Adding ajax extenders to custom controls added at runtime within a wizard control

[robbp]

Hi guys,

I have a problem where i have a web page (inheriting from a master page which contains the scriptmanager control) containing a dynamically created wizard control. At runtime i add the steps from custom controls i have created, basically simulating content etc. Now - when i try to add ajax extenders to the custom controls it errors out on load and says that the controls havent been registered - have scoured the web but cant seem to find any info re what the cause/solution is - help please.

[Frinavale]

Please post the error details.

[robbp]

Thanks for the reply - i get the below error:

Offending URL: http://localhost:1583/Secured Lending Portal/Wizard/WizardPage.aspx?Action=AmendCreateCustomerTest&Dis playSteps=1
Source: System.Web.Extensions
Message: Extender control 'txt_PostalAddressLine1_TextBoxWatermarkExtender' is not a registered extender control. Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors(). Parameter name: extenderControl
Stack trace: at System.Web.UI.ScriptControlManager.RegisterScriptD escriptors(IExtenderControl extenderControl) at System.Web.UI.ScriptManager.RegisterScriptDescript ors(IExtenderControl extenderControl) at System.Web.UI.ExtenderControl.Render(HtmlTextWrite r writer) at AjaxControlToolkit.ExtenderControlBase.Render(Html TextWriter writer) at System.Web.UI.Control.RenderControlInternal(HtmlTe xtWriter writer, ControlAdapter adapter) at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) at System.Web.UI.Control.RenderControl(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlT extWriter writer, ICollection children) at System.Web.UI.Control.RenderChildren(HtmlTextWrite r...........................................

The only things that would really affect the config ive listed in the below tags, for the rest ive provided a trail of code as it would move between the artefacts - would really appreciate some or other resolution - really frustrating me.

WEB.CONFIG

<configuration>
 
    "system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      "scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
        "scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication">

WIZARD CONTAINER MARKUP

"C#" AutoEventWireup="true" CodeFile="WizardPage.aspx.cs" Inherits="SBSA.VAF.UI.Shell.Views.WizardPage" Title="WizardPage" MasterPageFile="~/Shared/DefaultMaster.master" %>
 
"Microsoft.Practices.Web.UI.WebControls" namespace="Microsoft.Practices.Web.UI.WebControls" tagprefix="asp" %>
"../Controls/UI/Navigation/StepBar.ascx" tagname="StepBar" tagprefix="uc1" %>
"System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>
"~/Controls/UI/Functions/ErrorDisplay.ascx" tagname="ErrorDisplay" tagprefix="uc2" %>
"AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %>
 
"content" ContentPlaceHolderID="DefaultContent" Runat="Server">
    "text/css" rel ="Stylesheet" href="Wizard.css"  >
"imgStage" runat="server" Height="70px" Width="700px">
 
            "PlaceHolderStepBar" runat="server">
            "WizardControl" runat="server">
            "PlaceHolder1" runat="server">
        "ObjectContainerDataSourceWizard" runat="server">
 

WIZARD CONTAINER CODE BEHIND

namespace SBSA.VAF.UI.Shell.Views
{
 
    public partial class WizardPage : Microsoft.Practices.CompositeWeb.Web.UI.Page, IWizardPageView,INavigationService
    {
        public string workflow;
        private PageFlowObject.PageFlowIndex pageFlowIndex = null;
        private PageFlow pageFlow = new PageFlow();
        private INavigationService _navigationService = new WebNavigationService();
 
        private WizardPagePresenter _presenter;
        //TO DO: REMOVE. PLACED FOR TRYING TO FIND A NIGGLY PAGE ERROR/
        protected override void OnError(EventArgs e)
        {
 
            HttpContext ctx = HttpContext.Current;
 
            Exception exception = ctx.Server.GetLastError();
 
            string errorInfo =
               "<br>Offending URL: " + ctx.Request.Url.ToString() +
               "<br>Source: " + exception.Source +
               "<br>Message: " + exception.Message +
               "<br>Stack trace: " + exception.StackTrace;
 
            ctx.Response.Write(errorInfo);
 
            // --------------------------------------------------
            // Clear the error 
            // --------------------------------------------------
            ctx.Server.ClearError();
 
            base.OnError(e);
        }
        protected void Page_PreInit(object sender, EventArgs e)
        {
 
        }
        protected void Page_Load(object sender, EventArgs e)
        {
 
            WizardControl.NavigationButtonStyle.CssClass = "ButtonWizard";
            WizardControl.FinishCompleteButtonText = "Next";
            WizardControl.DisplaySideBar = false;
            WizardControl.NextButtonClick += new WizardNavigationEventHandler(WizardMain_NextButtonClick);
            WizardControl.ActiveStepChanged += new EventHandler(WizardControl_ActiveStepChanged);
            WizardControl.PreviousButtonClick += new WizardNavigationEventHandler(WizardControl_PreviousButtonClick);
            WizardControl.FinishButtonClick += new WizardNavigationEventHandler(WizardMain_FinishButtonClick);
 
            string workflow = Request.QueryString["Action"];
 
 
 
            //INTERNAL CONTROLS
            //Building up the step Navigator
            pageFlowIndex = pageFlow.GetPageFlowSteps(workflow);
            //Clear the dummy steps
            WizardControl.WizardSteps.Clear();
 
            int outofRangeIndex = 0;
            try
            {
 
                for (int i = 0; i <= pageFlowIndex.StepCount - 1; i++)
                {
                    outofRangeIndex = i;
                    WizardStep ws = new WizardStep();
                    ws.Title = pageFlowIndex.PageFlowSteps[i].StepName;
                    ws.StepType = WizardStepType.Auto;
                    WizardControl.WizardSteps.Add(ws);
 
 
                }
            }
            //M WARD. A Shameless Dirty Hack but time is against me.
            catch (ArgumentOutOfRangeException)
            {
 
                //TO DO: Comeback and refactor
                pageFlowIndex = pageFlow.GetPageFlowSteps(workflow);
                //Clear the dummy steps
                WizardControl.WizardSteps.Clear();
                for (int x = 0; x <= outofRangeIndex - 1; x ++)
                {
 
                    WizardStep ws = new WizardStep();
                    ws.Title = pageFlowIndex.PageFlowSteps[x].StepName;
                    ws.StepType = WizardStepType.Auto;
                    WizardControl.WizardSteps.Add(ws);
 
                }
            }
 
            PlaceHolder1.Controls.Add(WizardControl);
 
 
            if (!this.IsPostBack)
            {
                //this._presenter.OnViewInitialized();
                //BUILD THE STAGE STEPS FOR THE FIRST TIME
                WizardControl_StepsCreate(0);
 
                }
 
 
                //Loading the custom control into the wizard container
                for (int i = 0; i < WizardControl.WizardSteps.Count; i++)
                {
                    WizardStepBase ws = WizardControl.WizardSteps[i];
                    PageFlowObject.PageFlowPage target = pageFlow.GetPageFlow(i, workflow);
                    if (target.Source == null)
                    {
                        break;
                    }
                    if (i == WizardControl.ActiveStepIndex)
                    {
                        StageBarSource(target.StageID, target.StageStepID);
                    }
                    //Check to see if the next Button is to be disabled for  the submit
                    if (target.OverRideNextWizardButton == "1")
                    {
                        WizardControl.NavigationButtonStyle.CssClass = "oculto";
                    }
                    Control b = null;
                    b = Page.LoadControl(target.Source);
                    b.ID = "PageFlowFormControl" + i;
                    ws.Controls.Add(b);
                    WizardControl.WizardSteps.Insert(i, ws);
                }
            }
 
        [CreateNew]
        public WizardPagePresenter Presenter
        {
            get
            {
                return this._presenter;
            }
            set
            {
                if (value == null)
                    throw new ArgumentNullException("value");
 
                this._presenter = value;
                this._presenter.View = this;
            }
        }
 
        #region CREATE STEP FUNCTION
        /// <summary>
        /// Creates the Stage Steps
        /// </summary>
        /// <param name="currentStep"></param>
        void WizardControl_StepsCreate(int currentStep)
        {
 
            ///DISPLAY CONTROLS//
            ///*STEP BAR / Navigator*/
            if (pageFlowIndex.DisplaySteps == "0")
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("&lt;tr>");
                Table TableSteps = new Table();
                TableSteps.Rows.Add(new TableRow());
 
                int x = 0;
                foreach (WizardStep w in WizardControl.WizardSteps)
                {
                    TableCell tc = new TableCell();
 
                    if (currentStep == x)
                    {
                        tc.CssClass = "StepBarCurrent";
                    }
 
                    tc.Text = "&lt;span class='LargeFont'><strong>Step " + (x + 1) + "&lt;/strong></span><br/>";
                    tc.Text += "&lt;div class='SmallFont'>" + w.Title + "&lt;/div>";
                    TableSteps.Rows[0].Cells.Add(tc);
 
                    if (w.StepType != WizardStepType.Finish)
                    {
                        tc = new TableCell();
                        tc.BackColor = System.Drawing.Color.Silver;
                        TableSteps.Rows[0].Cells.Add(tc);
                    }
                    x++;
                }
                PlaceHolderStepBar.Controls.Add(TableSteps);
                //// /*END STEPBAR*/
            }
        }
 
        #endregion
 
 
        #region Wizard control events
 
        void WizardControl_PreviousButtonClick(object sender, WizardNavigationEventArgs e)
        {
            WizardControl.ActiveStepIndex = (e.CurrentStepIndex -1);
            WizardControl_StepsCreate(e.CurrentStepIndex - 1);
 
        }
 
        void WizardControl_ActiveStepChanged(object sender, EventArgs e)
        {
 
 
 
        }
 
        public void WizardMain_NextButtonClick(object sender, WizardNavigationEventArgs e)
        {
 
 
            WizardControl_StepsCreate(e.NextStepIndex);
 
            if ((pageFlowIndex.StepCount - 1) == WizardControl.ActiveStepIndex)
            {
                NavigateAction(Screen.NavWizard, pageFlowIndex.FinalRoute.ToString());
            }
            else 
            {
                WizardControl.ActiveStepIndex = e.NextStepIndex;
            }   
 
 
        }
 
        protected void WizardMain_FinishButtonClick(object sender, WizardNavigationEventArgs e)
        {
 
            NavigateAction(Screen.NavWizard, pageFlowIndex.FinalRoute.ToString());
        }
 
#endregion
 
        public void StageBarSource(string StageID,string StageStepID)
        {
           this.imgStage.Attributes.Add("src","generateStageImage.aspx?workflowStage=" + StageID + "&workflowstageStep=" + StageStepID);
        }

AN EXAMPLE OF CUSTOM CONTROL LOADED IN AT RUNTIME
HTML MARKUP WITH WATERMARK AS EXAMPLE OF ERROR

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="Application_CustomerAddressDetails.ascx.cs" Inherits="SBSA.VAF.UI.VAF.Views.Application_CustomerAddressDetails" %> 
<%@ Register Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>
 
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %> 
<%@ Register Assembly="Microsoft.Practices.Web.UI.WebControls" namespace="Microsoft.Practices.Web.UI.WebControls" tagprefix="pp" %>
 
<%@ Register Assembly="Microsoft.Practices.EnterpriseLibrary.Validation.Integration.AspNet" Namespace="Microsoft.Practices.EnterpriseLibrary.Validation.Integration.AspNet" TagPrefix="EntLibValidators"%> 
<%@ Register src="~/Controls/UI/Functions/ErrorDisplay.ascx" tagname="ErrorDisplay" tagprefix="uc1" %>
 
<link href="../../../Wizard/Wizard.css" rel="Stylesheet" type="text/css" /> 
<table align="left" cellpadding="0" cellspacing="0" width="100%">

[Frinavale]

Well you're web.config looks messed up to me.
I'm not sure if it's just how you have copy/pasted it but it should look like:

<configuration>
<configSections>
        <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
            <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
                <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
 
 
..................
 

In fact, a lot of your code seems to be cut off.....

Could you please post your code again for your web.config and for the Wizard Container Markup....because I can't tell why you are registering the System.Web.Extension here.....??

Your code may have been cut of by the forum in order to protect against potential harmful data so make sure you post your code in tags.