mscorlib.dll and System.dll Includes the core set of .NET data types, common exception
types, and numerous other fundamental building blocks.
System.Configuration.dll Includes classes for reading and writing configuration informationin the web.config file, including your custom settings.
System.Data.dll Includes the data container classes for ADO.NET, along with the SQL Server data provider.
System.Drawing.dll Includes classes representing colors, fonts, and shapes. Also includes the GDI+ drawing logic you need to build graphics on the fly.
System.Web.dll Includes the core ASP.NET classes, including classes for building web forms, managing state, handling security, and much more.
System.Web.Services.dll Includes classes for building web services—units of code that can be remotely invoked over HTTP.
System.Xml.dll Includes .NET classes for reading, writing, searching, transforming, and validating XML.
System.EnterpriseServices.dll Includes .NET classes for COM+ services such as transactions.
System.Web.Mobile.dll Includes .NET classes for the mobile web controls, which are
targeted for small devices such as web-enabled cell phones.
types, and numerous other fundamental building blocks.
System.Configuration.dll Includes classes for reading and writing configuration informationin the web.config file, including your custom settings.
System.Data.dll Includes the data container classes for ADO.NET, along with the SQL Server data provider.
System.Drawing.dll Includes classes representing colors, fonts, and shapes. Also includes the GDI+ drawing logic you need to build graphics on the fly.
System.Web.dll Includes the core ASP.NET classes, including classes for building web forms, managing state, handling security, and much more.
System.Web.Services.dll Includes classes for building web services—units of code that can be remotely invoked over HTTP.
System.Xml.dll Includes .NET classes for reading, writing, searching, transforming, and validating XML.
System.EnterpriseServices.dll Includes .NET classes for COM+ services such as transactions.
System.Web.Mobile.dll Includes .NET classes for the mobile web controls, which are
targeted for small devices such as web-enabled cell phones.