Property is empty. Why?

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  • shapper
    #1

    Property is empty. Why?

    Hello,

    I am creating a custom control, named Form, which inherits from
    CompositeContro l.

    I am adding child custom controls, named Section, to the Form through
    the following property:

    Private _Sections As New List(Of FormSection)
    Public Property Sections() As List(Of FormSection)
    Get
    If _Sections Is Nothing Then
    _Sections = New List(Of FormSection)
    End If
    Return _Sections
    End Get
    Set(ByVal value As List(Of FormSection))
    _Sections = value
    End Set
    End Property ' Sections

    Then I build my control as follows:

    Protected Overrides Sub CreateChildCont rols()
    For Each section As FormSection In Me.Sections
    MyBase.Controls .Add(section)
    Next ' section
    MyBase.CreateCh ildControls()
    End Sub

    However, in OnBubbleEvent, which I am overriding, Me.Sections count 0
    while Me.Controls count 4, the number of controls I added:

    Protected Overrides Function OnBubbleEvent(B yVal source As Object,
    ByVal e As EventArgs) As Boolean
    Dim c As ControlCollecti on = Me.Controls
    Dim s As List(Of FormSection) = Me.Sections
    End sub

    Why?

    I was using a Loop with Me.Sections and it was not working and now I
    found out why.

    What am I doing wrong?

    Thanks,

    Miguel
    Tags: None
    • bruce barker
      #2
      Re: Property is empty. Why?

      when do you ever add a section to the control? do you do it on postback?

      -- bruce (sqlwork.com)

      shapper wrote:
      Hello,
      >
      I am creating a custom control, named Form, which inherits from
      CompositeContro l.
      >
      I am adding child custom controls, named Section, to the Form through
      the following property:
      >
      Private _Sections As New List(Of FormSection)
      Public Property Sections() As List(Of FormSection)
      Get
      If _Sections Is Nothing Then
      _Sections = New List(Of FormSection)
      End If
      Return _Sections
      End Get
      Set(ByVal value As List(Of FormSection))
      _Sections = value
      End Set
      End Property ' Sections
      >
      Then I build my control as follows:
      >
      Protected Overrides Sub CreateChildCont rols()
      For Each section As FormSection In Me.Sections
      MyBase.Controls .Add(section)
      Next ' section
      MyBase.CreateCh ildControls()
      End Sub
      >
      However, in OnBubbleEvent, which I am overriding, Me.Sections count 0
      while Me.Controls count 4, the number of controls I added:
      >
      Protected Overrides Function OnBubbleEvent(B yVal source As Object,
      ByVal e As EventArgs) As Boolean
      Dim c As ControlCollecti on = Me.Controls
      Dim s As List(Of FormSection) = Me.Sections
      End sub
      >
      Why?
      >
      I was using a Loop with Me.Sections and it was not working and now I
      found out why.
      >
      What am I doing wrong?
      >
      Thanks,
      >
      Miguel

        Comment

        • shapper
          #3
          Re: Property is empty. Why?

          On Feb 23, 7:43 pm, bruce barker <nos...@nospam. comwrote:
          when do you ever add a section to the control? do you do it on postback?
          >
          -- bruce (sqlwork.com)
          >
          shapper wrote:
          Hello,
          >
          I am creating a custom control, named Form, which inherits from
          CompositeContro l.
          >
          I am adding child custom controls, named Section, to the Form through
          the following property:
          >
          Private _Sections As New List(Of FormSection)
          Public Property Sections() As List(Of FormSection)
          Get
          If _Sections Is Nothing Then
          _Sections = New List(Of FormSection)
          End If
          Return _Sections
          End Get
          Set(ByVal value As List(Of FormSection))
          _Sections = value
          End Set
          End Property ' Sections
          >
          Then I build my control as follows:
          >
          Protected Overrides Sub CreateChildCont rols()
          For Each section As FormSection In Me.Sections
          MyBase.Controls .Add(section)
          Next ' section
          MyBase.CreateCh ildControls()
          End Sub
          >
          However, in OnBubbleEvent, which I am overriding, Me.Sections count 0
          while Me.Controls count 4, the number of controls I added:
          >
          Protected Overrides Function OnBubbleEvent(B yVal source As Object,
          ByVal e As EventArgs) As Boolean
          Dim c As ControlCollecti on = Me.Controls
          Dim s As List(Of FormSection) = Me.Sections
          End sub
          >
          Why?
          >
          I was using a Loop with Me.Sections and it was not working and now I
          found out why.
          >
          What am I doing wrong?
          >
          Thanks,
          >
          Miguel
          I do it on Page_Init when I am adding controls to the page.

            Comment

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