<Window x:Class="CommandDemo.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:CommandDemo"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<StackPanel Margin="10">
<TextBox Text="{Binding Name,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Height="40" />
<TextBlock Text="键盘tab,可以让Border获得焦点" />
<Border Width="100" Height="100" Background="Red" Focusable="True">
<Border.InputBindings>
<!--绑定鼠标左键双击-->
<MouseBinding MouseAction="LeftDoubleClick" Command="{Binding DoubleClickCommand}" CommandParameter="{Binding}" />
<!--绑定获取键盘焦点时,按下键盘组合键Ctrl+Enter时触发-->
<KeyBinding Key="Enter" Modifiers="Control" Command="{Binding KeyCommand}" CommandParameter="{Binding}" />
</Border.InputBindings>
</Border>
</StackPanel>
</Grid>
</Window>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace CommandDemo
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new MainViewModel();
}
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
namespace CommandDemo
{
class MainViewModel : INotifyPropertyChanged
{
private string name;
public event PropertyChangedEventHandler PropertyChanged;
public MainViewModel()
{
DoubleClickCommand = new DoubleClickCommand();
KeyCommand = new KeyCommand();
}
public string Name
{
get => name;
set
{
name = value;
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Name)));
}
}
public ICommand DoubleClickCommand { get; private set; }
public ICommand KeyCommand { get; private set; }
}
class DoubleClickCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
if (parameter is MainViewModel vm)
{
MessageBox.Show(vm.Name);
}
MessageBox.Show("DoubleClick");
}
}
class KeyCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
if (parameter is MainViewModel vm)
{
MessageBox.Show(vm.Name);
}
MessageBox.Show("Key");
}
}
}