Failed to access IIS metabase in ASP.NET

Introduction: 

Here I will explain how to solve the problem “Failed to access IIS metabase ASP.NET” when we try to browse website using asp.net

Description:

In my machine I tried to access one of the website from IIS at that time I got error like “Failed to access IIS metabase ASP.NET”. I realized that problem because of process model user account (in our case, ASPNET) does not have the correct user rights for the required system files and folders to run the ASP.NET worker process and apparently there is a bug in the ASP.NET install.

Method error 500/12031 in ajax cascadingdropdown extender | AJAX CascadingDropDown - Method Error 500

Introduction: 

Here I will explain how to solve the problem “Method error 500/12031 in ajax cascadingdropdown extender” using asp.net. 

Description:

In previous post I explained clearly about Ajax cascading dropdownlist sample. Generally during implementation of cascading dropdonlist we will see our dropdowns shows error like “Method error 500 or Method Error 12031”. This error is occurred because of missing following line of code in WebService.

A potentially dangerous Request.Form value was detected from the client in asp.net

Introduction:

In this post I will explain how to solve the problem “A potentially dangerous Request.Form value was detected from the client in ASP.NET WebForms” using asp.net.

Description: 

In previous post I explained clearly about Rich textbox sample in asp.net . After completion code if I try to insert some html formatted data in database using rich textbox I got error like “A potentially dangerous Request.Form value was detected from the client in ASP.NET WebForms”

SQL Server Error - Saving Changes in not permitted. The changes you have made require the following tables to be dropped and re-created. You have either made changes to a table that can’t be re-created or enabled the option Prevent saving changes that require the table to be re-created

Introduction

Here I will explain how to enable prevent saving changes in sql server or to solve the problem of “Saving Changes in not permitted. The changes you have made require the following tables to be dropped and re-created.etc” in SQL Server.

Description

I have installed SQL Server 2008 in my laptop after successfully installed I opened SQL Server Management studio and created new table like this 

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Introduction:

Here I will explain how to solve the problem “A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)” during the time of connect to database.

The specified display mode is currently disabled on this page. Make sure personalization is enabled for the current user

Introduction:

Here I will explain how to solve the problem The specified display mode is currently disabled on this page. Make sure personalization is enabled for the current user during personalization of webpart in application.

Description:

During the time of webpart personalization of application I got error like

Failed to update database because the database is read-only | Failed to update database "XXXXXX\APP_DATA\DBSQAFTP.MDF" because the database is read-only in iis

Introduction:

Here I will explain how to solve the problem Failed to update database "XXXXXX\APP_DATA\DBSQAFTP.MDF" because the database is read-only during the time of publish application using asp.net.

Description:

I deployed one of my website in IIS and trying to test the application during that time I got error like this

Unable to start debugging on the web server. The web server is not configured correctly. See help for common configuration errors. Running the web page outside of the debugger may provide further information

Introduction:

In this article I will explain how to solve unable to start debugging on the web server. The web server is not configured correctly problem in iis7.

Description:

In previous post I explained clearly about what WCF is and I explain how to create WCF sample and how to consume WCF service in our application. Now I will explain how to solve unable to start debugging on the web server. The web server is not configured correctly problem in asp.net. 

Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same.

Introduction:

In this article I will explain how to solve Unable to make the session state request to the session state server. Please ensure that the ASP.NET State service is started and that the client and server ports are the same. Problem in asp.net.

Description:

In previous post I explained clearly about what WCF is and I explain how to create WCF sample and how to consume WCF service in our application. After completion of coding I tried to run my application on my local system during that time I got error like 

There is no compatible TransportManager found for URI. This may because that you have used an absolute address which points outside of the virtual application

Introduction:

In this article I will explain how to solve The page you are requesting cannot be served because of the extension configuration problem in IIS7.

Description:

In previous post I explained clearly about what WCF is and I explain how to create WCF sample and how to consume WCF service in our application. After completion creation of WCF service I tried to host my application on my local system during that time I got error like 

The page you are requesting cannot be served because of the extension configuration problem in IIS7

Introduction:

In this article I will explain how to solve The page you are requesting cannot be served because of the extension configuration problem in IIS7.

Description:

In previous post I explained clearly about what WCF is and I explain how to create WCF sample and how to consume WCF service in our application. After completion creation of WCF service I tried to host my application on my local system during that time I got error like 

The Service on local computer started and then stopped ,Some services stop automatically if there are not in use by other services or programs

Introduction:

Here I will explain how to solve the Service on local computer started and then stopped, some services stop automatically if there are not in use by other services or programs

Description:

In previous article I explained clearly how to create windows service and how to run windows service in scheduled intervals and how to install windows service in system. In my system I tried to install windows service completion writing the code but at that time I was unable to install windows service I got error like this

Invalid length for a base-64 char array error during decryption of password using asp.net

Introduction:

Here I will explain how to solve the problem invalid length for a base-64 char array during decrypt of encrypted password using asp.net.

Description:

In previous post I explained clearly how to encrypt and decrypt password using asp.net . After completion code for encrypt and decrypt password if I run the program I get problem like

The requested page cannot be accessed because the related configuration data for the page is invalid problem in IIS

Introduction:

In this article I will explain how to solve the requested page cannot be accessed because the related configuration data for the page is invalid problem in IIS7.

 

Description:

Previously I explained how to solve Login failed for user in IIS. Recently I started working with IIS7 at that time I face some of strange problems to rectify those errors I did some modifications in IIS. After seen those errors I decided to write this post to help people who are need with this error.  I did one sample application and deploy application in IIS. I started running my deployed application at that time I get error like this 

System.Data.SqlClient.SqlException: Login failed for user 'IIS APPPOOL\DefaultAppPool' in IIS7

Introduction:

In this article I will explain how to solve System.Data.SqlClient.SqlException: Login failed for user 'IIS APPPOOL\DefaultAppPool' problem in IIS7. 

Description:

Recently I started working with IIS7 at that time I face some of strange problems to rectify those errors I did some modifications in IIS. After seen those errors I decided to write this post to help people who are need with this error.  I did one sample application and deploy application in IIS. I started running my deployed application at that time I get error like this 

System.Data.SqlClient.SqlException: Login failed for user 'IIS APPPOOL\DefaultAppPool'

RegisterForEventValidation can only be called during Render();

Introduction:

Here I will explain how to solve the problem RegisterForEventValidation can only be called during Render(); during export of gridview to excel or word or csv using asp.net.

Description:

In previous post I explained clearly how to show export gridview data to excel,word,notepad and csv using asp.net Export gridview data to Excel,Word . During export a gridview data to excel, word, notepad or csv I got error like 

Control 'gvdetails' of type 'GridView' must be placed inside a form tag with runat=server

Introduction:

Here I will explain how to solve the problem Control 'gvdetails' of type 'GridView' must be placed inside a form tag with runat=server during export of gridview to excel or word or csv using asp.net.

Description:

In previous post I explained clearly how to show export gridview data to excel,word,notepad and csv using asp.net Export gridview data to Excel,Word . During export a gridview to excel, word, notepad or csv I got error like 

how to solve Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'GetSlides' failed with the following error during usage of Ajax slideshowextender control in asp.net

Introduction:

Here I will explain how to solve the problem Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'GetSlides' failed with the following error: during use of Ajax Slideshow extender control to display images from root folder using asp.net

Description:

In previous post I explained clearly how to show slideshow using AjaxSlideshowExtender control from root folder in asp.net check here . During working with Ajax SlideshowExtender I got error like

Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'GetSlides' failed with the following error: <html><head>

Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll.

Introduction:

Here I will explain how to solve AjaxControlToolkit error like Ensure the correct version of the scripts are referenced. If you’re using an ASP.NET ScriptManger, switch to the ToolkitScriptManager in AjaxCOntrolToolkit.dll.

Description:

I have installed AjaxControlToolkit and added all ajax controls to Toolbox in visual studio after completion of this process I started using AjaxControlToolKit controls I have drag and drop one ajax control (ex:PasswordStrength control) from Toolbox and added ScriptManager to program and after completion of everything I tried to run the application at that time unexpectedly I got error like “AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll”. 

SQL Server 2008 ERROR: Saving changes are not permitted. The Changes you have made require the following tables to be dropped and re-created.

Introduction

Here I will explain how to solve problem in SQL Server 2008 Saving changes are not permitted.

Description

 I installed SQL Server 2008 and I created one new database after that I created one table and saved it everything working fine again I opened newly created table to change column name previously I entered wrong name again I changed column name and if I am trying to save that modifications I got error like this