Silverlight 访问键快捷键
我需要为“保存”等多个功能提供访问快捷键。为此，我首先处理根对象的 KeyUp 事件，该对象是一个名为 LayoutRoot 的网格（通常在 Silverlight 用户控件或页面中默认创建）。
我正在使用 MVVM 模式，但为此我在后面的代码中添加了代码（这是 UI 交互，所以看起来没问题）：
private void LayoutRoot_KeyUp(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.S:
if ((Keyboard.Modifiers & ModifierKeys.Windows) == ModifierKeys.Windows)
{
e.Handled = true;
// save
}
break;
case Key.C:
if ((Keyboard.Modifiers & ModifierKeys.Windows) == ModifierKeys.Windows)
{
e.Handled = true;
// clear fields
}
break;
}
}
我使用了 Windows 键，因为浏览器中没有快捷方式可以使用它我知道。
我使用命令在“保存”按钮上实现“保存”功能，因此保留了 MVVM 模式。例如，
public RelayCommand CommandSavePtr { get; private set; }
CommandSavePtr = new RelayCommand(OnSavePtr);
private void OnSavePtr()
{
....
在 XAML 中： -
<Button x:Name="SavePtrButton"
Command="{Binding CommandSavePtr}"
Style="{StaticResource StandardButtonStyle}"
IsEnabled="{Binding Ptr.HasErrors, Converter={StaticResource NotOperatorValueConverter}}">
<StackPanel Orientation="Horizontal">
<Image Source="/G4SPrisonerEscorting_ResourceDictionaries;component/images/accept.png" Style="{StaticResource SubPanelIconStyle}"/>
<TextBlock Text="Save"/>
</StackPanel>
</Button>
我现在的问题是，我不知道如何从上面的 KeyUp 事件与 ViewModel 进行通信，以执行单击“保存”按钮时执行的相同“保存”功能。
谁能指出我正确的方向。
顺便说一句，我正在使用 GalaSoft 的 MVVM Light 来执行命令。
I need to provide access key shortcut for several functions such as Save. To do this I have started by handling the KeyUp event of my root object which is a Grid called LayoutRoot (typically created as default in a Silverlight UserControl or Page).
I am using an MVVM pattern but for this I have added code in the code behind as such (this is UI interaction so it seems OK):
private void LayoutRoot_KeyUp(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.S:
if ((Keyboard.Modifiers & ModifierKeys.Windows) == ModifierKeys.Windows)
{
e.Handled = true;
// save
}
break;
case Key.C:
if ((Keyboard.Modifiers & ModifierKeys.Windows) == ModifierKeys.Windows)
{
e.Handled = true;
// clear fields
}
break;
}
}
I have used the Windows key because there are no shorcuts in the browser that use it as far as I know.
I implement the Save functionality on the Save button using a Command, therefore maintaining the MVVM pattern. E.g.
public RelayCommand CommandSavePtr { get; private set; }
CommandSavePtr = new RelayCommand(OnSavePtr);
private void OnSavePtr()
{
....
In XAML: -
<Button x:Name="SavePtrButton"
Command="{Binding CommandSavePtr}"
Style="{StaticResource StandardButtonStyle}"
IsEnabled="{Binding Ptr.HasErrors, Converter={StaticResource NotOperatorValueConverter}}">
<StackPanel Orientation="Horizontal">
<Image Source="/G4SPrisonerEscorting_ResourceDictionaries;component/images/accept.png" Style="{StaticResource SubPanelIconStyle}"/>
<TextBlock Text="Save"/>
</StackPanel>
</Button>
My problem now is that I don't know how to communicate to the ViewModel from my above KeyUp event to perform the same Save function that is perfomed when clicking the Save button.
Could anyone point me in the right direction.
BTW I am using GalaSoft's MVVM Light to do the Commanding.
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这是一个老问题，但我想如果其他人偶然发现同样的问题，我无论如何都会回答它。
应该可以通过以下方式在代码隐藏中触发按钮的命令：
This is an old question, but I thought I would answer it anyway if someone else stumbles upon the same problem.
It should be possible to fire the command for the button in the code-behind in the following manner: