使用带有TabItem的命令 [英] Use a Command with TabItem

问题描述

我想在选择我的TabControl的TabItem的调用命令。

I would like to call a Command when a TabItem of my TabControl is selected.

有没有办法做到这一点不打破MVVM模式？

Is there a way to do it without breaking the MVVM pattern ?

推荐答案

使用的 AttachedCommand行为，这将让你命令绑定到WPF事件

Use an AttachedCommand Behavior, which will let you bind a Command to WPF events

<TabControl ...
    local:CommandBehavior.Event="SelectionChanged"  
    local:CommandBehavior.Command="{Binding TabChangedCommand}" />

当然，如果你使用MVVM设计模式，结合的SelectedItem 或的SelectedIndex ，也可以运行在的PropertyChanged 事件的命令

Of course, if you're using the MVVM design pattern and binding SelectedItem or SelectedIndex, you could also run the command in the PropertyChanged event

void MyViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
    if (e.PropertyName == "SelectedIndex")
        RunTabChangedLogic();
}

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