What’s new in ASP.NET 4.0 ?

Agenda

• Changes to Core Services Extensible Output Caching Shrinking Session State Performance Monitoring Permanently redirecting a page

• Changes to Web forms Better control of the viewstate Setting MetaTags Chart conrol Routing Setting Client IDs

• Web Config File Refractoring• Auto-Start Web Applications• Expanding the Range of Allowable URLs• Extensible Request Validation• Object Caching and Object Caching Extensibility• Extensible HTML, URL, and HTTP Header

Encoding• Dynamic Lookup• Covariance and Contravariance• Variance in C# 4.0

Extensible Output Caching

• Possibility of creation of own storage:

o Memoryo Local or Remote Drive o Cloud Serviceso Distributed Cache Engines

To configure the custom cache provider, specify the details in your application's Web.config file

<configuration> <system.web> <compilation debug="true" targetFramework="4.0"/> <caching> <outputCache defaultProvider=“AspNetInternalProvide"> <providers> <add name="CacheProviderName" type="CacheProviderCategory"/> </providers> </outputCache> </caching> </system.web></configuration>

Possibility of creation of Cache Providers :<%@ OutputCache Duration="60" VaryByParam="None" providerName="CacheProviderName " %>

Usage of Different cache providers for different pages:

public override string GetOutputCacheProviderName(HttpContext context){ if (context.Request.Path.EndsWith(“example.aspx")) return " CacheProviderName "; else return base.GetOutputCacheProviderName(context);}

Shrinking Session State

In ASP.NET we can compress session state data for both Session-state server and Microsoft SQL server.<sessionState mode="SQLServer" sqlConnectionString="data source=local Initial Catalog=TestDB“ allowCustomSqlDatabase="true" compressionEnabled="true"/>

Performance Monitoring

If multiple applications use a single shared worker process , it is difficult for server administrators to identify an individual application performance.

In IIS hosted ASP.NET 4.0 application we can gather performance data for an individual ASP.NET Application.

Settings in the Aspnet.config file

<configuration> <runtime>

<appDomainResourceMonitoring enabled="true"/>

</runtime> </configuration>

Permanently Redirecting

New RedirectPermanent method that makes it easy to issue HTTP 301 Moved Permanently responses.

Example:Response.RedirectPermanent("newlocation/page.aspx");

Routing

Routing Mechanism.

Essential Points for a URL

• A domain name that is easy to remember and easy to spell

• Short URLs• Easy to type URLs• URLs that visualize site structure• Persistent URLs that don't change

URL Routing in .NET 4.0

Namespace: System.Web.Routingpublic Route MapPageRoute( string routeName, string routeUrl, string physicalFile, bool checkPhysicalUrlAccess, RouteValueDictionary defaults )Example: routes.MapPageRoute("","Category/{action}/{categoryName}", "~/categoriespage.aspx", true, new RouteValueDictionary {{"categoryName", "food"}, {"action", "show"}});

Setting Meta Tags

ASP.NET 4 introduces the new properties MetaKeywords and MetaDescription to the Page class. The @Page directive contains the Keywords and Description attribute.

Example:Page.MetaDescription=“This is the default page”Page.MetaKeywords=“This is the default page”

Better control of the viewstate

View state can be opt in ViewStateMode

• Enabled• Disabled• Inherit

Setting Client ID

4 Modes

AutoID Static Inherit Predictable

Chart Control

35 distinct chart typesAn unlimited number of chart areas,titles, legends, and

annotations3-D support for most chart typesStrip Lines, scale breaks, and logarithimic scalingSimple binding and manipulation of chart data.State managementBinary streamingSupport for common data formats, such as date, time

and currency.

THANK YOU !!