我是WPF新手，我正在尝试使用功能区控件。
我在应用程序中有一个标签，并希望隐藏标题但仍显示标签本身。
我一直在尝试各种属性和样式，但我只能隐藏整个标签。有什么想法吗？
答案 0 :(得分：3)
我设法通过将控件向上移动47个像素来隐藏标签页眉和应用程序菜单......
<r:Ribbon Margin="0,-47,0,0" DockPanel.Dock="Top" x:Name="ribbon">
注意：您可以通过执行此操作隐藏应用程序菜单而不隐藏选项卡...
<r:Ribbon DockPanel.Dock="Top" x:Name="ribbon">
<r:Ribbon.ApplicationMenu>
<r:RibbonApplicationMenu Visibility="Collapsed" />
</r:Ribbon.ApplicationMenu>
只隐藏标签标题，我不能这么做。通过覆盖功能区类，我确实非常接近如下......
class RibbonNoTab : Ribbon
{
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
var ctrl = this.GetDescendants<Grid>().FirstOrDefault();
if (ctrl != null)
{
ctrl.RowDefinitions[1].Height = new GridLength(0, System.Windows.GridUnitType.Pixel);
}
}
}
GetDescendants扩展方法只是在可视化树中搜索指定类型的内容。它来自这里：http://blog.falafel.com/finding-controls-by-type-in-silverlight-and-wpf/
上述方法的唯一问题是看起来像剩下的1像素高的条。你必须仔细观察才能看到它！
答案 1 :(得分：3)
我知道这已经超过一年了，但万一有其他人在这里钻研：
撇开其他答案，有几种方法可以在不使用自定义派生类的情况下完成
public class RibbonBehavior
{
public static bool GetHideRibbonTabs(DependencyObject obj)
{
return (bool)obj.GetValue(HideRibbonTabsProperty);
}
public static void SetHideRibbonTabs(DependencyObject obj, bool value)
{
obj.SetValue(HideRibbonTabsProperty, value);
}
// Using a DependencyProperty as the backing store for HideRibbonTabs. This enables animation, styling, binding, etc...
public static readonly DependencyProperty HideRibbonTabsProperty =
DependencyProperty.RegisterAttached("HideRibbonTabs", typeof(bool), typeof(RibbonBehavior), new UIPropertyMetadata(false,OnHideRibbonTabsChanged));
public static void OnHideRibbonTabsChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d == null || d.GetType() != typeof(Ribbon)) return;
(d as Ribbon).Loaded += ctrl_Loaded;
}
static void ctrl_Loaded(object sender, RoutedEventArgs e)
{
if (sender == null || sender.GetType() != typeof(Ribbon)) return;
Ribbon _ribbon = (Ribbon)sender;
var tabGrid = _ribbon.GetDescendants<Grid>().FirstOrDefault();
tabGrid.RowDefinitions[1].Height = new GridLength(0, System.Windows.GridUnitType.Pixel);
foreach (Line line in _ribbon.GetDescendants<Line>())
line.Visibility = Visibility.Collapsed;
}
}
然后在你的xaml：
<Ribbon SelectedIndex="0" a:RibbonBehavior.HideRibbonTabs="true">
这将为您提供一个没有标签的漂亮的方形带状框：
http://i.imgur.com/yCtt441.png
离开折叠线条的代码会留下一点点光圈，这就是以前的标签，这让我感到烦恼。
http://i.imgur.com/eDQ8yVw.png
如果您不使用MVVM，也可以将加载的代码直接放入代码中，如果不是，则可以在EventToCommand中。这种方式不太可重复使用，但结果相同。
编辑：这是GetDescendant方法的代码
public static class VisualTreeExtensions
{
/// <summary>
/// Gets children, children’s children, etc. from
/// the visual tree that match the specified type
/// </summary>
public static List<T> GetDescendants<T>(this DependencyObject parent)
where T : UIElement
{
List<T> children = new List<T>();
int count = VisualTreeHelper.GetChildrenCount(parent);
if (count > 0)
{
for (int i = 0; i < count; i++)
{
UIElement child = (UIElement)VisualTreeHelper.GetChild(parent, i);
if (child is T)
{
children.Add((T)child);
}
children.AddRange(child.GetDescendants<T>());
}
return children;
}
else
{
return new List<T> { };
}
}
/// <summary>
/// Gets children, children’s children, etc. from
/// the visual tree that match the specified type and elementName
/// </summary>
public static List<T> GetDescendants<T>(this DependencyObject parent, string elementName)
where T : UIElement
{
List<T> children = new List<T>();
int count = VisualTreeHelper.GetChildrenCount(parent);
if (count > 0)
{
for (int i = 0; i < count; i++)
{
UIElement child = (UIElement)VisualTreeHelper.GetChild(parent, i);
if (child is T && (child is FrameworkElement)
&& (child as FrameworkElement).Name == elementName)
{
children.Add((T)child);
}
children.AddRange(child.GetDescendants<T>(elementName));
}
return children;
}
else
{
return new List<T> { };
}
}
/// <summary>
/// Gets the first child, child’s child, etc.
/// from the visual tree that matches the specified type
/// </summary>
public static T GetDescendant<T>(this DependencyObject parent)
where T : UIElement
{
List<T> descendants = parent.GetDescendants<T>();
if (descendants.Count > 0)
{
return descendants[0];
}
else
{
return null;
}
}
/// <summary>
/// Gets the first child, child’s child, etc. from
/// the visual tree that matches the specified type and elementName
/// </summary>
public static T GetDescendant<T>(this DependencyObject parent, string elementName)
where T : UIElement
{
List<T> descendants = parent.GetDescendants<T>(elementName);
if (descendants.Count > 0)
{
return descendants[0];
}
else
{
return null;
}
}
/// <summary>
/// Gets the first parent, parent’s parent, etc. from the
/// visual tree that matches the specified type
/// </summary>
public static T GetAntecedent<T>(this DependencyObject root)
where T : UIElement
{
if (root == null)
{
return null;
}
if (root is T)
{
return (T)root;
}
else
{
DependencyObject parent = VisualTreeHelper.GetParent(root);
if (parent == null)
{
return null;
}
else
{
return parent.GetAntecedent<T>();
}
}
}
/// <summary>
/// Gets the first parent, parent’s parent, etc. from the
/// visual tree that matches the specified type and elementName
/// </summary>
public static T GetAntecedent<T>(this DependencyObject root, string elementName)
where T : UIElement
{
if (root == null)
{
return null;
}
if (root is T && (root is FrameworkElement)
&& (root as FrameworkElement).Name == elementName)
{
return (T)root;
}
else
{
DependencyObject parent = VisualTreeHelper.GetParent(root);
if (parent == null)
{
return null;
}
else
{
return parent.GetAntecedent<T>(elementName);
}
}
}
}
答案 2 :(得分：0)
关于flobadob的回答： 将控件向上移动47像素是一个非常有趣的解决方案。
如果要保留通常位于功能区菜单上方的行，请移动控件，然后在代码中添加一行。以下内容适用：
std::vector<std::string> strvec;
strvec.emplace_back("abc") //calls string(const char*)
strvec.push_back("abc") //is equivalent to...
strvec.push_back(string("abc")) //which calls string(const char*) then string(string&&)
用背景颜色替换白色填充。另请注意，功能区是网格行1，而后面放置的行是网格行0。