当DataTemplate为Button时，ListBox项目返回字符串

当DataTemplate为Button时，ListBox项目返回字符串

frameworkTemplate.FindName Method (String,frameworkElement)

为此，您需要：

private childItem FindVisualChild<childItem>(DependencyObject obj)where childItem : DependencyObject{        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)        { DependencyObject child = VisualTreeHelper.GetChild(obj, i); if (child != null && child is childItem)     return (childItem)child; else {     childItem childOfChild = FindVisualChild<childItem>(child);     if (childOfChild != null)         return childOfChild; }        }        return null;}

然后：

for (int i = 0; i < Game_ScrollViewer_online.Items.Count; i++){     ListBoxItem GameListBoxItem = (ListBoxItem)(Game_ScrollViewer_online.ItemContainerGenerator.ContainerFromIndex(i));     ContentPresenter contentPresenter = FindVisualChild<ContentPresenter>(GameListBoxItem);     DataTemplate myDataTemplate = contentPresenter.ContentTemplate;     Button tempBut = (Button) myDataTemplate.FindName("Current_game_button", contentPresenter);     //Do stuff with button}

要解决这样的缺失

FindName

用法

FindDescendant

：

public T FindDescendant<T>(DependencyObject obj) where T : DependencyObject{    if (obj is T)        return obj as T;    int childrenCount = VisualTreeHelper.GetChildrenCount(obj);    if (childrenCount < 1)        return null;    for (int i = 0; i < childrenCount; i++)    {        DependencyObject child = VisualTreeHelper.GetChild(obj, i);        if (child is T) return child as T;    }    for (int i = 0; i < childrenCount; i++)    {        DependencyObject child = FindDescendant<T>(VisualTreeHelper.GetChild(obj, i));        if (child != null && child is T) return child as T;    }    return null;}