我使用與風格的自定義組合框的下拉菜單(彈出),我想通過coading動態地設置彈出窗口的寬度,以便自動調整彈出窗口的寬度動態寬度綁定到自定義組合框中使用
所以我想改變像動態第二圖像彈出(任何可能thesize組合框的) 我使用的樣式如下
<Style x:Key="ComboBoxStyle" TargetType="{x:Type ComboBox}">
<Setter Property="Foreground" Value="#666666"/>
<Setter Property="FontFamily" Value="Arial"/>
<Setter Property="FontSize" Value="13"/>
<Setter Property="Height" Value="28"/>
<Setter Property="BorderThickness" Value="1.5"/>
<Setter Property="Padding" Value="4,3"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid>
<Popup Margin="1" x:Name="PART_Popup" AllowsTransparency="true" IsOpen="{Binding Path=IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Bottom" PopupAnimation="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Grid.ColumnSpan="2" Width="{Binding ActualWidth,RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Grid}}">
<Border Name="DropDownBorder" Width="Auto" Height="Auto" BorderThickness="1,0,1,1" CornerRadius="0,0,4,4" BorderBrush="#FFbbbbbb">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="White" Offset="0" />
<GradientStop Color="#FFE9E9E9" Offset="1" />
</LinearGradientBrush>
</Border.Background>
<ScrollViewer CanContentScroll="true">
<ItemsPresenter />
</ScrollViewer>
</Border>
</Popup>
<ToggleButton Style="{StaticResource cmbToggle}" Grid.ColumnSpan="2" IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"/>
<ContentPresenter HorizontalAlignment="Left" Margin="5,0,0,0" VerticalAlignment="Center" IsHitTestVisible="false" Content="{TemplateBinding SelectionBoxItem}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="cmbToggle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Name="cmbBorder" CornerRadius="3" BorderBrush="#FFaaaaaa" BorderThickness="1.5">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="White" Offset="0" />
<GradientStop Color="#FFE9E9E9" Offset="1" />
</LinearGradientBrush>
</Border.Background>
<Border BorderBrush="#FFaaaaaa" BorderThickness="1,0,0,0" Width="20" HorizontalAlignment="Right">
<Polygon Name="pol" Fill="#FF787878" Points="4,9 8,14 12,9" Stroke="#FF787878" StrokeThickness="0" Margin="1 1 0 0">
</Polygon>
</Border>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="CornerRadius" TargetName="cmbBorder" Value="4,4,0,0"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
所以我的想法是動態地改變Popup的寬度(Combobox寬度 - togglebutton寬度=彈出寬度)。我已經在App.xaml中編寫了樣式 如何做到這一點,請幫助我。提前致謝。
爲什麼不檢查默認組合框的樣式並查看MS是如何工作的?據我記得你想要的是組合框的默認行爲。 – Terry
@Derry不,這不是默認行爲。至少在Windows-8中不是這樣。有點高興這不是默認行爲,因爲使用這個所需的'Style',每次使用「箭頭」切換'ComboBox'時,您都需要將鼠標移動到不僅僅是向下,而且還需要做出選擇只是怪異的國際海事組織。 – Viv