ASP.NET,C#.NET,VB.NET,JQuery,JavaScript,Gridview: Errors

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

By: Suresh Dasari May 20, 2011 35 comments

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();

By: Suresh Dasari Apr 2, 2011 37 comments

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

By: Suresh Dasari Mar 30, 2011 27 comments

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

By: Suresh Dasari Mar 22, 2011 7 comments

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.

By: Suresh Dasari Mar 21, 2011 4 comments

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.

By: Suresh Dasari Dec 28, 2010 2 comments

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

Cannot open database requested by the login. The login failed. Login failed for user 'NT AUTHORITY\NETWORK SERVICE'.

By: Suresh Dasari Oct 6, 2010 15 comments

Introduction

Here I will explain about my database connection error in SQL Server if trying to get data by using asp.net.

Description

I have created one database in my Local SQL Server Management Studio in that I created one table and entered some data in that table.

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