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.NET framework class reference (C# & VB.NET)

This section details the assemblies which comprise the global assembly cache (GAC). Collectively, these namespaces form the .NET framework.

The book Network Programming in .NET (Buy at Amazon UK) (Buy at Amazon US) details how to use many of these namespaces, especially System.Web, System.Runtime.Remoting, System.NET and System.Messaging.

Click on a namespace to view its member types

New! .NET framework 2.0 assemblies

AspNetMMCExt
Microsoft.Build.Conversion
Microsoft.Build.Engine
Microsoft.Build.Framework
Microsoft.Build.Tasks
Microsoft.Build.Utilities
Microsoft.Build.VisualJSharp
Microsoft.VisualC.Dll
mscorlib
msmetabase
sysglobl
System.Data.SqlXml
System.Deployment
System.DirectoryServices.Protocols
System.Transactions
VJSharpCodeProvider.DLL
vjsjbc
vjssupuilib
Microsoft.VisualStudio.DebuggerVisualizers
sqlaccess
VsWebSite.Interop

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.NET framework 1.1 assemblies

Accessibility
ADODB
ADODBLib
aspNetEmail
AXLib
com.ms.com
com.ms.com.ILWrappers
com.ms.com.JCW
com.ms.dll
com.ms.jdbc.odbc
com.ms.lang
com.ms.util
com.ms.util.InputMethod
com.ms.vjsharp
com.ms.vjsharp.activeX
com.ms.vjsharp.beans
com.ms.vjsharp.beans.editors
com.ms.vjsharp.com
com.ms.vjsharp.cor
com.ms.vjsharp.debug
com.ms.vjsharp.io
com.ms.vjsharp.lang
com.ms.vjsharp.net
com.ms.vjsharp.object
com.ms.vjsharp.protocol.file
com.ms.vjsharp.protocol.ftp
com.ms.vjsharp.protocol.http
com.ms.vjsharp.protocol.resourcefile
com.ms.vjsharp.protocol.vjsres
com.ms.vjsharp.security
com.ms.vjsharp.security.provider
com.ms.vjsharp.struct
com.ms.vjsharp.text
com.ms.vjsharp.util
com.ms.vjsharp.util.zip
com.ms.vjsharp.win32
com.ms.vjsharp.windowing
com.ms.vjsharp.windowing.win32
com.ms.vjsharp.www.content
com.ms.wfc.app
com.ms.wfc.ax
com.ms.wfc.ax.JCW
com.ms.wfc.core
com.ms.wfc.data
com.ms.wfc.data.adodb
com.ms.wfc.data.adodb.JCW
com.ms.wfc.data.dsl
com.ms.wfc.data.dsl.JCW
com.ms.wfc.data.JCW
com.ms.wfc.data.rds
com.ms.wfc.data.rds.JCW
com.ms.wfc.data.ui
com.ms.wfc.html
com.ms.wfc.html.event
com.ms.wfc.html.om
com.ms.wfc.html.om.shdocvw
com.ms.wfc.html.om.shdocvw.WebBrowser
com.ms.wfc.io
com.ms.wfc.ole32
com.ms.wfc.ole32.JCW
com.ms.wfc.ui
com.ms.wfc.util
com.ms.wfc.win32
com.ms.win32
CRVsPackageLib
CrystalDecisions.CrystalReports.EMFServerMessageFactory
CrystalDecisions.CrystalReports.Engine
CrystalDecisions.CrystalReports.EPFPageObjectFactory
CrystalDecisions.CrystalReports.ETFTotallerTreeFactory
CrystalDecisions.CrystalReports.SCREventLog
CrystalDecisions.CrystalReports.TSLV
CrystalDecisions.CrystalReports.ViewerObjectModel
CrystalDecisions.ReportSource
CrystalDecisions.Shared
CrystalDecisions.Web
CrystalDecisions.Web.Design
CrystalDecisions.Web.Services
CrystalDecisions.Web.Services.Enterprise
CrystalDecisions.Windows.Forms
CrystalEnterpriseLib
CrystalInfoStoreLib
CrystalKeyCodeLib
CrystalPluginMgrLib
CrystalReportPluginLib
DATALib
EFTReflection
EmuCM
EnvDTE
Extensibility
IEHost.Execute
java.applet
java.awt
java.awt.datatransfer
java.awt.event
java.awt.image
java.awt.peer
java.beans
java.io
java.lang
java.lang.reflect
java.math
java.net
java.security
java.security.acl
java.security.interfaces
java.sql
java.text
java.util
java.util.zip
Microsoft.CLRAdmin
Microsoft.CSharp
Microsoft.IE
Microsoft.JScript
Microsoft.JScript.Vsa
Microsoft.MCpp
Microsoft.Office.Core
Microsoft.VisualBasic
Microsoft.VisualBasic.Compatibility.VB6
Microsoft.VisualBasic.CompilerServices
Microsoft.VisualBasic.Vsa
Microsoft.VisualC
Microsoft.VisualStudio.DeviceConnectivity
Microsoft.VisualStudio.DeviceConnectivity.ConManDataStoreStrings
Microsoft.VisualStudio.DeviceConnectivity.ConManServerStrings
Microsoft.VisualStudio.DeviceConnectivity.ConManStrings
Microsoft.VisualStudio.VCCodeModel
Microsoft.VisualStudio.VCProject
Microsoft.VisualStudio.VCProjectEngine
Microsoft.VisualStudio.VSHelp
Microsoft.VJSharp
Microsoft.Vsa
Microsoft.Vsa.Vb.CodeDOM
Microsoft.Web.Services
Microsoft.Web.Services.Configuration
Microsoft.Web.Services.Configuration.Install
Microsoft.Web.Services.Diagnostics
Microsoft.Web.Services.Diagnostics.Configuration
Microsoft.Web.Services.Dime
Microsoft.Web.Services.Referral
Microsoft.Web.Services.Referral.Configuration
Microsoft.Web.Services.Routing
Microsoft.Web.Services.Security
Microsoft.Web.Services.Security.Configuration
Microsoft.Web.Services.Security.X509
Microsoft.Web.Services.Timestamp
Microsoft.Win32
Microsoft.WindowsCE.Forms
Microsoft_VsaVb
msdatasrc
MSDDS
MSDDSLM
MSHTML
OLE32Lib
RDS
RegCode
SHDocVw
SoapSudsCode
StdFormat
stdole
System
System.CodeDom
System.CodeDom.Compiler
System.Collections.Specialized
System.ComponentModel
System.ComponentModel.Design
System.ComponentModel.Design.Serialization
System.Configuration
System.Configuration.Install
System.Data
System.Data.Common
System.Data.OleDb
System.Data.OracleClient
System.Data.SqlClient
System.Data.SqlTypes
System.Design
System.Diagnostics
System.Diagnostics.Design
System.Diagnostics.SymbolStore
System.DirectoryServices
System.DirectoryServices.Design
System.DirectoryServices.Interop
System.Drawing
System.Drawing.Design
System.Drawing.Drawing2D
System.Drawing.Imaging
System.Drawing.Internal
System.Drawing.Printing
System.Drawing.Text
System.EnterpriseServices
System.EnterpriseServices.Admin
System.EnterpriseServices.CompensatingResourceManager
System.EnterpriseServices.Internal
System.EnterpriseServices.Thunk
System.IO
System.Management
System.Management.Instrumentation
System.Messaging
System.Messaging.Design
System.Messaging.Interop
System.Net
System.Net.Configuration
System.Net.Sockets
System.Resources
System.Runtime.InteropServices.CustomMarshalers
System.Runtime.Remoting.Channels
System.Runtime.Remoting.Channels.Http
System.Runtime.Remoting.Channels.Tcp
System.Runtime.Remoting.MetadataServices
System.Runtime.Remoting.Services
System.Runtime.Serialization.Formatters.Soap
System.Security
System.Security.Cryptography.X509Certificates
System.Security.Cryptography.Xml
System.Security.Permissions
System.ServiceProcess
System.ServiceProcess.Design
System.Text.RegularExpressions
System.Threading
System.Timers
System.Web
System.Web.Caching
System.Web.Compilation
System.Web.Configuration
System.Web.Handlers
System.Web.Hosting
System.Web.InternalSamples
System.Web.Mail
System.Web.Mobile
System.Web.RegularExpressions
System.Web.Security
System.Web.Services
System.Web.Services.Configuration
System.Web.Services.Description
System.Web.Services.Discovery
System.Web.Services.Interop
System.Web.Services.Protocols
System.Web.SessionState
System.Web.UI
System.Web.UI.Design.MobileControls
System.Web.UI.Design.MobileControls.Adapters
System.Web.UI.Design.MobileControls.Converters
System.Web.UI.Design.MobileControls.Util
System.Web.UI.HtmlControls
System.Web.UI.MobileControls
System.Web.UI.MobileControls.Adapters
System.Web.UI.WebControls
System.Web.Util
System.Windows.Forms
System.Xml
System.Xml.Schema
System.Xml.Serialization
System.Xml.XPath
System.Xml.Xsl
System.Xml.Xsl.Debugger
TlbExpCode
TlbImpCode
TSInterop
Util
VSLangProj