如何改变wpf TabControl中TabItem的顺序 [英] How to change the order of the TabItem in the wpf TabControl

问题描述

我需要更改 TabItem 的顺序.

I need to change the order of the TabItem.

我试过删除/插入，但它不起作用.

I've tried with Remove / Insert and it doesn't works.

void UserControl_Loaded(object sender, RoutedEventArgs e) {
  if(condition) {
    TabControl.Items.Remove(TabItem);
      TabControl.Items.Insert(0, TabItem);
    }
}

无效操作异常:元素已经有一个逻辑父元素.它必须先与旧父级分离，然后才能附加到新父级.

InvalidOperationException: Element already has a logical parent. It must be detached from the old parent before it is attached to a new one.

如何解决这个问题?

推荐答案

使用for"代替foreach"解决.

Solved using the "for" instead of "foreach".

if(condition) {    
  var tabItem = Tab.Items[index];
  Tab.Items.RemoveAt(index);
  Tab.Items.Insert(0, tabItem);
  ((TabItem)tabItem).IsSelected = true;
}

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