ActivityDesigner.Verbs 属性

定义

命名空间:

System.Workflow.ComponentModel.Design

程序集:

System.Workflow.ComponentModel.dll

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.ActivityDesignerVerbCollection

Protected Overridable ReadOnly Property Verbs As ActivityDesignerVerbCollection

属性值

ActivityDesignerVerbCollection

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。