如何在WPF DataGrid中设置comboBox的风格？ [英] how to set a comboBox's style inside a WPF DataGrid?

问题描述

我有一个DataGrid包含一些DataGridComboBoxColumns。

我希望这些列中的组合框具有一定的应用风格。

所以我尝试将以下内容添加到我的DataGrid的资源：

 < Style x：Key ={ x：Type ComboBox}TargetType ={x：Type ComboBox}> 
< Setter Property =SnapsToDevicePixelsValue =true/> 
< Setter Property =OverridesDefaultStyleValue =true/> 
< Setter Property =ScrollViewer.Horizo​​ntalScrollBarVisibilityValue =Auto/> 
< Setter Property =ScrollViewer.VerticalScrollBarVisibilityValue =Auto/> 
< Setter Property =ScrollViewer.CanContentScrollValue =true/> 
 
< Setter Property =BackgroundValue ={StaticResource DefaultBackgroundBrush}/> 
< Setter Property =BorderBrushValue ={StaticResource DefaultBorderBrush}/> 
< Setter Property =ForegroundValue ={StaticResource DefaultForegroundBrush}/> 
< Setter Property =FontFamilyValue ={StaticResource DefaultFontFamily}/> 
< Setter Property =FontSizeValue ={StaticResource DefaultFontSize}/> 
< Setter Property =PaddingValue =2/> 
< / Style> 
  

根本不做任何事。

令人惊讶的是，如果我添加：

 < Style x：Key ={x：Type ComboBoxItem}TargetType = ComboBoxItem> 
< Setter Property =SnapsToDevicePixelsValue =true/> 
< Setter Property =OverridesDefaultStyleValue =true/> 
< Setter Property =ForegroundValue =Red/> 
< / Style> 
  

同一组合框内的comboBoxItem将正确获取红色前景色。

所以基本上，我无法设置我的dataGrid中的comboBoxes的样式，但是我可以在同一个comboBox中设置comboBoxItem的样式。

相当惊讶...

有没有人知道这里发生了什么，以及我如何解决我的问题？

谢谢

解决方案

究竟该做什么？ x：Key ={x：Type ComboBox}

如果要将样式应用于子树中的所有控件。

编辑：要将样式应用于组合框，您必须调整属性 DataGridComboBoxCotlumn.ElementStyle 和 DataGridComboBoxColumn.EditingElementStyle 。

I have a DataGrid containing some DataGridComboBoxColumns.

I would like the comboBoxes inside those columns to have a certain style applied.

so I tried adding the following to my DataGrid's Resources:

<Style x:Key="{x:Type ComboBox}" TargetType="{x:Type 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="Background" Value="{StaticResource DefaultBackgroundBrush}"/>
    <Setter Property="BorderBrush" Value="{StaticResource DefaultBorderBrush}"/>
    <Setter Property="Foreground" Value="{StaticResource DefaultForegroundBrush}"/>
    <Setter Property="FontFamily" Value="{StaticResource DefaultFontFamily}"/>
    <Setter Property="FontSize" Value="{StaticResource DefaultFontSize}"/>
    <Setter Property="Padding" Value="2"/>
</Style>

does not do anything at all.

amazingly enough, if I add:

<Style x:Key="{x:Type ComboBoxItem}" TargetType="ComboBoxItem">
    <Setter Property="SnapsToDevicePixels" Value="true"/>
    <Setter Property="OverridesDefaultStyle" Value="true"/>
    <Setter Property="Foreground" Value="Red"/>
</Style>

the comboBoxItems inside the same comboBoxes will get the red foreground color Correctly.

so basically, I cannot set the style of the comboBoxes inside my dataGrid, but I can set the style of the comboBoxItems inside those same comboBoxes.

quite surprising...

does anyone have a clue about what's going on here and how I can solve my problem?

thanks

解决方案

What exactly is this supposed to do? x:Key="{x:Type ComboBox}"

You should not assign keys if you want styles to be applied to all controls in the subtree.

Edit: To apply the styles to the ComboBoxes you must adjust the properties DataGridComboBoxCotlumn.ElementStyle and DataGridComboBoxColumn.EditingElementStyle.

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