MvvmLight EventToCommand和WPFToolkit DataGrid中双击 [英] MvvmLight EventToCommand and WPFToolkit DataGrid double-click

问题描述

试图找出如何使用EventToCommand设置的行DataGrid中双击处理程序。该命令居住在视图模型的每一行。刚是的离谱了我的经验，因为我没有用互动呢。

Trying to figure out how to use EventToCommand to set a datagrid double click handler for rows. The command lives in the viewmodel for each row. Just that much out of my experience, since I haven't used interactions yet.

感谢。

我会用mvvmlight标签，但我没有足够高的声望还没有做出新的标签。

I would have used mvvmlight tag, but I don't have high enough rep yet to make new tags.

推荐答案

这将是解决办法，如果命令住在GridVieModel，而不是对RowViewModel。

This would be the solution if the Command lives on the "GridVieModel" and not on the "RowViewModel".

    <Window...    
         ...xmlns:dg="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit" 
            xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" 
            xmlns:GalaSoft_MvvmLight_Command="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras">
         <dg:DataGrid x:Name="dg">
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="MouseDoubleClick">
                            <GalaSoft_MvvmLight_Command:EventToCommand CommandParameter="{Binding SelectedItem, ElementName=dg}" Command="{Binding Path=SelectCommand, Mode=OneWay}"/>
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
            </dg:DataGrid>
    </Window>

您可以创建一个rowview自排也有自己的视图模型，并用一个孩子的MouseDoubleClick事件。在rowview行（容器）的元素

You could create a rowview since the row also has its own viewmodel and use the mousedoubleclick event of a child element of the row (container) in the rowview.

或者您为您的命令绑定一个转换器：

Or you create a converter for your command binding:

<GalaSoft_MvvmLight_Command:EventToCommand Command="{Binding SelectedItem, ElementName=dg, Mode=OneWay, Converter=...}"/>

转换器，然后将检查selectedItem设置为所需类型的返回指令（喜欢的东西ISelectCommandable用RelayCommand属性）

The converter then would check if the selectedItem is of the required type to return the command (Something like ISelectCommandable with a RelayCommand Property)

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