WorkflowView.RootDesigner Property


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Gets or sets the root designer for the WorkflowView.

Namespace:   System.Workflow.ComponentModel.Design
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

Public Property RootDesigner As ActivityDesigner

The root designer of the workflow is the designer associated with the design surface of the workflow. It contains all child designers, and subsequently all activities in the workflow.

The following example shows how to retrieve the RootDesigner of a WorkflowView object. The workflowPanel field contains a method named GetWorkflowView that returns the active WorkflowView instance. The RootDesigner is then cast to a SequentialWorkflowRootDesigner before any action is taken on it.

This code example is part of the Basic DesignerHosting SDK Sample from the DesignerShell.cs file. For more information, see Basic Designer Hosting Sample.

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
        Dim resultBox As DialogResult
        resultBox = MessageBox.Show("This sample supports adding a code activity only in workflow view")
    End If
End Sub

.NET Framework
Available since 3.0
Return to top