The .NET Framework 4 provides a consistent API for developing managed code applications across different platforms like devices, web, and servers. It includes many new classes and features compared to previous versions. Developers can use the .NET Framework to write rich applications that run on multiple browsers and devices using Microsoft Silverlight. The framework download includes a smaller client profile for most desktop applications.

1. For more information on .NET Framework 4, please visit
the .NET Framework Developer Center at
http://msdn.microsoft.com/netframework.
The .NET Framework 4 provides the classes developers need to create managed code applications for de-
vices, windows, the Web, and servers and services. The .NET Framework provides a consistent API across dif-
ferent deployment platforms including servers, desktop applications, and mobile devices. With Microsoft
Silverlight™, .NET developers can write rich applications that run across platforms and browsers. The .NET
Framework is available as a Client Profile download that provides the functionality for most desktop applica-
tions with a download size that is 50 to 80 percent of the size of the complete Framework download.
System.Web.UI
CompositeScriptReference Updated
System.Web.UI.DataVisualization.Charting
Annotation NEW
Axis NEW
Chart NEW
ChartArea NEW
DataPoint NEW
Legend NEW
Series NEW
System.Web.UI.WebControls
EntityDataSource Updated
Ajax
Sys.Binding NEW
Sys.Observer NEW
Sys.UI.DataView NEW
Sys.UI.Template NEW
System.Web.DynamicData
DynamicControl Updated
DynamicDataManager Updated
DynamicField Updated
System.Web.Mvc
ActionResult NEW
Controller NEW
IViewEngine NEW
ViewPage NEW
System.Web.Routing
Route Updated
RouteTable Updated
CP
CP
CP
CP
CP
SL
SL
SL
CP
CP
CP
CP
SL
SL
SL
CP
CP
CP
SL
SL
SL
SL
SL
SL
System.Windows
VisualState NEW
VisualStateGroup NEW
VisualStateManager NEW
System.Windows.Controls
Calendar NEW
DataGrid NEW
DatePicker NEW
WebBrowser Updated
System.Windows.Input
TouchPoint NEW
TouchPointCollection NEW
TouchDevice NEW
System.Windows.Interop
ActiveXHost Updated
D3dImage Updated
System.Windows.Media.Effects
Effect Updated
PixelShader Updated
ShaderEffect Updated
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
System.Data
EntityKey Updated
IExtendedDataRecord Updated
System.Data.Common.CommandTrees
DbCommandTree Updated
DbExpression Updated
DbQueryCommandTree Updated
System.Data.Common.CommandTrees.
ExpressionBuilder
DbExpressionBuilder Updated
System.Data.EntityClient
EntityCommand Updated
EntityConnection Updated
EntityDataReader Updated
EntityTransaction Updated
System.Data.Metadata.Edm
ComplexType Updated
EdmType Updated
EntityType Updated
RelationshipType Updated
System.Data.Objects
CompiledQuery Updated
ObjectContext Updated
ObjectParameter Updated
ObjectQuery Updated
ObjectStateManager Updated
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
System.Activities
Activity NEW
Argument NEW
Variable NEW
WorkflowApplication NEW
WorkflowInvoker NEW
System.Activities.DurableInstancing
SqlWorkflowInstanceStore NEW
System.Activities.Persistence
PersistenceParticipant NEW
System.Activities.Presentation
ActivityDesigner NEW
EditingContext NEW
IActivityTemplateFactory NEW
WorkflowDesigner NEW
WorkflowItemPresenter NEW
WorkflowItemsPresenter NEW
WorkflowViewElement NEW
System.Activities.Presentation.Metadata
IRegisterMetadata NEW
MetadataStore NEW
System.Activities.Presentation.Model
ModelItem NEW
ModelProperty NEW
ModelTreeManager NEW
System.Activities.Presentation.Services
ModelService NEW
ViewService NEW
System.Activities.Presentation.View
ExpressionTextBox NEW
WorkflowViewStateService NEW
System.Activities.Statements
Flowchart NEW
If NEW
Parallel NEW
Sequence NEW
While NEW
System.Activities.Tracking
EtwTrackingParticipant NEW
TrackingProfile NEW
CP
System.ServiceModel
CorrelationQuery Updated
MessageQuerySet Updated
System.ServiceModel.Activities
CorrelationScope NEW
Receive / ReceiveReply NEW
Send / SendReply NEW
WorkflowControlEndpoint NEW
WorkflowServiceHost NEW
WorkflowService NEW
System.ServiceModel.Activities.
Description
SqlWorkflowInstanceStoreBehavior NEW
WorkflowIdleBehavior NEW
WorkflowUnhandledExceptionBehavior
NEW
BufferedReceiveServiceBehavior NEW
System.ServiceModel.DomainService
DomainService NEW
LinqToEntitiesDomainService NEW
LinqToSqlDomainService NEW
System.ServiceModel.Discovery
AnnouncementClient NEW
AnnouncementService NEW
DiscoveryClient NEW
ServiceDiscoveryBehavior NEW
System.ServiceModel.Routing
RoutingService NEW
RoutingBehavior NEW
RoutingConfiguration NEW
System.ServiceModel.Channels
ByteStreamMessageEncodingBindingElement
Updated
System.ServiceModel.Web
AspNetCacheProfileAttribute NEW
WebHttpEndpoint NEW
WebFaultException NEW
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CPCP
CP
CP
CP
CP
SL
SL
SL
SL
SL
SL
SL
SL
SL
SL
SL
SL
ParallelProcessingXamlFundamentals
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
CP
System.ComponentModel.Composition
ExportAttribute NEW
ImportAttribute NEW
CreationPolicy
System.ComponentModel.Composition.
Hosting
CompositionContainer NEW
System.ComponentModel.Composition.
Primitives
ComposablePart NEW
Export NEW
System.ComponentModel.DataAnnotations
DataTypeAttribute Updated
RangeAttribute Updated
RegularExpressionAttribute Updated
RequiredAttribute Updated
UIHintAttribute Updated
ValidationAttribute Updated
ManagedExtensibilityFramework
System.Collections.Generic
SortedSet NEW
Microsoft.IdentityModel.Claims
ClaimsPrincipal/IClaimsPrincipal NEW
ClaimsIdentity/IClaimsIdentity NEW
Claim NEW
Microsoft.IdentityModel.Protocols.
WSFederation
WSFederationSerializer NEW
WSFederationMessage NEW
Microsoft.IdentityModel.Protocols.
WSFederation.Metadata
MetadataSerializer NEW
Microsoft.IdentityModel.Protocols.
WSTrust
WSTrustChannel NEW
WSTrustChannelFactory NEW
Microsoft.IdentityModel.Protocols.
WSTrust.Bindings
CertificateWSTrustBinding NEW
IssuedTokenWSTrustBinding NEW
KerberosWSTrustBinding NEW
Microsoft.IdentityModel.SecurityToken
Service
SecurityTokenService NEW
Microsoft.IdentityModel.Tokens
IssuerNameRegistry NEW
IssuerTokenResolver NEW
Saml11SecurityTokenHandler NEW
Saml2SecurityTokenHandler NEW
Microsoft.IdentityModel.Web
WSFederationAuthenticationModule NEW
SessionAuthenticationModule NEW
ClaimsAuthorizationModule NEW
Microsoft.IdentityModel.Web.Controls
FederatedPassiveSignIn NEW
FederatedPassiveSignInStatus NEW
Part Number: 098-115952
System.Data.Services
DataService Updated
DataServiceConfiguration NEW
DataServiceOperationContext NEW
DataServiceException Updated
IDataServiceHost2 NEW
QueryInterceptorAttribute
System.Data.Services.Common
DataServiceEntityAttribute NEW
EntityPropertyMappingAttribute NEW
HasStreamAttribute NEW
System.Data.Services.Client
DataServiceContext
DataServiceCollection NEW
DataServiceQuery
DataServiceRequest
DataServiceResponse
DataServiceStreamResponse NEW
System.Data.Services.Provider
IDataServiceMetadataProvider NEW
IDataServiceQueryProvider NEW
IDataServiceUpdateProvider NEW
IDataServiceStreamProvider NEW
SL
SL
SL
SL
SL
SL
CP
CP
CP
CP
CP
CP
CP
CP
CP
System.IO.MemoryMappedFiles
System.Numerics
BigInteger NEW
Complex NEW
System.Runtime.InteropServices
TypeIdentifierAttribute NEW
System.Collections.Concurrent
System.Linq
ParallelEnumerable NEW
System.Threading
LazyInitializer NEW
SpinLock NEW
System.Threading.Tasks
Parallel NEW
System.Xaml
XamlReader NEW
XamlWriter NEW
XamlType NEW
CP Client Profile
SL Silverlight