事件'foo'不是RoutedEvent [英] The event 'foo' is not a RoutedEvent

问题描述

我尝试在现有项目的用户控件中创建路由事件，但收到错误消息The event 'foo' is not a RoutedEvent.

I tried making a Routed Event in a user control of an existing project and I'm getting the error message The event 'foo' is not a RoutedEvent.

为确保我没有发疯，我使用了 just 令人反感的代码(最小，完整且可验证的示例" ).

To make sure I wasn't crazy, I made an example project with just the offending code (a Minimal, Complete, and Verifiable example").

在我的示例项目中，只有我没有收到任何错误消息. 但这是完全相同的代码！

Only I don't get any error message in my example project. But it's the exact same code!

即使出现错误消息，项目也可以编译，并且RoutedEvent可以正常工作！

Even with the error message, the project compiles and the RoutedEvent works!

我尝试清理项目，重建，重新启动VS和我的PC，但是无论我做什么，此错误消息仍然存在.

I tried cleaning the project, rebuilding, restarting VS and my PC, but no matter what I do this error message persists.

我相信这只是一个IDE问题.

I beleive this is just an IDE issue.

我正在使用Microsoft Visual Studio Professional 2015版本14.0.25431.01更新3

I'm using Microsoft Visual Studio Professional 2015 Version 14.0.25431.01 Update 3

namespace Okuma_FFP
{
    using System.Windows;
    using System.Windows.Controls;

    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
            RaiseEvent(new RoutedEventArgs(fooEvent, this));
        }

        public static readonly RoutedEvent fooEvent = EventManager.RegisterRoutedEvent(
            "foo", RoutingStrategy.Direct, typeof(RoutedEventHandler), typeof(UserControl1));

        // Provide CLR accessors for the event 
        public event RoutedEventHandler foo
        {
            add { AddHandler(fooEvent, value); }
            remove { RemoveHandler(fooEvent, value); }
        }
    }
}

UserControl1.xaml

<UserControl x:Class="Okuma_FFP.UserControl1"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Okuma_FFP"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="local:UserControl1.foo">
            <BeginStoryboard>
                <Storyboard>
                    <ColorAnimation  
                        To="Blue"
                        Duration="0:0:5" 
                        Storyboard.TargetProperty="(Background).(SolidColorBrush.Color)"/>
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </UserControl.Triggers>
    <Grid>  </Grid>
</UserControl>

推荐答案

这是一个IDE错误.
可能的重复项:即使创建了项目，Visual Studio也会显示错误

This is an IDE bug.
Possible duplicate: Visual Studio displaying errors even if projects build

我从此答案中得到了提示，并确保在清理解决方案和构建之间退出VS./p>

I took a hint from this answer and made sure to exit VS in-between cleaning the solution and building.

1. 删除所有obj，bin，release和debug文件夹
2. 删除Project_Folder\.vs\Project_Name\v14\.suo
3. 在Visual Studio中打开解决方案
4. 清洁溶液
5. 退出Visual Studio
6. 再次打开解决方案
7. 构建，构建，构建...
8. 确认它已经固定，可以去喝咖啡

1. Delete all obj, bin, release, and debug folders
2. Delete Project_Folder\.vs\Project_Name\v14\.suo
3. Open the solution in Visual Studio
4. Clean Solution
5. Exit Visual Studio
6. Open the solution again
7. Build, build, build...
8. Confirm it's fixed and go get coffee

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