AJAX :: Error - "Script Controls May Not Be Registered Before PreRender. "?
Apr 23, 2010
I am using ajax tabpanel control. and i have fileupload control, gridview inside the tabpanel.if i select the file in fileupload control and click upload button it has to read the excel file data and bind the gridview.i debugged the code the dataset has the correct values and bind method also calling successfully.
but finaly in the screen shows this error message "Script controls may not be registered before PreRender."
what is the problem.
I get this error on postback from using a dynamic created controls, specifically the Ajax ComboBox. If I use DropDownList instead, then I don't get the error. How to over come this issue? I do need to use theAjax ComboBox because it allow extra properties not available in DropDownListHere is the complete error:Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Script controls may not be registered after PreRender.My ToolKitScriptManager resides in the MasterPage.
System.InvalidOperationException: "Script controls may not be registered before PreRender."
On my masterpage i am using Docking Panel control to get collapsable/Expandable left area. Its working fine but when i try to place an infragistic WebExplorerBar Control inside Docking Panel to get Outlook like view. It gives the above mentioned error.
I am creating Dynamic UserControls with Dynamic AjaxControls. Then I store each of the UserControls in a Collection. On Postback I recall the UserControls in the collection to Re-Create the interface. It works if i only use Standard HTML controls but does NOT work with AJAX controls. I get this error on PostBack Extender controls may not be registered after PreRender. So far I have tried the following:
MyBase.OnPreRender(e) in Page and Usercontrol EnsureChildControls() in the OnInit Added ScriptManager to the MasterPage None of this stuff is working... If I re-create all the controls including the ones inside the usercontrol then i get no error however it takes forever to do a postback as opposed to just recalling the collection of UserControls.
When creating dynamic ajax controls you may experience a pre-render issue on postbacks. You are supposed to re-create the controls on postback, however if there are very many of them performance gets very slow between each postback. i.e. clicking on a combobox, it may take several seconds. So what I did was group the controls in panels, store the panels in a collection, then re-call the panels on Postback. This actually works great if the controls inside the panel are standard html controls (textbox, dropdowlist, etc.). But...doesn't work well with ajax controls...yet.
I have included a sample below. Uncomment/Comment the code to test it.
When creating dynamic ajax controls you may experience a pre-render issue on postbacks. You are supposed to re-create the controls on postback, however if there are very many of them performance gets very slow between each postback. i.e. clicking on a combobox, it may take several seconds. So what I did was group the controls in panels, store the panels in a collection, then re-call the panels on Postback. This actually works great if the controls inside the panel are standard html controls (textbox, dropdowlist, etc.). But...doesn't work well with ajax controls...yet.
I have included a sample below. Uncomment/Comment the code to test it. If anyone has a good idea how to make this work with ajax controls that would be great.
Public Class WebForm1 Inherits System.Web.UI.Page Shared panellist As New List(Of Panel) Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If IsPostBack Then 'This is for reloading panels. Works with dropdownlist, but not ajax combobox For Each pn As Panel In panellist PlaceHolder1.Controls.Add(pn) Next 'This for re-creating all the controls again. Not very efficient for ajax controls though. 'CreateInterface() Else CreateInterface() End If End Sub Protected Overrides Sub CreateChildControls() MyBase.CreateChildControls() End Sub Protected Overrides Sub OnInit(ByVal e As System.EventArgs) MyBase.OnInit(e) EnsureChildControls() End Sub Private Sub CreateInterface() Dim pn As Panel pn = CreatePanel("panel1") CreateControls(pn, 5) pn = CreatePanel("panel2") CreateControls(pn, 5) pn = CreatePanel("panel3") CreateControls(pn, 5) pn = CreatePanel("panel4") CreateControls(pn, 5) End Sub Private Function CreatePanel(ByVal name As String) As Panel Dim pn As New Panel pn.ID = name pn.Width = 250 pn.BorderStyle = BorderStyle.Solid pn.BorderColor = Drawing.Color.Blue pn.Style.Add("margin", "5px") pn.Style.Add("padding", "5px") PlaceHolder1.Controls.Add(pn) panellist.Add(pn) CreatePanel = pn End Function Private Sub CreateControls(ByVal pn As Panel, ByVal howmany As Integer) Dim cbo As AjaxControlToolkit.ComboBox 'Dim cbo As DropDownList For i As Integer = 0 To howmany - 1 cbo = New AjaxControlToolkit.ComboBox 'cbo = New DropDownList cbo.ID = pn.ID & "_cbo" & i cbo.Width = 200 cbo.Items.Add("Item 1") cbo.Items.Add("Item 2") cbo.Items.Add("Item 3") cbo.Items.Add("Item 4") cbo.Items.Add("Item 5") cbo.Style.Add("margin", "3px") cbo.AutoPostBack = True pn.Controls.Add(cbo) Next End Sub End Class
Protected Sub btnClick_Click(ByVal sender as Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnclick.click
Dim sb as New System.Text.StringBuilder() sb.Append("<script language='JavaScript'>launchExecutable('") sb.Append(path) sb.Append(" 2 ") sb.Append("</script>);") ScriptManager.RegisterStartupScript(btnclick, me.Gettype(), "btnclickform", sb.ToString()) End Sub
This is a cut down version of my code, but I'm running this on a TabPanel, so it sets on an Update Panel. If I run this code on a standalone aspx page it works...in other words, without the TabPanel. However, I need it to work on a TabPanel. This is the errors I get: Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: The script tag registered for type 'ASP.client_default_aspx' and key 'btnclickform' has invalid characters outside of the script tags: );. Only properly formatted script tags can be registered.
I migrated an ASP.NET 3.0 application from one web server to another. The only difference that I know of between these webservers are, one is running II6 and the new one (the one this app was moved to) is running IIS7. The application was running fine in it's old environment, no code changes were made, but now it doesn't seem to like the web.config. I get the following error:
i use this code because i had problems when 30 minutes of the last action were past then it didnt found the other pages of my project with this code it works fine
but i have a subfolder inside the project and there the problem still exists
i had a web config there then i tried to adjust the previous code inside this second web config but i took this error "It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS."
I want to manage two web.config file in a application one for the front-end user and second for the back-end(admin) user.for admin section I have created a folder with name admin in the same website.following settiongs are in the admin/web.config
when I am trying to run the application I am getting following error message:It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS
I´m trying to build a site : http://muralhas.siteparaver.com/ with a login and a password, but when i log i get this error:
Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
I have to do some changes in a site which was developed by some developer already. On server it was not in built format while it was in code format. I downloaded its copy and try to run it on my machine (I have Win 2003 server) but faced the subjected line. In web.config its authentication mode is form. I am not much experienced and have not used form authentications. I even tried to create a new web site and copy files in it and run it but no luck. Please guide me how I can remove this error.
I have a control on a page. In the control's pre-render event I'm executing some code that's taking about a minute to execute. This means the whole page is unresponsive until the control's pre-render event is finished executing.I tried putting the control inside an update panel, but it doesn't matter the rest of the page still won't render until the pre-render event of the control is finished executing. I've attached a very simple example of my code (The event that's slowing up the control's pre-render event is not Thread.Sleep(1000):
I am getting this error on a simple page that has the following registration:
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>Additionally, I have the following in the MasterPage: <cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server" EnablePageMethods="true" EnablePartialRendering="true"> </cc1:ToolkitScriptManager>
I have been led to believe that the best point to bind your controls is the PreRender. As all the controls are ready and this is the last stage before rendering etc. Is this correct or should controls be bound at a different point?
I have a override Render method on my AccordionMenu.ascx.cs, basically just replace the <span></span> tag with <div></div> due to w3c compliance requirement, this is the c# code:
[Code]....
but when i try to run it, the page always throws an exception to me like this: Extender control 'MyAccordion_AccordionExtender' is not a registered extender control. Extender controls must be registered using RegisterExtenderControl() before calling. this is the context of my pages: accordion menu is placed in the content page, and the content page is inherited from a master page, the master page has a script manager.
I am creating a custom control where I need to attach some javascript to it so that it can do stuff on the client side. When I try to use ScriptManager.RegisterStartupScript it errors out and tells me that the ScriptManager is not registered.
I have a DetailsView on my page, bounded throught ObjectDS (but I think it's not important). Some field is readonly for some users - based on role membership and other paramaters. I've tried to use the PreRender event to manage these field's readonly state. Everything is working - except one template field: when I click first time on Edit button the dropdown list stay readonly independently the role membership. When I click on Cancel than Edit again the control state is good. Code of PreRender event handler:
[Code]....
Environment:Web Developer 2008 Express .NET Fw. 3.5 Windows XP
At the first loading of my page, duration of PreRender takes upto 13 seconds. That page has basically a gridview control which bind to SqlServer query by SqlDataSource. When I execute query seperately, it takes only 0.02 second.
On the other hand, for the next loadings of same page by postback, duration of PreRender varies from 0.5 second to 3-4 seconds.
In addition to gridview, there are several dropdownlist, update panel, ImageButton in gridview. I use paging for Gridview.
Which strategy should i follow to increase performance of this page?
I have developed a website that allows users to upload office documents then uses the office object model to convert the document to an HTML file that it then displays in an iFrame. I have, of course, included references to Office.interop.word, and the site works fine on my development machine. When I uploaded it to my production server the site functions fine until I try to upload a document. I initially got a similar error that said "COM object not registered". I realized that Word wasn't installed on my production server. So I installed word and now when the server tries to access the word object model I receive the following error:
Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
I searched the registry for the corresponding CLSID and found a corresponding folder. I added full control to the IUSR_ account and due to the persistence of the error I eventually added full control to "everyone" and ensured these permissions inherited down to the rest of the folder. I then added full control to IUSR_ and again eventually added full control to "everyone" to my microsoft office folder. I don't know what other permissions to grant and where in order to make this "Access is denied" error go away. I must be granting them in the wrong place, because as far as I know I can't be any more permissive than "Everyone" "Full Control".
Whenever I try to export a ListView with formatting or dynamic content in the PreRender event to an Excel file, I lose all of the changes from the PreRender event. Here's the ListView code:
I've done some reading and found that RenderControl possibly ignores anything in PreRender for a control, but I'm thinking there has to be a way to get those PreRender changes in there before extracting the ListView to Excel.
The only workaround I've found so far is to copy and paste all of my preRender code into the Page_Load, and then everything looks fine in Excel. However, then I have to duplicate my code, as I still need it in the preRender event to display it on the screen properly. I don't want to maintain the code twice.
