WorkflowView.RootDesigner 属性

定义

命名空间:

System.Workflow.ComponentModel.Design

程序集:

System.Workflow.ComponentModel.dll

获取或设置 WorkflowView 的根设计器。

public:
 property System::Workflow::ComponentModel::Design::ActivityDesigner ^ RootDesigner { System::Workflow::ComponentModel::Design::ActivityDesigner ^ get(); void set(System::Workflow::ComponentModel::Design::ActivityDesigner ^ value); };

public System.Workflow.ComponentModel.Design.ActivityDesigner RootDesigner { get; set; }

member this.RootDesigner : System.Workflow.ComponentModel.Design.ActivityDesigner with get, set

Public Property RootDesigner As ActivityDesigner

属性值

ActivityDesigner

与 ActivityDesigner 关联的 WorkflowView。

示例

下面的示例演示如何检索 WorkflowView 对象的 RootDesigner。 workflowPanel 字段包含一个名为 GetWorkflowView 的方法，该方法返回活动的 WorkflowView 实例。 然后，在对 RootDesigner 进行任何操作前将其转换为 SequentialWorkflowRootDesigner。

此代码示例摘自 DesignerShell.cs 文件中的基本 DesignerHosting SDK 示例。 有关详细信息，请参阅 基本设计器托管示例。

private void addButton_Click(object sender, EventArgs e)
{
    SequentialWorkflowRootDesigner rootDesigner = this.workflowPanel.GetWorkflowView().RootDesigner as SequentialWorkflowRootDesigner;
    int viewId = rootDesigner.ActiveView.ViewId;
    if (viewId == 1)
    {
        this.workflowPanel.OnCodeActivityAdded();
    }
    else
    {
        DialogResult resultBox = MessageBox.Show("This sample supports adding a code activity only in workflow view");
    }
}

Private Sub addButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addButton.Click
    Dim viewId As Integer
    Dim rootDesigner As SequentialWorkflowRootDesigner
    rootDesigner = Me.workflowPanel.GetWorkflowView().RootDesigner
    viewId = rootDesigner.ActiveView.ViewId
    If viewId = 1 Then
        Me.workflowPanel.OnCodeActivityAdded()
    Else
        Dim resultBox As DialogResult
        resultBox = MessageBox.Show("This sample supports adding a code activity only in workflow view")
    End If
End Sub

注解

工作流的根设计器是与工作流的设计图面关联的设计器。 它包含所有子设计器，以及随后工作流中所有的活动。