Thread: Dynamically added user control, not getting it's values

Hi guys

I have a aspx page ajax enabled and using update panels, ModalpopupExtenders
and on one of my ModalPopupextenders either one or more user controls are
called up into the displayed panel of the Modalpopup.

It loads only the controls that are assigned, to do this I assign the controls via
the repeaters OnItemDataBound event:

Code:

Protected Sub rpActiveSpecification_OnItemDataBound(ByVal s As Object, ByVal e As RepeaterItemEventArgs)
        If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
            '---------------------------------------
            Dim myForms As Forms = e.Item.DataItem
            Dim pnlActiveSpecificationForms As Panel = e.Item.FindControl("pnlActiveSpecificationForms")


            ViewState("FormsArt") = "".ToString
            ViewState("FormsCarpetRug") = "".ToString
            ViewState("FormsAccessories") = "".ToString
            ViewState("FormsBedding") = "".ToString
            ViewState("FormsCasegoods") = "".ToString
            ViewState("FormsDrapery") = "".ToString
            ViewState("FormsFabric") = "".ToString
            ViewState("FormsLighting") = "".ToString
            ViewState("FormsMirrors") = "".ToString
            ViewState("FormsPillow") = "".ToString
            ViewState("FormsTrims") = "".ToString
            ViewState("FormsUpholstered") = "".ToString
            ViewState("FormsArchitectschedule") = "".ToString

            '---------------------------------------
            Select Case myForms.Name
                Case "Art"
                    FormsArt = CType(LoadControl("~/CustomControls/FormControls/form_art.ascx"), ASP.customcontrols_formcontrols_form_art_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsArt)
                    FormsArt.SpecID = myParams.SpecID
                    ViewState("FormsArt") = "~/CustomControls/FormControls/form_art.ascx".ToString
                Case "Carpet Rug"
                    FormsCarpetRug = CType(LoadControl("~/CustomControls/FormControls/form_carpetrug.ascx"), ASP.customcontrols_formcontrols_form_carpetrug_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsCarpetRug)
                    FormsCarpetRug.SpecID = myParams.SpecID
                    ViewState("FormsCarpetRug") = "~/CustomControls/FormControls/form_carpetrug.ascx".ToString
                Case "Accessories"
                    FormsAccessories = CType(LoadControl("~/CustomControls/FormControls/form_accessories.ascx"), ASP.customcontrols_formcontrols_form_accessories_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsAccessories)
                    FormsAccessories.SpecID = myParams.SpecID
                    ViewState("FormsAccessories") = "~/CustomControls/FormControls/form_accessories.ascx".ToString
                Case "Bedding"
                    FormsBedding = CType(LoadControl("~/CustomControls/FormControls/form_bedding.ascx"), ASP.customcontrols_formcontrols_form_bedding_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsBedding)
                    FormsBedding.SpecID = myParams.SpecID
                    ViewState("FormsBedding") = "~/CustomControls/FormControls/form_bedding.ascx".ToString
                Case "Casegoods"
                    FormsCasegoods = CType(LoadControl("~/CustomControls/FormControls/form_casegoods.ascx"), ASP.customcontrols_formcontrols_form_casegoods_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsCasegoods)
                    FormsCasegoods.SpecID = myParams.SpecID
                    ViewState("FormsCasegoods") = "~/CustomControls/FormControls/form_casegoods.ascx".ToString
                Case "Drapery"
                    FormsDrapery = CType(LoadControl("~/CustomControls/FormControls/form_drapery.ascx"), ASP.customcontrols_formcontrols_form_drapery_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsDrapery)
                    FormsDrapery.SpecID = myParams.SpecID
                    ViewState("FormsDrapery") = "~/CustomControls/FormControls/form_drapery.ascx".ToString
                Case "Fabric"
                    FormsFabric = CType(LoadControl("~/CustomControls/FormControls/form_fabric.ascx"), ASP.customcontrols_formcontrols_form_fabric_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsFabric)
                    FormsFabric.SpecID = myParams.SpecID
                    ViewState("FormsFabric") = "~/CustomControls/FormControls/form_fabric.ascx".ToString
                Case "Lighting"
                    FormsLighting = CType(LoadControl("~/CustomControls/FormControls/form_lighting.ascx"), ASP.customcontrols_formcontrols_form_lighting_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsLighting)
                    FormsLighting.SpecID = myParams.SpecID
                    ViewState("FormsLighting") = "~/CustomControls/FormControls/form_lighting.ascx".ToString
                Case "Mirrors"
                    FormsMirrors = CType(LoadControl("~/CustomControls/FormControls/form_mirrors.ascx"), ASP.customcontrols_formcontrols_form_mirrors_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsMirrors)
                    FormsMirrors.SpecID = myParams.SpecID
                    ViewState("FormsMirrors") = "~/CustomControls/FormControls/form_mirrors.ascx".ToString
                Case "Pillow"
                    FormsPillow = CType(LoadControl("~/CustomControls/FormControls/form_pillow.ascx"), ASP.customcontrols_formcontrols_form_pillow_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsPillow)
                    FormsPillow.SpecID = myParams.SpecID
                    ViewState("FormsPillow") = "~/CustomControls/FormControls/form_pillow.ascx".ToString
                Case "Trims"
                    FormsTrims = CType(LoadControl("~/CustomControls/FormControls/form_trims.ascx"), ASP.customcontrols_formcontrols_form_trims_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsTrims)
                    FormsTrims.SpecID = myParams.SpecID
                    ViewState("FormsTrims") = "~/CustomControls/FormControls/form_trims.ascx".ToString
                Case "Uplholstered"
                    FormsUpholstered = CType(LoadControl("~/CustomControls/FormControls/form_upholstereditems.ascx"), ASP.customcontrols_formcontrols_from_upholstereditems_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsUpholstered)
                    FormsUpholstered.SpecID = myParams.SpecID
                    ViewState("FormsUpholstered") = "~/CustomControls/FormControls/form_upholstereditems.ascx".ToString
                Case "Architectural Schedule"
                    FormsArchitectschedule = CType(LoadControl("~/CustomControls/FormControls/form_architectschedule.ascx"), ASP.customcontrols_formcontrols_form_architectschedule_ascx)
                    pnlActiveSpecificationForms.Controls.Add(FormsArchitectschedule)
                    FormsArchitectschedule.SpecID = myParams.SpecID
                    ViewState("FormsArchitectschedule") = "~/CustomControls/FormControls/form_architectschedule.ascx".ToString
            End Select
        End If
    End Sub

ok so now i have my user control to capture.
when i hit my update button, which resides in the display panel of the
ModalPopup, not in the user control, so when the update button is clicked
I call another sub which reloads the control(this is due to the controls being dynamically added) and calls the update function of that control:

Code:

Public Sub btnActiveSpecificationUpdate_OnClick(ByVal s As Object, ByVal e As EventArgs)
        Dim myButton As Button = s

        '---------------------------------------
        'decalre 
        Dim pnlActiveSpecification As Panel = myButton.Parent

        If CType(ViewState("FormsArt"), String) > "" Then
            FormsArt = CType(LoadControl("~/CustomControls/FormControls/form_art.ascx"), ASP.customcontrols_formcontrols_form_art_ascx)
            FormsArt.Update_Form()
        End If
    End Sub

and here is the update function of the user control:

Code:

Public Sub Update_Form()
        Dim myArt As Art = New Art
        Dim fieldlist As New ArrayList

        '---------------------------------------
        'get all data
        myArt = ArtManager.GetItem(SpecID)

        '---------------------------------------
        'check to see if something has been updated
        If txtArt_material.Text <> myArt.Material Then
            fieldlist.Add("material")
            myArt.Material = txtArt_material.Text
        End If
        If txtArt_colour.Text <> myArt.Colour Then
            fieldlist.Add("colour")
            myArt.Colour = txtArt_colour.Text
        End If
        If txtArt_supplierref.Text <> myArt.SupplierRef Then
            fieldlist.Add("supplierref")
            myArt.SupplierRef = txtArt_supplierref.Text
        End If
        If txtArt_finish.Text <> myArt.Finish Then
            fieldlist.Add("finish")
            myArt.Finish = txtArt_finish.Text
        End If
        If txtArt_width.Text <> myArt.Width Then
            fieldlist.Add("width")
            myArt.Width = txtArt_width.Text
        End If
        If txtArt_height.Text <> myArt.Height Then
            fieldlist.Add("height")
            myArt.Height = txtArt_height.Text
        End If
        If txtArt_framewidth.Text <> myArt.FrameWidth Then
            fieldlist.Add("framewidth")
            myArt.FrameWidth = txtArt_framewidth.Text
        End If
        If txtArt_innerframe.Text <> myArt.InnerFrame Then
            fieldlist.Add("innerframe")
            myArt.InnerFrame = txtArt_innerframe.Text
        End If
        If txtArt_glassthickness.Text <> myArt.GlassThickness Then
            fieldlist.Add("glassthickness")
            myArt.GlassThickness = txtArt_glassthickness.Text
        End If
        If txtArt_hangingrequirements.Text <> myArt.HangingRequirements Then
            fieldlist.Add("hangingrequirements")
            myArt.HangingRequirements = txtArt_hangingrequirements.Text
        End If

        myArt.SpecID = SpecID

        '---------------------------------------
        'check to see if any records need to be updated, if so, update them
        If Not fieldlist.Count = 0 Then
            ArtManager.Update(myArt)
            fieldlist.RemoveRange(0, fieldlist.Count)
        End If
    End Sub

but nothing get's passed, all the input fields from the user control are empty?
any ideas here?

Shem

my problem i have is that i need to recreate the controls in the Page_load
event.

But i need to recreate and add the control to a panel that sits in a Grandchild
repeater:

Code:

<asp:Panel ID="pnlActiveContent" runat="server" CssClass="collapsePanel">
	<asp:Repeater id="rpActiveCategory" runat="server" OnItemDataBound="rpActiveCategory_OnItemDataBound">
		<asp:Panel ID="pnlActiveCategoryContent" runat="server" Visible="false">
			<asp:Repeater id="rpActiveSubCategory" runat="server" OnItemDataBound="rpActiveSubCategory_OnItemDataBound">
				<asp:Panel ID="pnlActiveSubCategoryContent" runat="server" height="100%" CssClass="collapsePanel">
					<asp:Repeater ID="rpActiveSpecs" runat="server" OnItemDataBound="rpActiveSpecs_OnItemDataBound" OnItemCommand="rpActiveSpecs_OnItemCommand">
						<asp:Panel ID="pnlActiveSpecification" runat="server" CssClass="modalPopup" style="display:none;">

'pnlActiveSpecification' is the panel that they must be added to.
'pnlActiveSpecification' is the display panel for a ModalPopupExtender.

any ideas?
Shem

after a lot of research and reading yesterday, I first need to reload the control
before i can get the results, so until i'm able to reload my control, i guess i will
not ever get or retain any values.

I have 12 different user controls, each of these capture diff data.
each subcategory will get either one or more of these user controls assigned
to it, so I can't stick all of them inside my repeater, unless I write a 'If Else'
statement inside my repeater on the aspx page, which i suppose i could do?

currently I am loading the controls in the repeaters OnItemDataBound

Originally Posted by Shem

It loads only the controls that are assigned, to do this I assign the controls via
the repeaters OnItemDataBound event:

And the page loading the controls is also a user control, sitting on a aspx page.