ControlBuilder.InDesigner Property

 

Returns whether the ControlBuilder is running in the designer.

Namespace:   System.Web.UI
Assembly:  System.Web (in System.Web.dll)

Protected ReadOnly Property InDesigner As Boolean

Property Value

Type: System.Boolean

true if the ControlBuilder is running in the designer; otherwise, false.

The following example uses the InDesigner property when the NeedsTagInnerText method is called. When a control has this builder attached to it, the NeedsTagInnerText method determines whether the control is being accessed at design-time through a designer. The NeedsTagInnerText returns the value of the InDesigner property, and then the SetTagInnerText method is called. If the InDesigner property is set to false, an Exception is thrown. Otherwise, the inner text of the control is returned on the SetTagInnerText call.

<AspNetHostingPermission(SecurityAction.Demand, _
  Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class MyControlControlBuilder
  Inherits ControlBuilder

    Private _innerText As String

    Overrides Public Function NeedsTagInnerText() As Boolean
      Return InDesigner
    End Function

    Overrides Public Sub SetTagInnerText(ByVal text As String)        
       If InDesigner = False
         Throw New System.Exception("The control is not in design mode.")
       Else
         _innerText = text
       End If
    End Sub

End Class

.NET Framework
Available since 1.1
Return to top
Show: