如何在 C# 中捕获物理键盘输入？

Question

private void send_Click(object sender, RoutedEventArgs e)
{
    (Application.Current as App).Broadcast(new ChatMessage { Username = name.Text, Message = text.Text });
    text.Text = "";
}

This is my click event but I'm tired of moving my cursor to click it. Is there any way to set the enter button to active this event?

Answer 1

You can bind the key bindings in the xaml file as follows:

<Window.InputBindings>
    <KeyBinding Key="Return" Command="{Binding EnterKeyPressCommand}"/>
</Window.InputBindings>

EnterKeyPressCommand: This can be a DelegateCommand in the code behind or view model whatever is the DataContext of your view.

Answer 2

您可以在文本框中添加 KeyDown 事件，并在按下“Enter”时触发 send_Click 事件。

Answer 3

Just capture the KeyDown event handle for the container you want to capture the input for, and then to judge if the input virtual key is Enter . For example, the following demo capture the keyboard inputs for CoreWindow .

public MainPage()
{
    this.InitializeComponent();
    Window.Current.CoreWindow.KeyDown += CoreWindow_KeyDown;
}

private void CoreWindow_KeyDown(Windows.UI.Core.CoreWindow sender, Windows.UI.Core.KeyEventArgs args)
{           
    if (args.VirtualKey == VirtualKey.Enter)
    {
        System.Diagnostics.Debug.WriteLine(args.VirtualKey.ToString());
        //(Application.Current as App).Broadcast(new ChatMessage { Username = name.Text, Message = text.Text });
        //text.Text = "";
    }
}

More details please reference Keyboard events .