标签:ali bsp param xaml selected data man pre inter
原文:WPF MVVM 子页面控制主窗体新增tab页面
一、方案
利用viewmodel之间消息传递方式
二、子页面
1、view.xaml
- <Button Content="接谈" Command="{Binding DataContext.JtCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}"
- Style="{StaticResource ButtonSuccess}" CommandParameter="{Binding Param}" Cursor="Hand"/>
2、viewmodel
-
- public RelayCommand<string> JtCommand =>
- new Lazy<RelayCommand<string>>(() =>
- new RelayCommand<string>(Jt)).Value;
-
- private void Jt(string param)
- {
- SendInfo = param;
- //消息传递给PindexModel接收,打开新的页面,第二个参数为消息key,控制接收对象
- Messenger.Default.Send<String>(SendInfo, "AddTab");
-
- }
三、主窗体页面
1、viewmodel
- public PIndexViewModel()
- {
- MenuList = GetMenuList();
- MenuSelectedIndex = 0;
- DataList = GetTabControlDataList();
-
- //接收其他页面传递的消息,第二个参数为消息key,控制接收对象
- Messenger.Default.Register<String>(this, "AddTab", ReceiveInfo);
-
- DateShow();
- timer = new DispatcherTimer();
- timer.Interval = TimeSpan.FromSeconds(1);
- timer.Tick += new EventHandler(TimerTick);
- timer.Start();
- }
- /// <summary>
- /// 消息处理
- /// </summary>
- /// <param name="msg"></param>
- private void ReceiveInfo(string msg)
- {
- AddTabItem(msg);
- }
2、xaml.cs
- public PIndex()
- {
- InitializeComponent();
- //卸载当前(this)对象注册的所有MVVMLight消息
- this.Unloaded += (sender, e) => Messenger.Default.Unregister(this);
- }
标签:ali bsp param xaml selected data man pre inter
原文地址:https://www.cnblogs.com/lonelyxmas/p/12164905.html