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From: Rory Becker on 10 Jul 2008 13:14
The following code is the code behind of a blank page (With a scriptmanager)
on which I'm trying to simulate a problem I'm having elsewhere in a larger
app.

The app is supposed, in this case, to dynamically create a textbox and a
MaskEditExtender and associate the 2 together.

I'm obviously doing something wrong as I'm getting a exception.
-------------------------------------------------------------
[NullReferenceException: Object reference not set to an instance of an object.]
AjaxControlToolkit.MaskedEditExtender.OnLoad(EventArgs e) +168
System.Web.UI.Control.LoadRecursive() +65
System.Web.UI.Control.LoadRecursive() +190
System.Web.UI.Control.LoadRecursive() +190
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint) +2603
-------------------------------------------------------------


Any Ideas?

--
Rory

-------------------------------------------------------------
Public Partial Class ControlTesting
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Me.Load
Controls.Add(New SpecialControl)
End Sub

End Class
Public Class SpecialControl
Inherits WebControl
Implements INamingContainer

Private Sub SpecialControl_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Me.Load
Dim ControlAsTextBox As New TextBox
ControlAsTextBox.ID = "TextBox"
ControlAsTextBox.CssClass = "textbox"
ControlAsTextBox.AutoCompleteType = AutoCompleteType.Disabled
Dim Mask As String = "LL-#####"
If Mask <> String.Empty Then
Dim MyExtender As New AjaxControlToolkit.MaskedEditExtender
MyExtender.Mask = Mask
MyExtender.TargetControlID = ControlAsTextBox.ID
MyExtender.MessageValidatorTip = True
MyExtender.OnFocusCssClass = "MaskedEditFocus"
MyExtender.OnInvalidCssClass = "MaskedEditError"
MyExtender.MaskType = AjaxControlToolkit.MaskedEditType.None
MyExtender.InputDirection = AjaxControlToolkit.MaskedEditInputDirection.LeftToRight
MyExtender.AcceptNegative = AjaxControlToolkit.MaskedEditShowSymbol.None
MyExtender.DisplayMoney = AjaxControlToolkit.MaskedEditShowSymbol.None
MyExtender.ErrorTooltipEnabled = True
Controls.Add(MyExtender)
End If
End Class
-------------------------------------------------------------


From: Patrice on 10 Jul 2008 13:18
Hello,

What if you add the TextBox to the "Controls" collection ?

--
Patrice


From: Rory Becker on 10 Jul 2008 14:13
Hello Patrice" http:www.chez.com/scribe/,

> What if you add the TextBox to the "Controls" collection ?
>

Doh! well I definitly needed to do that.

However now I'm getting something else.

I'm guessing it's because the textbox is not in the page hierarchy (only
added thus far to the specialcontrol) when 2 controls are paired up. but
I don't see how it could be as the specialcontrol has not yet been added
to the page


-------------------------------------------------------------
HttpException (0x80004005): Control 'ctl02_TextBox' of type 'TextBox' must
be placed inside a form tag with runat=server.]
System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +2049759
System.Web.UI.WebControls.TextBox.AddAttributesToRender(HtmlTextWriter
writer) +49
System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer)
+17
System.Web.UI.WebControls.TextBox.Render(HtmlTextWriter writer) +17
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter
adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter
adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection
children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)
+7
System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +29
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter
adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter
adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection
children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.Page.Render(HtmlTextWriter writer) +26
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter
adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter
adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint) +2558

-------------------------------------------------------------


From: George on 10 Jul 2008 14:42
Well, the error says it all...read it.
" Control 'ctl02_TextBox' of type 'TextBox' must be placed inside a form tag
with runat=server"

I would highlight word "must" here....

George.


"Rory Becker" <rorybecker(a)newsgroup.nospam> wrote in message
news:3af103471910e8cab0d8294eaa78(a)news.microsoft.com...
> Hello Patrice" http:www.chez.com/scribe/,
>
>> What if you add the TextBox to the "Controls" collection ?
>>
>
> Doh! well I definitly needed to do that.
>
> However now I'm getting something else.
>
> I'm guessing it's because the textbox is not in the page hierarchy (only
> added thus far to the specialcontrol) when 2 controls are paired up. but I
> don't see how it could be as the specialcontrol has not yet been added to
> the page
>
>
> -------------------------------------------------------------
> HttpException (0x80004005): Control 'ctl02_TextBox' of type 'TextBox' must
> be placed inside a form tag with runat=server.]
> System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +2049759
> System.Web.UI.WebControls.TextBox.AddAttributesToRender(HtmlTextWriter
> writer) +49
> System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter
> writer) +17
> System.Web.UI.WebControls.TextBox.Render(HtmlTextWriter writer) +17
> System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer,
> ControlAdapter adapter) +25
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer,
> ControlAdapter adapter) +121
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
> System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer,
> ICollection children) +199
> System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
> System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter
> writer) +7
> System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +29
> System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer,
> ControlAdapter adapter) +25
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer,
> ControlAdapter adapter) +121
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
> System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer,
> ICollection children) +199
> System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
> System.Web.UI.Page.Render(HtmlTextWriter writer) +26
> System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer,
> ControlAdapter adapter) +25
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer,
> ControlAdapter adapter) +121
> System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
> System.Web.UI.Page.ProcessRequestMain(Boolean
> includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2558
>
> -------------------------------------------------------------
>
>

From: Rory Becker on 10 Jul 2008 15:17
Hello george,

> Well, the error says it all...read it.
> " Control 'ctl02_TextBox' of type 'TextBox' must be placed inside a
> form tag
> with runat=server"
> I would highlight word "must" here....
>
> George.
>


I was about to reply that "as far as I knew" the textbox was in the form.
After all .. what else have I been adding it to?

Then I thought about that question for a moment. For anyone else who might
have come across this....

-------------------------------------------------------------
Controls.Add(SomeControl)
-------------------------------------------------------------
....is not the same as...
-------------------------------------------------------------
Form1.Controls.Add(SomeControl)
-------------------------------------------------------------

Thanks for the tip George :)

Now all I have to do is to sort out that AJaxPro conflict.. ( thats for another
post)

Thanks again

--
Rory



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