WPF TabControl 使用命令更改 TabItem
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WPF TabControl change TabItem with Command
提问by Peter
I have a WPF application and in the main window I have a TabControl.
I would like the TabItemsto fire a RelayCommandthat I have in my ViewModelwhen they get selected (different commands for each TabItem).
I don't want a TabItemto be selected for some conditions that are set in the commands CanExecutefunction.
Is this possible?
我有一个 WPF 应用程序，在主窗口中有一个TabControl. 我想在他们被选中时TabItems触发RelayCommand我的一个ViewModel（每个命令都有不同的命令TabItem）。我不希望TabItem为命令CanExecute函数中设置的某些条件选择a 。这可能吗？
回答by Jobi Joy
I think the right way to go here is not 'ICommand' but just a ViewModel property which will twoway bind to the TabControl.SelectedIndex (or SelectedItem) then you can take the decision in the ViewModel. This is better than defining a lot of commands specific to each TabItem
我认为正确的方法不是“ICommand”，而只是一个 ViewModel 属性，它将双向绑定到 TabControl.SelectedIndex（或 SelectedItem），然后您可以在 ViewModel 中做出决定。这比定义许多特定于每个 TabItem 的命令要好
<TabControl SelectedIndex="{Binding VMSelectedTabIndex, Mode=TwoWay}">
//OR
<TabControl SelectedItem="{Binding VMSelectedItem, Mode=TwoWay}">
