S
shapper
Hello,
I am having problems with Collapsible Panel Extender on my web site
and always getting an error:
Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: child
Well, I tried everything to solve this and no success. Is this another
AJAX Control Toolkit Bug?
I created a sample page. Could someone please try it out and provide
me some feedback on this?
ASPX Code:
<%@ Page Language="VB" AutoEventWireup="false"
CodeFile="Default2.aspx.vb" Inherits="Default2" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp
laceHolder ID="ph" runat="server"></asplaceHolder>
</form>
</body>
</html>
ASPX VB:NET Code:
Partial Class Default2
Inherits System.Web.UI.Page
Protected WithEvents cpeOptions As CollapsiblePanelExtender
Protected WithEvents lHeader As New Label
Protected WithEvents lOptions As New Label
Protected WithEvents pHeader As New Panel
Protected WithEvents pOptions As New Panel
Protected Sub Page_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles Me.Init
With ph.Controls
.Add(pHeader)
.Add(pOptions)
.Add(cpeOptions)
End With
pHeader.Controls.Add(lHeader)
pOptions.Controls.Add(lOptions)
End Sub ' Page_Init
Protected Sub cpeOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles cpeOptions.Init
With cpeOptions
.CollapseControlID = "pOptions"
.ExpandControlID = "pOptions"
.ID = "cpeOptions"
.TargetControlID = "pHeader"
End With
End Sub ' cpeOptions_Init
Private Sub pHeader_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles pHeader.Init
With pHeader
.ID = "pHeader"
.Width = Unit.Pixel(600)
End With
End Sub ' pHeader_Init
Protected Sub pOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles pOptions.Init
With pOptions
.ID = "pOptions"
.Width = Unit.Pixel(600)
End With
End Sub ' pOptions_Init
Private Sub lHeader_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles lHeader.Init
' Define lHeader properties
With lHeader
.ID = "lHeader"
.Text = "Header Text"
End With
End Sub ' lHeader_Init
Private Sub lOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles lOptions.Init
' Define lOptions properties
With lOptions
.ID = "lOptions"
.Text = "Options Panel Text. This is some sample text"
End With
End Sub ' lOptions_Init
End Class
Thanks,
Miguel
I am having problems with Collapsible Panel Extender on my web site
and always getting an error:
Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: child
Well, I tried everything to solve this and no success. Is this another
AJAX Control Toolkit Bug?
I created a sample page. Could someone please try it out and provide
me some feedback on this?
ASPX Code:
<%@ Page Language="VB" AutoEventWireup="false"
CodeFile="Default2.aspx.vb" Inherits="Default2" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp
laceHolder ID="ph" runat="server"></asplaceHolder></form>
</body>
</html>
ASPX VB:NET Code:
Partial Class Default2
Inherits System.Web.UI.Page
Protected WithEvents cpeOptions As CollapsiblePanelExtender
Protected WithEvents lHeader As New Label
Protected WithEvents lOptions As New Label
Protected WithEvents pHeader As New Panel
Protected WithEvents pOptions As New Panel
Protected Sub Page_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles Me.Init
With ph.Controls
.Add(pHeader)
.Add(pOptions)
.Add(cpeOptions)
End With
pHeader.Controls.Add(lHeader)
pOptions.Controls.Add(lOptions)
End Sub ' Page_Init
Protected Sub cpeOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles cpeOptions.Init
With cpeOptions
.CollapseControlID = "pOptions"
.ExpandControlID = "pOptions"
.ID = "cpeOptions"
.TargetControlID = "pHeader"
End With
End Sub ' cpeOptions_Init
Private Sub pHeader_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles pHeader.Init
With pHeader
.ID = "pHeader"
.Width = Unit.Pixel(600)
End With
End Sub ' pHeader_Init
Protected Sub pOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles pOptions.Init
With pOptions
.ID = "pOptions"
.Width = Unit.Pixel(600)
End With
End Sub ' pOptions_Init
Private Sub lHeader_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles lHeader.Init
' Define lHeader properties
With lHeader
.ID = "lHeader"
.Text = "Header Text"
End With
End Sub ' lHeader_Init
Private Sub lOptions_Init(ByVal sender As Object, ByVal e As
EventArgs) Handles lOptions.Init
' Define lOptions properties
With lOptions
.ID = "lOptions"
.Text = "Options Panel Text. This is some sample text"
End With
End Sub ' lOptions_Init
End Class
Thanks,
Miguel