将所选项目作为参数发送到视图模型 [WPF,Caliburn] 中的方法 [英] send selected item as parameter to method in view-model [WPF,Caliburn]

问题描述

我有这个问题.我在 WPF 中使用 caliburn micro.在视图中，我有列表框，并且在视图模型中绑定了事件 MouseDoubleClick 方法.我想发送作为参数选择的列表框项目.但是不知道怎么弄.

I have this problem. I use caliburn micro in WPF. In view I have listbox, and I bind on event MouseDoubleClick method in view-model. I would like send as parameter selected listbox item. But I don’t know how do it.

鉴于我有这个:

    <ListBox Name="Friends" 
             SelectedItem="Key"
             Style="{DynamicResource friendsListStyle}"
             Grid.Row="2" 
             Margin="4,4,4,4"

             Micro:Message.Attach="[MouseDoubleClick]=[Action SendRp(Key)]"

             PreviewMouseRightButtonUp="ListBox_PreviewMouseRightButtonUp"
             PreviewMouseRightButtonDown="ListBox_PreviewMouseRightButtonDown" 
             MouseRightButtonDown="FriendsListBoxMouseRightButtonDown"/>

在视图模型中我有这个方法:

In view model I have this method:

    public void SendRp(string key)
    {
        MessageBox.Show(key);
    }

任何提前，谢谢.

推荐答案

我对caliburn了解不多，但我猜你必须写

I dont know much about caliburn but my guess is you have to write

Micro:Message.Attach="[MouseDoubleClick]=[Action SendRp(Friends.SelectedItem)]"

您也应该省略 SelectedItem="Key" 或使用与 ViewModel 的绑定，如下所示:

also you should either omit the SelectedItem="Key" or use a binding to your ViewModel like this:

SelectedItem="{Binding Key}"

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