在使用ListViewItem ContextMenu的g.cs文件中出现错误

本文关键字：文件 错误 cs ListViewItem ContextMenu | 更新日期: 2023-09-27 18:07:44

我有一个ListView，为每个定义的项目提供上下文菜单:

<ListView>
    <ListView.ItemContainerStyle>
        <Style TargetType="{x:Type ListViewItem}">
            <Setter Property="Foreground" Value="{Binding ListViewForeground}"/>
            <Setter Property="HorizontalContentAlignment" Value="Center"/>
            <Setter Property="ContextMenu">
                <Setter.Value>
                    <ContextMenu>
                        <MenuItem Header="Edit" Click="editContextMenuItem_Click"/>
                        <MenuItem Header="{Binding enable_Disable_OppositeText}" Click="enable_disable_ContextMenuItem_Click"/>
                        <MenuItem Header="Delete" Click="deleteContextMenuItem_Click"/>
                    </ContextMenu>
                </Setter.Value>
            </Setter>
            <EventSetter Event="Control.MouseDoubleClick" Handler="discreteListViewItem_MouseDoubleClick"/>
        </Style>
    </ListView.ItemContainerStyle>
</ListView>

和后面的Click处理程序:

private void editContextMenuItem_Click(object sender, RoutedEventArgs e)
{
    Console.WriteLine("Edit");
}
private void enable_disable_ContextMenuItem_Click(object sender, RoutedEventArgs e)
{
    Console.WriteLine("Enable/Disable");
}
private void deleteContextMenuItem_Click(object sender, RoutedEventArgs e)
{
    Console.WriteLine("Delete");
}

当前，这显示了构建/运行时.g.cs文件中的错误:

    <
  1. }预期/gh><
  2. {预期/gh>
  3. 无效的表达式术语'}'
  4. ;将

如果3个Menu Item行被删除，则构建成功。清洗溶液和重建都不起作用;删除bin和obj目录并重新构建也没有。同时，命名空间和类名也没有改变。

在使用ListViewItem ContextMenu的g.cs文件中出现错误

我能够重现这个问题。在我的项目EventSetter.Handler下划线(VS 2015)错误:

属性'Handler'的值无效:'Microsoft.VisualStudio.DesignTools.Xaml.LanguageService.Semantics.XmlValue

在EventSetter文档中有一些注释，但我没有花时间阅读它们。我想出了一个可行的解决方案，如下所示:

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication2"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <ListView>
        <ListView.Resources>
            <Style TargetType="{x:Type ListViewItem}">
                <EventSetter Event="Control.MouseDoubleClick" Handler="discreteListViewItem_MouseDoubleClick"/>
            </Style>
        </ListView.Resources>
        <ListView.ItemContainerStyle>
            <Style TargetType="{x:Type ListViewItem}">
               <Setter Property="Foreground" Value="{Binding ListViewForeground}"/>
               <Setter Property="HorizontalContentAlignment" Value="Center"/>
               <Setter Property="ContextMenu">
                   <Setter.Value>
                       <ContextMenu>
                           <MenuItem Header="Edit" Click="editContextMenuItem_Click"/>
                           <MenuItem Header="{Binding enable_Disable_OppositeText}" Click="enable_disable_ContextMenuItem_Click"/>
                           <MenuItem Header="Delete" Click="deleteContextMenuItem_Click"/>
                       </ContextMenu>
                   </Setter.Value>
               </Setter>
            </Style>
        </ListView.ItemContainerStyle>
    </ListView>
</Window>
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