This is a classic issue.
ASP.NET will not persist your dynamically created controls by default, it
will make sure the control-tree at the .aspx will be regenerated but thats
all, no automatic support for your codebehind. They are simply won't be
written to Viewstate tree, and hence corresponding server side control won't
be re-created after a postback.
You may use a helper control like this one instead of the PlaceHolder:
http://www.denisbauer.com/ASPNETControls/DynamicControlsPlaceholder.aspx Gokhan Altinoren
gokhan[RMV_this][at]altinoren[also_RMV_this][dot]com
http://altinoren.com [quoted text, click to view] > Hi ,
> I load dynamically a user control in PlaceHolder with the number of
> fileds
> in db.
> When loading user control there is no problem, if returning field
> number is
> 2 then 2 usr controls load in plcholder.
> But problem is that , after page postback plcholder says that I have
> no
> control,
> For i As Integer = 0 To plcHolderUsrCont.Controls.Count - 1
> kontrol1 = DirectCast(plcHolderUsrCont.Controls(i),
> UrunGrupTeknik)
> Dim a As String = kontrol1.txtvalue
> Next
> I added a reference like below , because usr control loading
> dynamically <%@ Reference Control =
> "../kontroller/UrunGrupTeknik.ascx" %>
>
> I defined a protected variable that's type is my usr control
> Protected urunGrupTeknikTxtLbl As UrunGrupTeknik = New UrunGrupTeknik
>
> and I load user control like that..
>
> For i As Integer = 0 To tdsTeknikDetay.table1.Rows.Count - 1
> thisrowTeknikDetay = tdsTeknikDetay.table1.Rows(i)
> findControlPath = Request.ApplicationPath +
> "/kontroller/UrunGrupTeknik.ascx"
> kontrol1 = Me.LoadControl(findControlPath)
> urunGrupTeknikTxtLbl = DirectCast(kontrol1,
> UrunGrupTeknik)
> urunGrupTeknikTxtLbl.lblValue =
> thisrowTeknikDetay.ACIKLAMA
> kontrol1.ID = i
> plcHolderUsrCont.Controls.Add(kontrol1)
> Next
> plcHolder.controls.Count is set to 0 after postback:(( Have you any
> idea about this problem ?
>
> Thnks....
>
