WPF ListBox 鼠标左键双击

WPF  ListBox  鼠标左键双击

XAML

 

<!--鼠标左键双击-->
        <ListBox.ItemTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding  Path=Text}" ToolTip="鼠标左键双击，采集本年度！">
                    <TextBlock.InputBindings>
                        <MouseBinding Command="{Binding DataContext.SelectListBoxItemCommand, ElementName=mainWin }" 
                                              CommandParameter="{Binding ElementName=lst}"  
                                              MouseAction="LeftDoubleClick"></MouseBinding>
                    </TextBlock.InputBindings>
                </TextBlock>
            </DataTemplate>
        </ListBox.ItemTemplate>

 DataContext.SelectListBoxItemCommand 绑定的命令

ElementName=mainWin                                                          这里是当前窗口名称，也就是DataContext的宿主
CommandParameter="{Binding ElementName=lst}"              lst为ListBox名称
 MouseAction="LeftDoubleClick"                                             Action类型

 

 

 

Model 

public class TextItem
{
   public TextItem(string text)
   {
            Text = text;
   }

   public string  Text { get; set; }
        
}

 ViewModel

        private ICommand _SelectListBoxItemCommand;
        public ICommand SelectListBoxItemCommand
        {
            get
            {
                if (this._SelectListBoxItemCommand == null)
                    this._SelectListBoxItemCommand = new RelayCommandBase(SelectList_MouseDoubleClick);
                return this._SelectListBoxItemCommand;
            }
        }

        private void SelectList_MouseDoubleClick(object obj)
        {
           var lst= obj as ListBox;
            TextItem textItem = lst.SelectedItem as TextItem;

            //Task.Run(()=> GetOneYear(textItem));//实现
           
        }

 obj可以接收 CommandParameter 传递的参数。即Listbox