更改WPF组合框的边框颜色 [英] Changing the border colors of a WPF combobox

问题描述

所以我试图改变表达式混合中我的组合框的样式。

So I am trying to change the style of my combobox in Expression blend.

我做的是创建一个组合框，并且右键单击>编辑模板>编辑副本

What I did was create a combobox, and went RightClick > Edit Template > Edit a Copy

我可以更改组合框的颜色，但背景 ，以及组合框的边框。这是一个屏幕，您可以看到：

And I can change the colors of the combobox, except there is a white border in between the background of the combobox, and the border of the combobox. Here is a screen so you can see:

正如你所看到的，蓝色和红色之间有一个边界。据我所知，改变combobox颜色的代码如下：

As you can see, there is a while border between the blue and red. As far as I can tell, the code to change the color of combobox is the following:

<ToggleButton Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, 
RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource 
ComboBoxReadonlyToggleButton}" BorderBrush="Red" Background="Blue"/>

但无论如何，总有一个白色边框。如何摆脱它？

But no matter what, there is always a white border. How do i get rid of it?

推荐答案

我知道这是一个老问题，这个问题，这是我发现的第一件事情之一。

I know this is an old question, and it's specific to blend but when googling for this problem, this is one of the first things I found.

一个非常简单的例子来解决这个问题，比第一个提到的第一个问题复杂一点，就是设置Style属性。 （不确定这适用于混合，因为我不使用混合，但对于简单的wpf在visual studio，这样的工作）

A really simple example of a way to fix this, that is a little less complex than the first answer mentioned is to set "Style" Properties. (Not sure this applies to blend since I don't use blend, but for simple wpf in visual studio, this works)

例如，下面的代码创建一个窗口

For example, this code below creates a window just like the one mentioned in the question, but with the white lines (in the drop down items) editable.

<ComboBox Background="Blue" BorderBrush="Red">
    <ComboBox.ItemContainerStyle>
        <!-- Without this style section, there are white lines around the borders.  Even if you set these properties in the comboBoxItem areas -->
        <Style TargetType="ComboBoxItem">
            <Setter Property="Background" Value="Green"/>
            <Setter Property="BorderBrush" Value="Purple"></Setter>
        </Style>
     </ComboBox.ItemContainerStyle>
     <ComboBoxItem MouseMove="schedule" Name="cbi1">schedule</ComboBoxItem>
</ComboBox>

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