WorkflowView.EnsureVisible Method (Object)

 

Ensures that the Object passed is visible, expanding parent objects and scrolling the WorkflowView as necessary.

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

Public Sub EnsureVisible (
	selectableObject As Object
)

Parameters

selectableObject
Type: System.Object

The object to make visible.

Exception Condition
ArgumentNullException

selectableObject is a null reference (Nothing in Visual Basic).

Use EnsureVisible when you are working with an object in the workflow that requires user interface cues. EnsureVisible will expand parent objects and scroll the WorkflowView as necessary to make the object visible on the designer.

The following example uses the GetService method of the WorkflowView object to return an ISelectionService interface. If the service exists, EnsureVisible is called passing the currently selected activity using the PrimarySelection property of the ISelectionService object.

Public Sub FindSelection()
    Dim selectionService As ISelectionService
    selectionService = CType(CType(Me.workflowView, IServiceProvider).GetService(GetType(ISelectionService)), ISelectionService)

    If selectionService IsNot Nothing Then
        Me.workflowView.EnsureVisible(selectionService.PrimarySelection)
    End If
End Sub

.NET Framework
Available since 3.0
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