value="#FFCCF0FF"/>
                            <!--<Setter Property="Visibility" TargetName="UpperHighlight" Value="Visible"/>-->
                        </Trigger>
                        <Trigger Property="IsSelected" Value="true">
                            <Setter Property="Background" Value="{StaticResource ListItemSelectedFill}"/>
                            <Setter Property="BorderBrush" Value="#FF98DDFB"/>
                            <Setter Property="BorderBrush" TargetName="InnerBorder" Value="#80FFFFFF"/>
                            <!--<Setter Property="Visibility" TargetName="UpperHighlight" Value="Visible"/>
                            <Setter Property="Fill" TargetName="UpperHighlight" Value="#40FFFFFF"/>-->
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="Selector.IsSelectionActive" Value="false"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" Value="{StaticResource ListItemSelectedInactiveFill}"/>
                            <Setter Property="BorderBrush" Value="#FFCFCFCF"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="true"/>
                                <Condition Property="IsMouseOver" Value="true"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" Value="{StaticResource ListItemSelectedHoverFill}"/>
                            <Setter Property="BorderBrush" Value="#FF98DDFB"/>
                        </MultiTrigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <!-- ... Your Triggers -->
        </Style.Triggers>
    </Style>
</ListView.ItemContainerStyle>

来源：https://stackoverflow.com/questions/31184927/listview-mouse-over-define-as-transparent-but-shows-2-colors