What's new in ASP.NET 4.0 ? - DotNetSpider

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
Memory

o
Local or Remote Drive

o
Cloud Services

o
Distributed
C
ache 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"

pro
viderName
="CacheProviderName "

%>



Usage of Different cache providers for different pages:


public

override

string

GetOutputCacheProviderName(
HttpCo
ntext

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"

sqlConnecti
onString="data
source=local Initial
Catalog=
TestDB
“
allowCustomSqlDatabase
="true"

compressionE
nabled="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

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


Example
:

Response.RedirectPermanent("newlocation/p
age.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.Routing

public Route MapPageRoute(
string

routeName
,
string

routeUrl,
string

physicalFile,
bool

checkPhysicalUrlAccess, RouteValueDictionary
defaults )

Example
:

routes.MapPageRoute("","Category
/{action}/{
ca
tegoryName
}"
,
"~/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 types


An unlimited number of chart
areas,titles
,
legends, and annotations


3
-
D support for most chart types


Strip Lines, scale breaks, and
logarithimic

scaling


Simple binding and manipulation of chart data.


State management


Binary streaming


Support for common data formats, such as date,
time and currency.




THANK YOU !!