执行命令不会在后面的资源字典代码中触发

发布于 2024-10-31 21:24:45 字数 1047 浏览 0 评论 0原文

我已经为其创建了资源字典和代码隐藏文件。在 XAML 中，我定义了命令绑定并添加了执行处理程序：

<Button Grid.Row="2" Width="100" >
  <CommandBinding Command="Search" Executed="CommandBinding_Executed" />
</Button>

这是隐藏的代码：

partial class StyleResources : ResourceDictionary {

        public StyleResources() {
            InitializeComponent();
        }
        private void CommandBinding_Executed(object sender, ExecutedRoutedEventArgs e) {
            //this is never executed
        }
    }

我不知道为什么单击按钮时命令不执行，而且，为什么当我没有将 CanExecute 设置为 true 时启用按钮。我也尝试将其设置为 true，但 CanExecute 事件也没有触发。这是我使用资源字典的方式：

public partial class MyWindow : Window {
        public MyWindow() {
            InitializeComponent();
            Uri uri = new Uri("/WPFLibs;component/Resources/StyleResources.xaml", UriKind.Relative);
            ResourceDictionary Dict = Application.LoadComponent(uri) as ResourceDictionary;
            this.Style = Dict["WindowTemplate"] as Style;
        }
    }

原文

I have created resource dictionary and code behind file for it.
In XAML I have defined command binding and added Executed handler:

<Button Grid.Row="2" Width="100" >
  <CommandBinding Command="Search" Executed="CommandBinding_Executed" />
</Button>

Here is code behind:

partial class StyleResources : ResourceDictionary {

        public StyleResources() {
            InitializeComponent();
        }
        private void CommandBinding_Executed(object sender, ExecutedRoutedEventArgs e) {
            //this is never executed
        }
    }

I don't know why is command not executing when button is clicked, and also, why is button enabled when I didn't set CanExecute to true. I have also tried to set it to true, but CanExecute event didn't fire as well.
Here is how I am using the resource dictionary:

public partial class MyWindow : Window {
        public MyWindow() {
            InitializeComponent();
            Uri uri = new Uri("/WPFLibs;component/Resources/StyleResources.xaml", UriKind.Relative);
            ResourceDictionary Dict = Application.LoadComponent(uri) as ResourceDictionary;
            this.Style = Dict["WindowTemplate"] as Style;
        }
    }

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夏夜暖风 2024-11-07 21:24:45

这不是将命令绑定到按钮的方式。它应该看起来像这样：

<Grid>
  <Grid.CommandBindings>
    <CommandBinding Command="Search" 
                    Executed="Search_Executed"
                    CanExecute="Search_CanExecute" />
  </Grid.CommandBindings>
  ...
  <Button Grid.Row="2" Width="100" Command="Search" />
  ...
</Grid>

在代码隐藏中：

private void Search_Executed(object sender, ExecutedRoutedEventArgs e) {
    // do something
}

private void Search_CanExecute(object sender, CanExecuteRoutedEventArgs e) {
    e.CanExecute = ...; // set to true or false
}

This is not how you bind commands to buttons. It should look something like this:

<Grid>
  <Grid.CommandBindings>
    <CommandBinding Command="Search" 
                    Executed="Search_Executed"
                    CanExecute="Search_CanExecute" />
  </Grid.CommandBindings>
  ...
  <Button Grid.Row="2" Width="100" Command="Search" />
  ...
</Grid>

And in codebehind:

private void Search_Executed(object sender, ExecutedRoutedEventArgs e) {
    // do something
}

private void Search_CanExecute(object sender, CanExecuteRoutedEventArgs e) {
    e.CanExecute = ...; // set to true or false
}

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