Caliburn Micro "No target found for method Event..." 用于 TreeView SelectedItemChanged 事件

Question

我遇到以下问题（仅显示我的代码片段）：

XAML:

    <TreeView Name="TypeTree" ItemsSource="{Binding TypeTreeItems}" 
      cal:Message.Attach="[Event SelectedItemChanged] = Action[SetSelectedType($this.SelectedItem)]">
            <TreeView.ItemTemplate>
                   <HierarchicalDataTemplate ItemsSource="{Binding Path=mChildren}">
                       <TextBlock Text="{Binding Path=mNodeName}"/>
                   </HierarchicalDataTemplate>
               </TreeView.ItemTemplate>
           </TreeView>

视图模型：

    public void SetSelectedType(TreeNode item) 
    {
        MessageBox.Show("Here");
        _selectedType = item;
    }

System.Exception: 'No target found for method Event SelectedItemChanged = ActionSetSelectedSource.'

我还是 MVVM 和 Caliburn Micro 的新手，所以我不确定是什么导致了这个问题。任何人都能够提供一些关于我哪里出错的指导？如果有帮助，很高兴提供更多片段！

谢谢！

Answer 1

语法错误。试试这个：

cal:Message.Attach="[Event SelectedItemChanged] = [Action SetSelectedType($this.SelectedItem)]"

Caliburn Micro "No target found for method Event..." 用于 TreeView SelectedItemChanged 事件

Caliburn Micro "No target found for method Event..." for TreeView SelectedItemChanged event

c#

wpf

xaml

caliburn.micro