如何向数据绑定的 WPF 组合框添加分隔符？
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How to add a separator to a WPF combobox that is databound?
提问by Theodosius Von Richthofen
Is there any way I can add a seprator into a WPF combobox that is databound? ie in my xaml, the combobox's ItemsSource="{Binding TheList}". The list is an observable collection of objects, one of i want separated from the rest. This list is also generated from sql, so its not hard-coded or anything. I wouldn't want the seaprator to be selectable, either. Thanks!
有什么方法可以将分隔符添加到数据绑定的 WPF 组合框中？即在我的 xaml 中，组合框的 ItemsSource="{Binding TheList}"。该列表是一个可观察的对象集合，我想将其中一个与其他对象分开。这个列表也是从 sql 生成的，所以它不是硬编码或任何东西。我也不希望分离器是可选的。谢谢！
回答by bouvierr
回答by rodolfoprado
you need to use a ComboBox.ItemTemplate to draw your itens
您需要使用 ComboBox.ItemTemplate 来绘制您的项目
http://www.silverlightshow.net/items/Silverlight-ComboBox.aspx
http://www.silverlightshow.net/items/Silverlight-ComboBox.aspx
回答by nrod
Although my ComboxBox(at the moment) is not DataBoundI achieved the concept of a separator by adding a bottom border to an element. In this example two lines before and two lines after the separator.
虽然我的ComboxBox（目前）不是DataBound我通过向元素添加底部边框来实现分隔符的概念。在此示例中，分隔符前两行和分隔符后两行。
<ComboBox x:Name="Cbx" SelectionChanged="Cbx_SelectionChanged">
<ComboBoxItem Content="select one..." Foreground="DarkGray" IsSelected="True" /
<ComboBoxItem Content="ABC" />
<ComboBoxItem Content="DEF" />
<ComboBoxItem Content="GHI" BorderBrush="Black" BorderThickness="0,0,0,2" />
<ComboBoxItem Content="KLM" />
<ComboBoxItem Content="NOP" />
</ComboBox>
回答by TorATB
If you want to do the same in C# code:
如果你想在 C# 代码中做同样的事情：
Cbx.Items.Add("ABC");
Cbx.Items.Add("DEF");
ComboBoxItem item = new ComboBoxItem();
item.Content = "GHI";
item.BorderBrush = Brushes.Black;
item.BorderThickness = new Thickness(0, 0, 0, 2);
Cbx.Items.Add(item);
Cbx.Items.Add("KLM");
Cbx.Items.Add("NOP");
