问题描述
我正在使用选项卡控件，我想处理 tabchanged 事件.
I'm using tab control and I want to handle tabchanged event.
我试图使用 SelectionChanged 事件，但没有成功.它被触发了太多次(在加载选项卡控件或添加新选项卡之后).我只想在用户在选项卡之间导航时处理此事件.
I was trying to use SelectionChanged event with no luck. It's being fired too many times (after loading tabcontrol, or adding new tab).
I would like to handle this event only when user navigates between tabs.
我找到了 WPF 的解决方案(标准 WPF 选项卡控件中是否存在 Selected Tab Changed 事件)，但这对 Silverlight 没有好处.TIA.
I have found solution for WPF (Is there Selected Tab Changed Event in the standard WPF Tab Control) but it's no good for Silverlight. TIA.
推荐答案
如果您检查事件中 SelectedIndex 属性的实际更改，则触发太多次"应该不是问题.
Firing "too many times" should not be a problem if you check for an actual change to the SelectedIndex property in the event.
private int LastSelectedTab = -1;
void tab_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
TabControl tab = sender as TabControl;
if (this.LastSelectedTab != tab.SelectedIndex)
{
this.LastSelectedTab = tab.SelectedIndex;
// Now do your thing...
}
}
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