Question

Trying to access a property from the parent page on my user control.

Here’s the start of my default.asp codebehind:

Partial Class _Default
     Inherits System.Web.UI.Page

     Private _selectedID As String = "74251BK3232"

     Public Property SelectedID() As String
          Get
               Return _selectedID 
          End Get
          Set(ByVal value As String)
               _selectedID = value
          End Set
     End Property

Here’s the start of my user control codebehind:

Partial Class ctrlAddAttribute
    Inherits System.Web.UI.UserControl
     Dim selectedID As String = Me.Parent.Page.selectedID()

I’m getting the error “selectedID is not a member of System.Web.UI.Page”

Please adivse!

Answer 1

You could access the property when you cast the Page to your actual implementaion called _Default.

Dim selectedID As String = DirectCast(Me.Page,_Default).selectedID()

But that is not the purpose of a Usercontrol(reusability).
Normally you would give the ID from the Controller(page) to the UserControl.

So define a property in the UserControl and set it from the page.
On this way the UserControl would still work in other pages.