XamlDirect.RemoveFromCollection(IXamlDirectObject, IXamlDirectObject) 方法
定义
重要
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尝试从指定的 IXamlDirectObject 集合中删除值。
public:
virtual bool RemoveFromCollection(IXamlDirectObject ^ xamlDirectObject, IXamlDirectObject ^ value) = RemoveFromCollection;bool RemoveFromCollection(IXamlDirectObject const& xamlDirectObject, IXamlDirectObject const& value);public bool RemoveFromCollection(IXamlDirectObject xamlDirectObject, IXamlDirectObject value);function removeFromCollection(xamlDirectObject, value)Public Function RemoveFromCollection (xamlDirectObject As IXamlDirectObject, value As IXamlDirectObject) As Boolean参数
- xamlDirectObject
- IXamlDirectObject
引用特定的 IXamlDirectObject 集合。
- value
- IXamlDirectObject
引用要从集合中删除的 IXamlDirectObject 值。
返回
Boolean
bool
如果存在值，则为 true。 如果值不存在，则为 false。
示例
以下示例演示如何使用 XamlDirect API 从集合中删除值。
XamlDirect xd = XamlDirect.GetDefault();
IXamlDirectObject relativePanel = xd.CreateInstance(XamlTypeIndex.RelativePanel);
IXamlDirectObject childrenCollection = xd.GetXamlDirectObjectProperty(relativePanel, XamlPropertyIndex.Panel_Children);
IXamlDirectObject button = xd.CreateInstance(XamlTypeIndex.Button);
xd.AddToCollection(childrenCollection, button);
xd.RemoveFromCollection(childrenCollection, button); // Should return true
xd.RemoveFromCollection(childrenCollection, button); // Should return false
XamlDirect^ xd = XamlDirect::GetDefault();
IXamlDirectObject^ relativePanel = xd->CreateInstance(XamlTypeIndex::RelativePanel);
IXamlDirectObject^ childrenCollection = xd->GetXamlDirectObjectProperty(relativePanel, XamlPropertyIndex::Panel_Children);
IXamlDirectObject^ button = xd->CreateInstance(XamlTypeIndex::Button);
xd->AddToCollection(childrenCollection, button);
xd->RemoveFromCollection(childrenCollection, button); // Should return true
xd->RemoveFromCollection(childrenCollection, button); // Should return false