在Silverlight应用程序中使用空格键选择Datagrid行

Question

I have a Datagrid in Silverlight application. The user is able to get the focus on Datagrid using Tab key and move between various rows using Up and Down arrow Key.

Please advice, how to fire row select event when the user hits the Spacebar Key for an selected row.

Below is the code snippet:

<Custom:ClientControl  
x:Class="TestNamespace.Modules.Views.SampleView"
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"  
mc:Ignorable="d"  
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" 
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity">
<sdk:DataGrid x:Name="dg" ...>
  <i:Interaction.Triggers>
    <i:EventTrigger EventName="MouseLeftButtonUp">
      <i:InvokeCommandAction Command="{Binding DoSomething}" />
    </i:EventTrigger>
  </i:Interaction.Triggers>
<sdk:DataGrid.Columns>
...

Answer 1

Apprently the solution turned out to be very smiple.

Step 1: Add KeyDown to the Datagrid.

<sdk:DataGrid x:Name="dg" KeyDown="dg_KeyDown">

Step 2: In .XAML.CS file inside Datagrid KeyDown event invoke the method which handles MouseLeftButtonUp event.

private void dg_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
    if (e.Key == System.Windows.Input.Key.Space)
    {
        this.viewModel.DoSomething();
    }
}

Answer 2

Try this:

<DataGrid>
    <DataGrid.InputBindings>
         <KeyBinding Key="Space" Command="{Binding DoSomething}"/>
    </DataGrid.InputBindings>
</DataGrid>

You can bind the selected value to a property in your View model.