Problem with Session StateServer mode

StateServer mode stores session state in a process, referred to as the ASP.NET state service, that is separate from the ASP.NET worker process or IIS application pool. Using this mode ensures that session state is preserved if the Web application is restarted and also makes session state available to multiple Web servers in a Web farm.

But new user are facing problem with this Session state mode.

First ensure to use StateServer mode, you must first be sure the ASP.NET state service is running on the server used for the session store. The ASP.NET state service is installed as a service when ASP.NET and the .NET Framework are installed.

The ASP.Net state service is installed at the following location:
systemroot\Microsoft.NET\Framework\versionNumber\aspnet_state.exe
To configure an ASP.NET application to use StateServer mode, in the application's Web.config file do the following:
1.Set the mode attribute of the sessionState element to StateServer.
2.Set the stateConnectionString attribute to tcpip=serverName:42424.

Example:
<configuration>
<system.web>
<sessionState mode="StateServer"
stateConnectionString="tcpip=SampleStateServer:42424"
cookieless="false"
timeout="20"/>
</system.web>
</configuration>


Problem:
"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. If the server is on a remote machine, please ensure that it accepts remote requests by checking the value of HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aspnet_state\Parameters\AllowRemoteConnection. If the server is on the local machine, and if the before mentioned registry value does not exist or is set to 0, then the state server connection string must use either 'localhost' or '127.0.0.1' as the server name.

Solution:
Main solution is allow remote connection from registry.
To allow remote connection:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aspnet_state\Parameters\AllowRemoteConnection set value to 1
Restart ASP.NetStateService from systemroot\Microsoft.NET\Framework\versionNumber\aspnet_state.exe.

For more information visit: http://msdn.microsoft.com/en-us/library/ms178586.aspx

ASP.NET AJAX ARCHITECTURE

Microsoft ASP.NET AJAX enables you to quickly create Web pages that include a rich user experience with responsive and familiar user interface (UI) elements. ASP.NET AJAX provides client-script libraries that incorporate cross-browser ECMAScript (JavaScript) and dynamic HTML (DHTML) technologies, and it integrates them with the ASP.NET 2.0 server-based development platform. By using ASP.NET AJAX, you can improve the user experience and the efficiency of your Web applications.

ASP.NET AJAX Architecture

ASP.NET AJAX consists of client-script libraries and of server components that are integrated to provide a robust development framework. In addition to ASP.NET AJAX, you can use the ASP.NET AJAX Control Toolkit and the features in the ASP.NET AJAX Futures releases, which are both community supported.

AJAX Client-Server Architecture

The ASP.NET AJAX server components basically consists of ASP.NET web server controls and components to manage UI and and flow of an application, and to manage serialization, validation, control extensibility.

ASP.NET Web server controls:

1. ScriptManager : Manages script resources for client components, partial-page rendering, localization, globalization, and custom user scripts.
2. UpdatePanel : Enables you to refresh selected parts of the page, instead of refreshing the whole page by using a synchronous postback.
3. UpdateProgress : Provides status information about partial-page updates in UpdatePanel controls.
4. Timer : Performs postbacks at defined intervals. You can use the Timer control to post the whole page, or use it together with the UpdatePanel control to perform partial-page updates at a defined interval.

ASP.NET AJAX Web Services

ASP.NET AJAX provides Web services that you can use from client script to work with ASP.NET application services for forms authentication and user profiles.

ASP.NET AJAX Client Architecture

The ASP.NET AJAX client-script libraries be made of JavaScript (.js) files that provide features for object-oriented development. The object-oriented features included in the ASP.NET AJAX client-script libraries enable a high level of consistency and modularity in client scripting. The following layers are included in the ASP.NET AJAX script libraries:

• 
  
  A browser compatibility layer. This provides compatibility across the most frequently used browsers (including Microsoft Internet Explorer, Mozilla Firefox, and Apple Safari) for your ASP.NET AJAX scripts.
• 
  
  ASP.NET AJAX core services, which include extensions to JavaScript, such as classes, namespaces, event handling, inheritance, data types, and object serialization.
• 
  
  An ASP.NET AJAX base class library, which includes components such as string builders and extended error handling.
• 
  
  A networking layer that handles communication with Web-based services and applications, and that manages asynchronous remote method calls.
• 
  
  Support for JavaScript libraries that are either embedded in an assembly or are provided as standalone JavaScript (.js) files. Embedding JavaScript libraries in an assembly can make it easier to deploy applications and can solve versioning issues.
• 
  Support for accessing server-based forms authentication and profile information in client script. This support is also available to Web applications that are not created by using ASP.NET, as long as the application has access to the Microsoft AJAX Library.
  

ASP.NET AJAX Control Toolkit

The ASP.NET AJAX Control Toolkit is a collection of samples and components that show you some of the experiences you can create with rich client ASP.NET AJAX controls and extenders. The Control Toolkit provides samples and a powerful SDK to make it simple to create and reuse custom controls and extenders. You can download the ASP.NET AJAX Control Toolkit from the ASP.NET Ajax Web site. The ASP.NET AJAX Control Toolkit is community supported.

For more information:http://www.asp.net/AJAX/Documentation/Live/overview/default.aspx

Reference: asp.net site, wikipedia

How to add checkbox in Gridview in Asp.net

In this article, we shall try discuss about the most powerful and strong feature of Asp.net, GridView. Now we move to our discussion. As a developer and learner of Asp.net I faced a problem several times how to use asp.net sever side controls like, Button, Checkbox, Radio button and others.

Then I try to find out the solution in net. I found lot of information about this query. But I got the accurate information from the asp.net site.

Now I make available information through this site...

In this article discuss how to add a column of radio buttons to the GridView for the purpose of selecting a particular record. A column of radio buttons is a suitable user interface when the user is limited to choosing at most one item from the grid. At times, however, we may want to allow the user to pick an arbitrary number of items from the grid. Web-based email clients, for example, typically display the list of messages with a column of checkboxes. The user can select an arbitrary number of messages and then perform some action, such as moving the emails to another folder or deleting them.

For more information browse: http://www.asp.net/learn/data-access/tutorial-52-cs.aspx
Reference:Asp.net

Integrate Search Into Your Site With ASP.NET

Windows Live™ Search crawls content on the Internet and also exposes search functionality to developers through a Web service that allows the search to be scoped down to just your site. You can then render the results however you see fit.

Microsoft^® Office SharePoint^® Server 2007 is another good choice. It's a complete site-building and management solution that also provides robust search functionality. Figure 1 shows the results of a SharePoint Search integrated into a custom ASP.NET page.

If you're only interested in enterprise search, you may opt for the Microsoft Office SharePoint Server (MOSS) 2007 for Search edition (rather than the Standard or Enterprise versions of MOSS). The main differences are the maximum number of documents they can index and the ability to index advanced content such as external databases. However, even with the Standard version of the Search edition you can index file shares, Exchange public folders, Windows SharePoint Services (WSS) sites, and external Web sites.

For more information: http://msdn.microsoft.com/msdnmag/issues/07/09/WebSearch/default.aspx

Microsoft joins the OpenAjax Alliance

Microsoft is joining the OpenAJAX Alliance to collaborate with other industry leaders to help evolve AJAX-style development by ensuring a high degree of interoperability,” said Keith Smith, group product manager of the Core Web Platform & Tools to UX Web/Client Platform & Tools team at Microsoft Corp. “By joining OpenAJAX, Microsoft is continuing its commitment to empower Web developers with technology that works cross-browser and cross-platform.”
The newest OpenAjax Alliance members include: 24SevenOffice, ActiveGrid, ActiveState, Appeon, Aptana, Arimaan Global Consulting, Custom Credit Systems (Thinwire), ESRI, Getahead (DWR), Global Computer Enterprises, GoETC, Helmi Technologies, HR-XML, iPolipo, Isomorphic Software, JSSL, Lightstreamer, Microsoft, MobileAware, NetScript Technologies, OpenSpot, OpenSymphony (OpenQA), OpSource, OS3.IT, Redmonk, Tealeaf Technology, Teleca Mobile, Transmend, Visible Measures, Visual WebGui and Volantis Systems.
The Alliance is also announcing that the following members have all been awarded OpenAjax Interoperability certificates: Apache XAP, Dojo Foundation, ICEsoft, ILOG, Isomorphic, IT Mill, Lightstreamer, Open Link, Open Spot, Nexaweb, Software AG and TIBCO. The interoperability certificates represent progress by both OpenAjax Alliance and its members towards defining and achieving industry support for OpenAjax Conformance.

** Reference:ajaxian.com

ASP.NET Site Navigation

To create a consistent, easily managed navigation solution for the site, one can use ASP.NET site navigation. ASP.NET site navigation offers the following features:

• 
  Site maps You can use a site map to describe the logical structure of your site. You can then manage page navigation by modifying the site map as pages are added or removed, instead of modifying hyperlinks in all of your Web pages.
  
• 
  ASP.NET controls You can use ASP.NET controls to display navigation menus on your Web pages. The navigation menus are based on the site map.
  
• 
  Programmatic control You can work with ASP.NET site navigation in code to create custom navigation controls or to modify the location of information that is displayed in a navigation menu.
  
• 
  Access rules You can configure access rules that display or hide a link in your navigation menu.
  
• 
  Custom site-map providers You can create custom site-map providers that allow you to work with your own site-map back end (for example, a database where you store link information) and plug your provider into the ASP.NET site-navigation system.
  

Relationships Between Site-Navigation Components

The following illustration shows the relationships between the ASP.NET site-navigation components:
Figure: Relationships between the ASP.NET site-navigation components(From msdn)

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