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如何将枚举绑定到WPF中的组合框控件?

更新时间:2022-10-21 11:07:19

您可以通过将代码放在Window Loaded 事件处理程序,例如:

  yourComboBox.ItemsSource = Enum.GetValues(typeof(EffectStyle ))。Cast< EffectStyle>(); 

如果需要在XAML中绑定,需要使用 ObjectDataProvider 创建可用作绑定源的对象:

 < Window x:Class =YourNamespace.MainWindow
xmlns =http://schemas.microsoft.com/winfx/2006/xaml/presentation
xmlns:x =http://schemas.microsoft.com/winfx/2006/xaml
xmlns:System =clr-namespace:System; assembly = mscorlib
xmlns:StyleAlias =clr-namespace:Motion.VideoEffects>
< Window.Resources>
< ObjectDataProvider x:Key =dataFromEnumMethodName =GetValues
ObjectType ={x:Type System:Enum}>
< ObjectDataProvider.MethodParameters>
< x:Type TypeName =StyleAlias:EffectStyle/>
< /ObjectDataProvider.MethodParameters>
< / ObjectDataProvider>
< /Window.Resources>
< Grid>
< ComboBox ItemsSource ={Binding Source = {StaticResource dataFromEnum}}
SelectedItem ={Binding Path = CurrentEffectStyle}/>
< / Grid>
< / Window>

提请注意下一个代码:

  xmlns:System =clr-namespace:System; assembly = mscorlib
xmlns:StyleAlias =clr-namespace:Motion.VideoEffects

指导如何映射您可以阅读的命名空间和程序集 MSDN


I am trying to find a simple example where the enums are shown as is. All examples I have seen tries to add nice looking display strings but I don't want that complexity.

Basically I have a class that holds all the properties that I bind, by first setting the DataContext to this class, and then specifying the binding like this in the xaml file:

<ComboBox ItemsSource="{Binding Path=EffectStyle}"/>

But this doesn't show the enum values in the ComboBox as items.

You can do it from code by placing the following code in Window Loaded event handler, for example:

yourComboBox.ItemsSource = Enum.GetValues(typeof(EffectStyle)).Cast<EffectStyle>();

If you need to bind it in XAML you need to use ObjectDataProvider to create object available as binding source:

<Window x:Class="YourNamespace.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:System="clr-namespace:System;assembly=mscorlib"
        xmlns:StyleAlias="clr-namespace:Motion.VideoEffects">
    <Window.Resources>
        <ObjectDataProvider x:Key="dataFromEnum" MethodName="GetValues"
                            ObjectType="{x:Type System:Enum}">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="StyleAlias:EffectStyle"/>
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Window.Resources>
    <Grid>
        <ComboBox ItemsSource="{Binding Source={StaticResource dataFromEnum}}"
                  SelectedItem="{Binding Path=CurrentEffectStyle}" />
    </Grid>
</Window>

Draw attention on the next code:

xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:StyleAlias="clr-namespace:Motion.VideoEffects"

Guide how to map namespace and assembly you can read on MSDN.