多个键绑定到单个命令

问题描述

我的窗口只有一个列表视图.这便于用户增量搜索数据库.由于设计没有文本框，因此我必须全局处理键.我认为可以通过绑定来实现.但是我该如何处理所有键并将其关联到单个命令.

My window has just a listview. This facilitates the users to incremental search the db. Since the design does not have a textbox, i've to globally handle the keys. I think it could be achieved by keybinding. But how can i handle all the keys and associate it to a single command.

还建议我其他方法.

P.S .:我想要xaml

P.S.: I want this in xaml

推荐答案

我将使用EventToCommand将KeyDown事件绑定到ViewModel上的命令.您可以将PassEventArgsToCommand设置为true，然后使用RelayCommand来找出按下的键.

I would use an EventToCommand binding the KeyDown event to a command on the ViewModel. You can set PassEventArgsToCommand to true, and use a RelayCommand to find out what key as pressed.

MVVM Light Toolkit中提供了所有这些对象

All these objects are available in the MVVM Light Toolkit

http://www.galasoft.ch/mvvm/getstarted

干杯，洛朗(Laurent)

Cheers,Laurent

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