带有静态和动态数据的组合框 [英] Combobox with static and dynamic data

问题描述

我想创建一个绑定到动态资源的组合框，并有一个位于顶部的自定义 xaml 预先指定的列表.我知道如何将组合框绑定到动态资源，

I would like to create a combobox that binds to a dynamic resource and has a custom xaml pre-specified list that stays at the top. I know how to bind a combobox to a dynamic resource,

<ComboBox Name="comboBox1" Width="Auto" ItemsSource="{Binding}" />

而且我知道如何插入静态项目(参见 WPF - 添加静态项目到组合框).

and I know how to insert static items (see WPF - add static items to a combo box ).

<ComboBox Text="Is not open"> 
  <ComboBoxItem Name="cbi1">Item1</ComboBoxItem>
  <ComboBoxItem Name="cbi2">Item2</ComboBoxItem>     
  <ComboBoxItem Name="cbi3">Item3</ComboBoxItem> 
</ComboBox> 

但我不知道如何同时进行?

but I don't know how to do both at the same time?

注意:显然，使用自定义小部件等有很多不同的方法可以做到这一点，我只是觉得这应该很容易.

Note: obviously, there are plenty of different ways to do this with custom widgets and the like, I just feel this should be quite easy somehow.

推荐答案

CompositeCollection 对此非常酷.像这样:

CompositeCollection is pretty cool for this. Something like so:

<ComboBox>
    <ComboBox.ItemsSource>
        <CompositeCollection>
            <CollectionContainer Collection="{Binding Source={...whatever...}" />
            <ComboBoxItem Name="cbi1">Item1</ComboBoxItem>
            <ComboBoxItem Name="cbi2">Item2</ComboBoxItem>
            <ComboBoxItem Name="cbi3">Item3</ComboBoxItem>
        </CompositeCollection>
    </ComboBox.ItemsSource>
</ComboBox>

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