Wpf 在TabControl中从绑定的源动态添加和删除TabItem
我身上发生了一些奇怪的事情:- 我有一个TabControl。ItemSource绑定到一个列表。 以下是TabItemBase的定义:Wpf 在TabControl中从绑定的源动态添加和删除TabItem,wpf,data-binding,tabcontrol,Wpf,Data Binding,Tabcontrol,我身上发生了一些奇怪的事情:- 我有一个TabControl。ItemSource绑定到一个列表。 以下是TabItemBase的定义: public class TabItemBase : UserControl { #region Properties public virtual string TabName { get; set; } public virtual string TabHeader { get; set; } #endregion } 下
public class TabItemBase : UserControl
{
#region Properties
public virtual string TabName { get; set; }
public virtual string TabHeader { get; set; }
#endregion
}
下面是我声明TabControl的XAML:
<TabControl ItemsSource="{Binding Views, Mode=TwoWay}" ItemContainerStyle="{StaticResource TabItemTemplate}"
SelectedItem="{Binding SelectedView}" Name="MainTabControl" />
然后我添加了一个NavigationService,它管理导航,因为它的名称非常明确:-。代码如下:
public class NavigationService
{
#region ctor
public NavigationService(MainViewModel vm)
{
ViewModel = vm;
}
#endregion
#region Properties
public MainViewModel ViewModel { get; set; }
#endregion
#region Methods
public void NavigateTo(string viewName)
{
TabItemBase view = ViewModel.Views.FirstOrDefault(v => v.TabName.Equals(viewName));
if (view == null)
{
switch (viewName)
{
case ViewNames.Home:
view = new HomeView();
break;
case ViewNames.Carriers:
case ViewNames.Clients:
break;
case ViewNames.Commands:
view = new CommandsView();
break;
case ViewNames.Help:
case ViewNames.Inputs:
case ViewNames.Providers:
case ViewNames.Sorts:
case ViewNames.Users:
break;
default:
MessageBox.Show(DefaultMessages.NavigationFailed);
return;
}
ViewModel.Views.Add(view);
ViewModel.OnPropertyChanged("Views");
}
if (ViewModel.SelectedView != null && ViewModel.SelectedView.DataContext != null)
{
(ViewModel.SelectedView.DataContext as ViewModelBase).OnUnLoaded();
}
ViewModel.SelectedView = view;
(ViewModel.SelectedView.DataContext as ViewModelBase).OnLoaded();
}
#endregion
}
我在单击我的按钮时执行此操作:
NavigationService ns = new NavigationService(this);
ns.NavigateTo(ViewNames.Commands);
这是行不通的。它在集合中添加视图,但在UI中看不到它
有人能帮我吗?因为我的头发开始松了
干杯
Thomas您的TabItemBase必须继承自TabItem而不是UserControl,或者必须定义TabControl.ItemTemplate
让我知道哪种解决方案适合您。最后,我改变了方法:-
NavigationService ns = new NavigationService(this);
ns.NavigateTo(ViewNames.Commands);