ActivityDesigner.Verbs 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取与设计器关联的谓词的集合。
protected:
virtual property System::Workflow::ComponentModel::Design::ActivityDesignerVerbCollection ^ Verbs { System::Workflow::ComponentModel::Design::ActivityDesignerVerbCollection ^ get(); };protected virtual System.Workflow.ComponentModel.Design.ActivityDesignerVerbCollection Verbs { get; }member this.Verbs : System.Workflow.ComponentModel.Design.ActivityDesignerVerbCollectionProtected Overridable ReadOnly Property Verbs As ActivityDesignerVerbCollection属性值
与设计器关联的谓词的集合。
示例
下面的示例演示如何重写 Verbs 属性以插入 ActivityPreviewDesigner 的自定义谓词操作。 CreateActivityVerbs 创建一个名为 ActivityDesignerVerb 的新 "Add New Parallel Branch"，并将它与名为 OnAddParallelBranch 的事件处理程序关联。 在工作流设计器中单击该谓词时，即会调用该事件处理程序。
private ActivityDesignerVerbCollection verbs = null;
protected override ActivityDesignerVerbCollection Verbs
{
get
{
if (this.verbs == null)
CreateActivityVerbs();
return this.verbs;
}
}
private void CreateActivityVerbs()
{
this.verbs = new ActivityDesignerVerbCollection();
ActivityDesignerVerb addBranchVerb = new ActivityDesignerVerb(this,
DesignerVerbGroup.View, "Add New Parallel Branch", new EventHandler(OnAddParallelBranch));
this.verbs.Clear();
this.verbs.Add(addBranchVerb);
}
protected void OnAddParallelBranch(object sender, EventArgs e)
{
// Code for adding a new branch to the parallel activity goes here
}
Private verbsValue As ActivityDesignerVerbCollection = Nothing
Protected Overrides ReadOnly Property Verbs() As ActivityDesignerVerbCollection
Get
If verbsValue Is Nothing Then
CreateActivityVerbs()
End If
Return Me.verbsValue
End Get
End Property
Private Sub CreateActivityVerbs()
Me.verbsValue = New ActivityDesignerVerbCollection()
Dim addBranchVerb As New ActivityDesignerVerb(Me, DesignerVerbGroup.View, "Add New Parallel Branch", AddressOf OnAddParallelBranch)
Me.verbsValue.Clear()
Me.verbsValue.Add(addBranchVerb)
End Sub
Protected Sub OnAddParallelBranch(ByVal sender As Object, ByVal e As EventArgs)
' Code for adding a new branch to the parallel activity goes here
End Sub
注解
使用 Verbs 方法可确定要显示在上下文菜单中的谓词。