CompositeActivityDesigner.Expanded 属性

定义

命名空间:

System.Workflow.ComponentModel.Design

程序集:

System.Workflow.ComponentModel.dll

获取或设置一个值，该值指示 CompositeActivityDesigner 是否展开。

public:
 virtual property bool Expanded { bool get(); void set(bool value); };

public virtual bool Expanded { get; set; }

member this.Expanded : bool with get, set

Public Overridable Property Expanded As Boolean

属性值

Boolean

如果 CompositeActivityDesigner 已展开，则为 true；否则为 false。

示例

下面的代码示例演示如何基于作为参数传递给方法的 Expanded 值设置 Boolean 属性。

此代码示例摘自 ViewHost.cs 文件中的工作流监视器 SDK 示例。 有关详细信息，请参阅 工作流监视器。

internal void Expand(bool expand)
{
    IDesignerHost host = GetService(typeof(IDesignerHost)) as IDesignerHost;
    if (host == null)
        return;

    this.SuspendLayout();

    CompositeActivity root = host.RootComponent as CompositeActivity;
    foreach (Activity activity in root.Activities)
    {
        CompositeActivityDesigner compositeActivityDesigner = host.GetDesigner((IComponent)activity) as CompositeActivityDesigner;
        if (compositeActivityDesigner != null)
        {
            compositeActivityDesigner.Expanded = expand;
        }
    }

    this.ResumeLayout(true);
}

Friend Sub Expand(ByVal expand As Boolean)
    Dim host As IDesignerHost = GetService(GetType(IDesignerHost))
    If host Is Nothing Then
        Return
    End If

    Me.SuspendLayout()

    Dim root As CompositeActivity = host.RootComponent
    Dim activity As Activity
    For Each activity In root.Activities
        Dim compositeActivityDesigner As CompositeActivityDesigner = host.GetDesigner(CType(activity, IComponent))
        If compositeActivityDesigner IsNot Nothing Then
            compositeActivityDesigner.Expanded = expand
        End If
    Next

    Me.ResumeLayout(True)
End Sub

注解

与 OnMouseDown 和 ExpandButtonRectangle 结合使用 Expanded 可确定用户单击 CompositeActivityDesigner 上的展开或折叠按钮时的正确操作。

另请参阅

• 工作流监视器