Access dynamically created controls

[T-Bone]

Hi there,
I read a lot about this issue but still got no clear answer that
solves my problem.

I've a Web User Control with a placeholder called phProperties.
I create a form with a number of Textboxes dynamically from values in
a database and add them to the phProperties placeholder. The number of
Textboxes depends on the template the user clicked. Each template has
his own number of properties.
I store the controlnames in a hashtable called 'templatepropertynames'

After the user clicks a button, I want to store the values from the
textboxes in a database.

The problem is that I can't get to the controls in the Button_click
event.
I tried with FindControl but with no result.
When debugging the value of myEnumerator.value in the button_click
event is correct which is the name of the control but:
The 'value' of
phProperties.FindControl(myEnumerator.value) is always 'nothing'
in the button_click event where I expected a reference to the
textbox.


How can I retreive the values from the Textboxes in the Button_click
event.

Here my code:

Private Sub CreatePropertyFields(ByVal templateid As Integer)
Dim getproperties As New SqlCommand("select * from
TemplateProperties where templateID=" & templateid, myConnection)
Dim propertyreader As SqlDataReader
myConnection.Open()
propertyreader = getproperties.ExecuteReader
Dim templatepropertynames As New Hashtable

While propertyreader.Read
templatepropertynames(propertyreader.Item("propert yID")) =
propertyreader.Item("propertyName")
'create label for textbox
Dim propertylbl As New Label
propertylbl.Text =
propertyreader.Item("propertyName").trim
propertylbl.Width = Unit.Pixel(200)
Me.phProperties.Controls.Add(propertylbl)

'create the Textbox
Dim newcontrol As New TextBox
newcontrol.ID =
propertyreader.Item("propertyName").trim
Me.phProperties.Controls.Add(newcontrol)

'create seperator
Dim seperatorlbl As New Label
seperatorlbl.Text = "<br>"
Me.phProperties.Controls.Add(seperatorlbl)

End While
Session("propertynames") = templatepropertynames
myConnection.Close()
End Sub


Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnNaar4.Click
Dim templatepropertynames As New Hashtable
templatepropertynames = Session("propertynames")
Dim myEnumerator As IDictionaryEnumerator =
templatepropertynames.GetEnumerator()
While myEnumerator.MoveNext()
Dim Textboxvalue As String =
CType(phProperties.FindControl(myEnumerator.value) , Textbox).Text
'insert textboxvalue in the database here
End While

End Sub

Thanks in advance
Peter

[John Saunders]

"T-Bone" <sub@pox.nl> wrote in message
news:4378c773.0407020120.49a9b8c0@posting.google.c om...

> Hi there,
> I read a lot about this issue but still got no clear answer that
> solves my problem.
>
> I've a Web User Control with a placeholder called phProperties.
> I create a form with a number of Textboxes dynamically from values in
> a database and add them to the phProperties placeholder. The number of
> Textboxes depends on the template the user clicked. Each template has
> his own number of properties.
> I store the controlnames in a hashtable called 'templatepropertynames'
>
> After the user clicks a button, I want to store the values from the
> textboxes in a database.

Dynamically added controls need to be added on every request, and in the
exact same order.
--
John Saunders
johnwsaundersiii at hotmail

[T-Bone]

"John Saunders" <johnwsaundersiii@notcoldmail.com> wrote in message news:<emsDZRFYEHA.712@TK2MSFTNGP11.phx.gbl>...

> "T-Bone" <sub@pox.nl> wrote in message
> news:4378c773.0407020120.49a9b8c0@posting.google.c om...

> > Hi there,
> > I read a lot about this issue but still got no clear answer that
> > solves my problem.
> >
> > I've a Web User Control with a placeholder called phProperties.
> > I create a form with a number of Textboxes dynamically from values in
> > a database and add them to the phProperties placeholder. The number of
> > Textboxes depends on the template the user clicked. Each template has
> > his own number of properties.
> > I store the controlnames in a hashtable called 'templatepropertynames'
> >
> > After the user clicks a button, I want to store the values from the
> > textboxes in a database.

>
> Dynamically added controls need to be added on every request, and in the
> exact same order.

OK, but what about the values. If I create the controls on every page
request the values will be empty every time the page is loaded and I
never can get to the submitted values. or not?

[P K]

Ok, but what about the values. If I create the values on every page
request, the entered values in the Textboxes before the button click
will be gone. Or not?


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[T-Bone]

"John Saunders" <johnwsaundersiii@notcoldmail.com> wrote in message news:<emsDZRFYEHA.712@TK2MSFTNGP11.phx.gbl>...

> "T-Bone" <sub@pox.nl> wrote in message
> news:4378c773.0407020120.49a9b8c0@posting.google.c om...

> > Hi there,
> > I read a lot about this issue but still got no clear answer that
> > solves my problem.
> >
> > I've a Web User Control with a placeholder called phProperties.
> > I create a form with a number of Textboxes dynamically from values in
> > a database and add them to the phProperties placeholder. The number of
> > Textboxes depends on the template the user clicked. Each template has
> > his own number of properties.
> > I store the controlnames in a hashtable called 'templatepropertynames'
> >
> > After the user clicks a button, I want to store the values from the
> > textboxes in a database.

>
> Dynamically added controls need to be added on every request, and in the
> exact same order.

Ok, but what about the values in the Textbox. If I create the controls
on every page_load the values will be empty every time. How can I get
to the submitted values?

[John Saunders]

"T-Bone" <sub@pox.nl> wrote in message
news:4378c773.0407042304.289ab5bf@posting.google.c om...

> "John Saunders" <johnwsaundersiii@notcoldmail.com> wrote in message

news:<emsDZRFYEHA.712@TK2MSFTNGP11.phx.gbl>...

> > "T-Bone" <sub@pox.nl> wrote in message
> > news:4378c773.0407020120.49a9b8c0@posting.google.c om...

> > > Hi there,
> > > I read a lot about this issue but still got no clear answer that
> > > solves my problem.
> > >
> > > I've a Web User Control with a placeholder called phProperties.
> > > I create a form with a number of Textboxes dynamically from values in
> > > a database and add them to the phProperties placeholder. The number of
> > > Textboxes depends on the template the user clicked. Each template has
> > > his own number of properties.
> > > I store the controlnames in a hashtable called 'templatepropertynames'
> > >
> > > After the user clicks a button, I want to store the values from the
> > > textboxes in a database.

> >
> > Dynamically added controls need to be added on every request, and in the
> > exact same order.

>
> Ok, but what about the values in the Textbox. If I create the controls
> on every page_load the values will be empty every time. How can I get
> to the submitted values?

ViewState will take care of that for you.
--
John Saunders
johnwsaundersiii at hotmail