.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 custom control mode

Posted By:      Posted Date: October 22, 2010    Points: 0   Category :ASP.Net

hi friends,

i have uploaded my site www.mascotbpo.com

it it working properly on local machine but when i uploaded on server i am facing 1 error on button clik of any form.

there are two ages career and contact whenever i submit this data by clicking button i get this error.


Server Error in '/' Application.

Runtime Error

Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, ho

View Complete Post

More Related Resource Links

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" 

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

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.

"The selected cells are read-only" error on Custom Field when trying to insert in Datasheet mode

I have a custom field that works completely fine. Yesterday our QA team found out that when trying to insert in Datasheet format, the error "The selected cells are read-only" was thrown. Any ideas? I tried passing the following property to my fldtypes_field.xml file:

    <Field Name="ReadOnly">FALSE</Field>

No luck.
Victor Palma

Turn ON Custom Error and disable debug mode



We have a ASP .Net based web service setup and hosted on a IIS v6.0. We wish to turn on custom error and disable debug mode. I understand these can be accomplished by modifying the web.config and machine.config file. However, since web service does not have a UI...please let me know if the changes made to the config files will take into effect. The reason why we wish to do these changes is because, our external auditors have flagged these as a vulnerabiity.



Venkatesh Selvaraju

TCP Connection Error with Custom Control Web Part


Hello all,

We have a custom web part based on a user control that queries a database cluster. When the connection to the database is made, we regularly experience the error below and have had to create a work-around in the code to retry the connection.  We have 3 environments - development, staging and production; the error only occurs in production.  The difference in the production environment is it is a farm with 3 WFEs and a SQL cluster, where development and staging are single machine instances.  All are MOSS 2007 & SQL Server 2008.

We cannot find what is causing this issue and I'm hoping someone else has experienced a similar problem and knows the cause.

This is the error that occurs frequently when the query is executed:

System.Data.SqlClient.SqlException: A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)

at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)

at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)

at System.Data.SqlClient.TdsParserStateObject.WriteSni()

at System.Data.SqlClient.TdsParserStateObject.ExecuteFlush()

at System.Data.SqlClient.TdsParser

video tutorial link for composite and rendered custom server control


hii all

i am new to technology so go easy on this post

according to what i read from web there are 3 type of custom server controls

1 superclass

2 composite

3 rendered

i found video tutorial for superclass custom server control but couldnt find video tutials for other 2.

please forward me link for composite and rendered custom server controls video tutorial  

image inside custom server control



I want to use an image inside a Custom Web server control ! 

Do I need to use Web.resources ? if so , how to do ?

Custom Server Control Property not maintaining state


I have created a server control consisting of a TextArea and a div under it.  My goal is to create my own asp:TextArea type control.  the div is for a Character count of the text area and seems to work ok but i added a CharacterCountVisible property to the control that is always returning true.  See Proptery definition below


<Bindable(False), Category("Appearance"), DefaultValue("True"), Localizable(True)> Property CharacterCountVisible() As Boolean
        Return _CountBoxVisible
    End Get
    Set(ByVal value As Boolean)
        _CountBoxVisible = value
    End Set
End Property

Note the _CountBoxVisible variable is define inside the class as :

Dim _CountBoxVisible as Boolean = True

What I am trying to do is give the user/coder the option to show/utilize the char count feature.  Can make it disappear with textarea1.CharacterCountVisible = False but setting it to true will not make it display.


What am i missing





custom control



i want to create  my own button using server control .cs file ..

it should have background color black and foreground color as lime and also it should have

the eventhandler mechanism when we double click on that..

can u provide a code for that...?

custom control


hi.. i want to create a custom control button and textbox using server control.. if i type the text into the textbox,when i click the button it should go to the next page related to that text...

please can u provide a code for this kind of question 

"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"

Extend ASP.NET: Simplify Data Binding In ASP.NET 2.0 With Our Custom Control


The wwDataBinder control addresses simple control data binding--binding simple form controls like textboxes, checkboxes, and the selected values of list controls to individual data or object values.

Rick Strahl

MSDN Magazine December 2006

Cutting Edge: Custom Data Control Fields


In ASP. NET 2. 0, the GridView and DetailsView controls are designed to work together. They don't merely provide complementary services, they also share a number of helper classes and components. The output of the GridView control consists of a sequence of rows, each with a fixed number of columns.

Dino Esposito

MSDN Magazine January 2006

Error Handling: Throwing Custom Exception Types from a Managed COM+ Server Application


Exception handling semantics in .NET are based on type, so you can create custom exceptions that have their own properties and methods. In .NET, exceptions are first-class citizens, and since they're the built-in error handling mechanism, all .NET-compliant languages must support exceptions. In addition, COM+ services are available to .NET code as Enterprise Services, so you can leverage exceptions in your Enterprise Services design.In this article the author describes custom exceptions, throwing exceptions across COM interop boundaries, and working with Enterprise Services.

Bob DeRemer

MSDN Magazine March 2004

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