如何绑定枚举在WPF组合框控件? [英] How to bind an enum to a combobox control in WPF?
问题描述
我试图找到一个简单的例子,其中枚举显示为是。我见过的所有示例尝试添加漂亮的显示字符串,但我不希望出现这种情况的复杂性。
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.
基本上,我有一个容纳了我绑定的属性,首先设置的DataContext这个类,然后指定这样的XAML文件中的绑定类:
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}"/>
但是,这并不在显示枚举值组合框
的项目。
推荐答案
您可以从code。通过将下面的code在窗口做加载
事件处理程序,例如:
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>();
如果你需要将它绑定在XAML中,你需要使用的ObjectDataProvider
以创建可作为绑定源对象:
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>
提请注意随后code:
Draw attention on the next code:
xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:StyleAlias="clr-namespace:Motion.VideoEffects"
指南如何映射命名空间和装配可以阅读 MSDN 。
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