组合框以静态和动态数据 [英] Combobox with static and dynamic data

问题描述

我想创建一个绑定到一个动态资源，并具有保持在顶部有一个自定义的XAML pre指定的列表的组合框。我知道如何组合框绑定到一个动态资源，

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}" />

我知道如何插入静态项（见 WPF - 增加静态项目组合框）。

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

但我不知道如何在同一时间一举两得？

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

请注意：很显然，有很多不同的方式与自定义部件之类的要做到这一点，我只是觉得这应该是很容易莫名其妙地

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

的 CompositeCollection 是pretty爽这一点。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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