DesignerActionList.GetSortedActionItems 方法

public:
 virtual System::ComponentModel::Design::DesignerActionItemCollection ^ GetSortedActionItems();

public virtual System.ComponentModel.Design.DesignerActionItemCollection GetSortedActionItems();

abstract member GetSortedActionItems : unit -> System.ComponentModel.Design.DesignerActionItemCollection
override this.GetSortedActionItems : unit -> System.ComponentModel.Design.DesignerActionItemCollection

Public Overridable Function GetSortedActionItems () As DesignerActionItemCollection

返回

包含此列表中的项的 DesignerActionItem 数组。

示例

下面的代码示例演示如何创建 DesignerActionItem 对象的集合。

有关此代码示例的完整说明，请参阅 如何：将智能标记附加到 Windows 窗体组件。

public override DesignerActionItemCollection GetSortedActionItems()
{
    DesignerActionItemCollection items = new DesignerActionItemCollection();

    //Define static section header entries.
    items.Add(new DesignerActionHeaderItem("Appearance"));
    items.Add(new DesignerActionHeaderItem("Information"));

    //Boolean property for locking color selections.
    items.Add(new DesignerActionPropertyItem("LockColors",
                     "Lock Colors", "Appearance",
                     "Locks the color properties."));
    if (!LockColors)
    {
        items.Add(new DesignerActionPropertyItem("BackColor",
                         "Back Color", "Appearance",
                         "Selects the background color."));
        items.Add(new DesignerActionPropertyItem("ForeColor",
                         "Fore Color", "Appearance",
                         "Selects the foreground color."));

        //This next method item is also added to the context menu 
        // (as a designer verb).
        items.Add(new DesignerActionMethodItem(this,
                         "InvertColors", "Invert Colors",
                         "Appearance",
                         "Inverts the fore and background colors.",
                          true));
    }
    items.Add(new DesignerActionPropertyItem("Text",
                     "Text String", "Appearance",
                     "Sets the display text."));

    //Create entries for static Information section.
    StringBuilder location = new StringBuilder("Location: ");
    location.Append(colLabel.Location);
    StringBuilder size = new StringBuilder("Size: ");
    size.Append(colLabel.Size);
    items.Add(new DesignerActionTextItem(location.ToString(),
                     "Information"));
    items.Add(new DesignerActionTextItem(size.ToString(),
                     "Information"));

    return items;
}

Public Overrides Function GetSortedActionItems() _
As DesignerActionItemCollection
    Dim items As New DesignerActionItemCollection()

    'Define static section header entries.
    items.Add(New DesignerActionHeaderItem("Appearance"))
    items.Add(New DesignerActionHeaderItem("Information"))

    'Boolean property for locking color selections.
    items.Add(New DesignerActionPropertyItem( _
    "LockColors", _
    "Lock Colors", _
    "Appearance", _
    "Locks the color properties."))

    If Not LockColors Then
        items.Add( _
        New DesignerActionPropertyItem( _
        "BackColor", _
        "Back Color", _
        "Appearance", _
        "Selects the background color."))

        items.Add( _
        New DesignerActionPropertyItem( _
        "ForeColor", _
        "Fore Color", _
        "Appearance", _
        "Selects the foreground color."))

        'This next method item is also added to the context menu 
        ' (as a designer verb).
        items.Add( _
        New DesignerActionMethodItem( _
        Me, _
        "InvertColors", _
        "Invert Colors", _
        "Appearance", _
        "Inverts the fore and background colors.", _
        True))
    End If
    items.Add( _
    New DesignerActionPropertyItem( _
    "Text", _
    "Text String", _
    "Appearance", _
    "Sets the display text."))

    'Create entries for static Information section.
    Dim location As New StringBuilder("Location: ")
    location.Append(colLabel.Location)
    Dim size As New StringBuilder("Size: ")
    size.Append(colLabel.Size)

    items.Add( _
    New DesignerActionTextItem( _
    location.ToString(), _
    "Information"))

    items.Add( _
    New DesignerActionTextItem( _
    size.ToString(), _
    "Information"))

    Return items
End Function

注解

实现 virtualGetSortedActionItems 方法以预期显示顺序返回从 DesignerActionItem 类派生的对象集合。 这些项可以是以下特定类型。

对于每个 DesignerActionMethodItem 和 DesignerActionPropertyItem，必须将相应的方法或属性添加到从 DesignerActionList 类派生的程序员提供的类。 每个方法和属性项都显示为活动条目;通过用户界面（UI）与其交互分别调用相应的方法或属性。

属性项具有特殊的面板项接口，用于显示和操作相应的属性值。 有关详细信息，请参阅 DesignerActionPropertyItem 类。

返回数组中项的顺序反映了它们将显示在面板中的顺序。 这些项根据 Category 属性分组，使用以下规则：

• 遇到第一项的类别表示第一组的开头。 只要每个成功项都属于同一类别，该组就继续。 当遇到其他类别的项时，将创建一个新组，并将该项放入其中。

• 如果某个项的类型与当前组不同，但已使用该类别，则该项将置于匹配的现有类别中。

• 如果某个项目没有类别，则会将其放置在面板末尾的杂项组中。 此组还包含其 AllowAssociate 属性设置为 false的项。

首次创建面板时会调用 GetSortedActionItems 方法。 必须调用 Refresh 方法来更新面板中显示的项列表。

适用于

另请参阅

• DesignerActionItem
• Category
• AllowAssociate
• PropertyDescriptor