MahApps Metro捕获关闭窗口事件

时间:2013-12-04 14:38:11

标签: wpf mahapps.metro

我正在使用MahApps Metro窗口样式,我希望在用户单击窗口的关闭按钮时捕获该事件。

我已将ShutdownMode设置为OnExplicitShutdown,因此我需要在点击该按钮时调用Application.Current.Shutdown();

我该怎么做?

4 个答案:

答案 0 :(得分:1)

我相信我也尝试使用WPF和MahApps.Metro做同样的事情(绑定到关闭窗口按钮)。我无法找到明确绑定到该命令的方法,但我能够通过将ShowCloseButton属性设置为false(隐藏它)然后创建我自己的关闭窗口命令按钮并处理逻辑来完成此操作。我的viewmodel。我花了一些时间,但我发现你可以在MahApps.Metro的命令栏中轻松添加你自己的窗口命令控件,只需在你的XAML中添加类似的标记:

<Controls:MetroWindow.WindowCommands>
    <Controls:WindowCommands>
        <Button Content="X" Command="{Binding CancelCommand}" />
    </Controls:WindowCommands>
</Controls:MetroWindow.WindowCommands>

答案 1 :(得分:1)

您需要创建DependencyProperty来处理关闭窗口行为:

<强>的DependencyProperty

namespace MyApp.DependencyProperties
{
    public class WindowProperties
    {
        public static readonly DependencyProperty WindowClosingProperty =
           DependencyProperty.RegisterAttached("WindowClosing", typeof(RelayCommand), typeof(WindowProperties), new UIPropertyMetadata(null, WindowClosing));

        public static object GetWindowClosing(DependencyObject depObj)
        {
            return (RelayCommand)depObj.GetValue(WindowClosingProperty);
        }

        public static void SetWindowClosing(DependencyObject depObj, RelayCommand value)
        {
            depObj.SetValue(WindowClosingProperty, value);
        }

        private static void WindowClosing(DependencyObject depObj, DependencyPropertyChangedEventArgs e)
        {
            var element = (Window)depObj;

            if (element != null)
                element.Closing += OnWindowClosing;

        }

        private static void OnWindowClosing(object sender, CancelEventArgs e)
        {
            RelayCommand command = (RelayCommand)GetWindowClosing((DependencyObject)sender);
            command.Execute((Window)sender);
        }
    }
}

在您的ViewModel

public RelayCommand WindowClosedCommand { get; set; }

private void WindowClose()
{
    Application.Current.Shutdown();
}

在ViewModel的构造函数

this.WindowCloseCommand = new RelayCommand(WindowClose);

在您的XAML中

<mah:MetroWindow x:Class="MyApp.Views.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mah="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        xmlns:dp="clr-namespace:MyApp.DependencyProperties"
        dp:WindowProperties.WindowClosing="{Binding WindowClosedCommand}" />

答案 2 :(得分:1)

由于来自gotapps.net的解决方案对我不起作用,因为我没有找到如何以编程方式执行此操作(我的窗口没有Xaml文件,它只是一个基类)。我找到了另一种解决方法,使用相同的按钮关闭Window,如下所示:

internal class BaseWindow : MetroWindow
{
        public BaseWindow()
        {
            this.Loaded += BaseWindow_Loaded;
        }

        void BaseWindow_Loaded(object sender, EventArgs e)
        {
            Button close = this.FindChild<Button>("PART_Close");
            close.Click += close_Click;
        }

        void close_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown(0);
        }
}

答案 3 :(得分:0)

您可以使用“关闭”或“关闭”事件

当用户单击“关闭”按钮时,将触发关闭处理程序。这也使您可以控制是否应关闭该应用程序。

类似地,Closed处理程序在窗口关闭之前被触发

<Controls:MetroWindow x:Class="MyClass.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
Title="My Class"
Closing="MainWindow_OnClosing">
</Controls:MetroWindow>