Member Avatar for fiaolle

Hi
I'm having trouble to access a Parent's property in User Control. I don't know how to access the parent. I saw the example below and tried it:

CType(Me.Page, Search).Prop = VALUE

and the Parent page is called Search.aspx

Partial Class Search

But then I get en error Type 'Search' is not defined.

I have also tried:

Dim p as Page=Me.Parent.Page
p.Prop 'doesn't work

But I can't access the Property in this way either

Please help
Fia

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Member Avatar for kvprajapati

I presume that the parent of usercontrol is a Panel then your code in usercontrol might be,

CType(Me.Parent,Panel).GroupingText="Test"
Edited by kvprajapati because: n/a
Member Avatar for fiaolle

Hi
Thanks for the answer, but no, the User Control is not placed in a panel. And how would I be able to access the panel in the Parent when I even can't access the Parent Page.

Fia

Member Avatar for fiaolle

Hi
I found the solution I added

<%@ Reference Page="~/Search.aspx" %>

in the User Control's ascx file and then I could access the Parent's
Property with

Dim parentPage As Search = CType(Page, search)
parentPage.Prop=VALUE

Thanks for the help
Fia

Member Avatar for fiaolle

:'( Hi again

No, it didn't work when I tried to run the website. Than it gave me the errors
1. The user control is not declared in the parent page
2. The user contol has a circular reference

Please help me

Fia

Member Avatar for kvprajapati

Firstly add a code-file into your project which must be a subclass of System.Web.UI.Page class.

MyPage.vb (in app_code folder)

Public MustInherit Class MyPage
    Inherits System.Web.UI.Page
    Public MustOverride Property MyText() As String
End Class

Code & markup of Usercontrol.

TestControl.ascx

<%@ Control Language="VB" ClassName="TestControl" %>

<script runat="server">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim method As MyPage = CType(Me.Page, MyPage)
        method.MyText = "Hello"
    End Sub
</script>

Webform - Make sure that the .aspx page directive includes Inherits="MyPage" attribute.

TestPage.aspx

<%@ Page Language="VB" Inherits="MyPage" %>

<%@ Register src="TestControl.ascx" tagname="TestControl" tagprefix="uc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    Public Overrides Property MyText() As String
        Get
            Return TextBox1.Text
        End Get
        Set(ByVal value As String)
            TextBox1.Text = value
        End Set
    End Property
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <uc1:TestControl ID="TestControl1" runat="server" />
    
    </div>
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    </form>
</body>
</html>
Member Avatar for fiaolle

Hi

Thank's for the answer, but how will I be able to use the other code in the Parent Page if I inherit the Parent to MyPage.

I'am a new to ASP.Net. Sorry

Fia

Member Avatar for 4advanced

use this funtion to find the control

Private Shared Function FindControlRecursive(ByVal Root As Control, ByVal Id As String) As Control
        If Root.ID = Id Then
            Return Root
        End If


        For Each Ctl As Control In Root.Controls
            Dim FoundCtl As Control = FindControlRecursive(Ctl, Id)
            If FoundCtl IsNot Nothing Then
                Return FoundCtl
            End If
        Next
        Return Nothing
    End Function

Find the control with the next statement

Dim lbl As Label = FindControlRecursive(Page.Master, "yourControlID")
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