.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Error Creating Control ReportViewer1

Posted By:      Posted Date: October 03, 2010    Points: 0   Category :ASP.Net

I recently downloaded Visual Web Developer Express 2010 and I am having difficulty with the report viewer control. I also downloaded the reportviewer 2010 redistibutable and added a reference to my site.  When I drag and drop from the toolbox in design view the controls error is: Failed to create designer "Microsoft.Reporting.WebForms.ReportViewer, Microsoft.Reportviewer.WebForms, version= culture=neutral PublicKeyToken=b03f5f7f11d50a3a.  It works when I view it in the browser and the report renders fine but I don't have access to it in design mode.  Also, when I attempt to view a rdlc file it's the xml version instead of design mode. 

I have a trial version of Visual Studio on another computer so I created a reportviewer website and opened this site with the Visual Web Developer Express 2010.  The web.config relating to the reportviewer is below.

Thanks in advance for your assistance.  There isn't much on the web to fix this problem.

    <compilation debug="false" strict="false" explicit="true" targetFramework="4.0">

View Complete Post

More Related Resource Links

Error Creating Control - 'asp:UpdatePanelAnimationExtender' could not be set on property 'Animati

It doesn't seem to matter what I try to make the animation do, I keep getting this shown in the designer. No one else on google seems to be getting that problem either. Note: it doesn't cause debugging or runtime issues... in fact, the only negative thing it does is make it extremely annoying when I look at the designer... I'm going to have about 12 of these updatepanelanimations firing everytime the timer ticks too :(. MasterPage file has the toolkitscriptmanager on it. Here is my designer code for the page I'm having the issue on:<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/MasterPage.Master" CodeBehind="TimeLine.aspx.vb" Inherits="TimeLine.WebForm1" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <asp:Timer ID="Timer1" runat="server" Interval="7000"> </asp:Timer> <asp:Panel ID="Panel1" runat="server" Height="285px" HorizontalAlign="Center" Width="970px" BackImageUrl="~/Images/Img.jpg"> <br />

Ajax Control Toolkit Error Creating Control

Error Creating Control - ToolkitScriptManager1Unknown server tag 'asp:ToolkitScriptManager'.Error Creating Control - ComboBox1Unknown server tag 'asp:ComboBox'.I encountered this error, very annoying becasue it would shut off design view rendering of ComboBoxes as well as entire parent containers like ListViews.  It took me a lot of efforts to hunt down the cause, which would seem very illogical if not weird.  So I am suspecting that it is just happening to me, but would appreciate if somebody could care to reproduce and see if it is actually a bug.Cause: HtmlHead title tag has textFix: Delete text in HtmlHead title tagSteps to reproduce and verify error:1. Have AjaxControlToolkit.Binary.NET4 Instructions: http://www.asp.net/ajaxlibrary/act.ashx Download: http://ajaxcontroltoolkit.codeplex.com/releases/view/43475#DownloadId=1165342. Start Visual Studio 2010 Ultimate Open new project ASP.NET Web Application Default name WebApplication13. Keep Default.aspx open Add Ajax Control Toolkit in Toolbox Close Default.aspx4. Add new folder in WebApplication1 Default name NewFolder15. Add new nested master page in NewFolder1 Default name NestedMasterPage1.master Select Site.Master as master page6. Open NestedMasterPage1.master Add ContentPlaceHolder in Content2 Default ID ContentPlaceHolde

Error Creating Control - ConfigurationManager


I create a new control. At the new fuction, invoque a ConfigurationManager.GetSection method to obtain a property.

Public Sub New()


_style As ClassStyle = DirectCast(ConfigurationManager.GetSection("configurationSection"), ClassStyle)


End Sub

In a new webpage, insert the new control and obtain "Error Rendering Control - Object reference not set to an instance of an object". Debugging Visual Studio 2008, the method ConfigurationManager.GetSection("configurationSection") is Nothing.

Can't vs2008 resolve configuration section in design mode?


Sorry for my english.

Visual Studio 2010 - Design Mode Error - "Error Creating Control"



I am using Visual Studio 2010.  I was debugging a web application and an exception happened and VS 2010 froze.  I ended the VS 2010 in the task manager and when I went back to developing, I found on every form for every ASP.net control I get:


Error Creating Control -

Error HRESULT E_FAIL has been returned from a call to a COM component.


Also I am unable to edit  the form or add anything from the toolbox.


Any help on this matter will be appreciated.





Error creating control contentplaceholder1 Visual Studio 2010 design mode


After I imported a VS 2008 web project to VS 2010, I can't view aspx pages that have master pages in design mode. The page design mode displays "error creating control - contentplacehoder1 object reference not set to an instance of an object." The project builds and runs fine though. I have only one master page that all other aspx pages reference and I don't have any nested master pages. Can anybody help me with this? Thanks in advance.

Error Creating Control - TopNavigationMenuV4


I hope this is an easy for you all. I had the opprotunity of hiring a company to create a couple of layout pages for us. When I finally got them I get the following error message in SPD and the breadcrumbs are no longer showing up:
Error Creating Control - TopNavigationMenuV4
This control cannot be displayed because its TagPrefix is not registered in the Web Form.
Error Creating Control - TopNavigationDelegate
This control cannot be displayed because its TagPrefix is not registered in the Web Form.

What do I have to do to fix this issue (outside of electronic shock therapy for the person who gave me the page.

thanks a bunch!!! Jake

Error Creating Control


How do I remove the Error Creating Control message found in the default web page under the directory of WebForms Control Sample, Sprite and Image Optimization Framework.


Error Creating Control - asp:imagespriteUnknown server tag 'asp:ImageSprite'.



using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)


Creating Paging for a Repeater Control

A common question is "How do I implement paging within a Repeater?" Although the beauty of the Repeater control is its flexibility, you're on your own for building most functions. ASP.NET 2.0 has included some new controls that provide paging, as does the DataGrid in ASP.NET 1.1. However, this tip shows you how to roll your own paging for a simple data viewer.

Custom Control Design-Time SiteMap Provider Error


Greetings - I was referred here by MSDN forums hope this is the right place -  

I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains

Error Creating Control - MyControl  The provider 'AspNetXmlSiteMapProvider' specified for the defaultProvider does not exist in the providers collection.

I have discovered that the error is cause by this line of code:

string div = string.Format("<div class='{0}' id='{1}'>{2}</div>", this.CssClass, this.ID.ToString(), EnumerateNodesRecursive(SiteMap.RootNode, level));

or more specifically, by the reference to SiteMap.RootNode - I am not clear what is missing thoough because I have configured the SiteMapProvider in web.config as this:

        <add name="AspNetXmlSiteMapProvider" 
             type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" 

"Type ASP.x is not defined" error for dynamic user control when publishing updateable


I have a user control (ContainerCtrl) which programmatically instantiates another user control (SimpleCtrl) in OnLoad. It builds and runs fine, but when I publish it I get the error "error BC30002: Type 'ASP.SimpleCtrl' is not defined." (If I publish without the "updateable" option there's no error, but I need the site to be updateable.)

I assume this has to do with the particulars of how the assembly(ies) are built for the different compiler options. My question is, how can I get it to work properly for "updateable" publishing?

VS 2008 / .NET 3.5 sp1

The code follows (web.config is the default from Visual Studio).

Many thanks, Dave


<%@ Control Language="VB" ClassName="SimpleCtrl" CodeFile="SimpleCtrl.ascx.vb" Inherits="_SimpleCtrl" %>

    Simple control


Partial Class _SimpleCtrl
    Inherits UserControl

    'Nothing to see here.

End Class


<%@ Control Language="VB" CodeFile="ContainerCtrl.ascx.vb" Inherits="_ContainerCtrl"

Custom Control Design view error



I have created a custom control from scratch and it works fine as in you can build the project that uses it and it works fine at runtime. Problem is when you go to design view the control shows an error in the place of where the control should be rendered.

Error: '<SomeValue>' Could not be set to '<SomeProperty>'

This shows up on all my custom set properties. These properties are created as basic as possible. I can give the properties values in Source view and run the app just fine. I can even add a Onclick event. If I don't set any custom properties the control will render fine in Design view. It's only when I set a value to a custom property.

Property Code Example:

public string Text
                string ret = "";
                object obj = ViewState["Text"];
                if (obj != null)
                    ret = obj.ToString();
                return ret;
                ViewState["Text"] = value;

I've even removed the Category and Description tags with no difference.

I don't know if what I said makes sens, but I hope it

Advanced Basics: Creating A Breadcrumb Control


Hansel and Gretel had the right idea when "they followed the pebbles that glistened there like newly minted coins, showing them the way. " The deeper you get into the forest or into your data, the more likely you are going to need help to find your way back out again.

Duncan Mackenzie

MSDN Magazine July 2005

Advanced Basics: Creating a Five-Star Rating Control


I have to admit it; most of my Windows® Forms controls are an attempt to copy something that already exists. In my October 2004 column I showed you how to create a progress bar that mimicked the one shown during the Windows XP setup routine, and this month I'm at it again.

Duncan Mackenzie

MSDN Magazine January 2005

To create a custom control and type while creating a column


HI All,

i am creating a column in the list while creating a column i will have an option for choice field on selecting choice i can see dropdown, radiobutton, Checkbox to select and  can enter list of values. and on clicking ok i will get a column with radiobutton. in newform.aspx and also in editform.aspx

so i need to create the similar functionality with my custom radio button, so on create column i need to show my custom choce on selecting this i need to show my custom radiobutton  and  can enter list of values then on selecting it then click ok to create a column, in edit form and new form i need to show a radio buttons with values.

Thanks in advance




Using tabs from the AjaxControlToolkit causes error: ...control contains code blocks (i.e. <% ... %>


I'm getting the error:

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

When attempting to add the tabs from the AjaxControlToolkit.  A little background..Theres an existing aspx page in a microsite which used the accordion control and the tabbed control ...I need to modify this page to use a different masterpage. 

The original site was .Net Framework 2.0 and the page in question used AjaxControlToolkit 1.0. which I manually installed originally.  Some of the site has been further developed using the .Net Framework 3.5.  (Come with AjaxControlToolkit) Now I have come to update this aspx page and I get the error above.

I have narrowed the down to the TabContainer (I think)  Does anyone have any experience with this sort of problem?  Also what version of the AjaxControlToolkit should be with the .Net Framework 3.5? I have 1.0.20229.20821. 

I also tried to browse to the AjaxControlToolkit.dll to add the tools to the tool box as they're missing... thinking this may be an indicator as to why it wasn't working. I get the error: 'There was an error loading types from assembly C:\inetpub\wwwroot\project\Bin\AjaxControlToolkit.dll Could not load file or assembly 'System.Web.Extensions. Version=

Creating an integer only textbox control

Hi all I was wondering on how to create an integer only textbox control. Im close I just cant figure out why its not working. public partial class IntegerTextBox : TextBox { public IntegerTextBox() { } private void OnTextChanged(KeyPressEventArgs e) { if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar)) e.Handled = true; } }

Re;Creating Dynamic Control

Hi, I have a table which stores the data like mentioned below ID Name Values 1 States Karnataka,Tamilnade,AP,UP 2 Karnataka Bangalore, Mysore, Bidar 3 tamilnadu Salem,Chennai,Pondicherry 4 AP Hyderbad,Secunderabad,Vishakapatanam 5 UP Delhi,Agra Now i have to create a dynamic controls for each and every states from the above table. A Sate Name should be dispalyed with checkbox on check of checkbox i have to enable all the cities which is again associated with the checkbox.How do i simulate this functionality using dynamic checkbox and labels. Please help me with a sample code.
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend