Note: This namespace is new in the .NET Framework version 2.0.

The Microsoft.Build.Framework namespace contains the types that define how tasks and loggers interact with the MSBuild engine.

 Classes

	Class	Description
	BuildErrorEventArgs	Provides data for the ErrorRaised event.
	BuildEventArgs	Provides data for the AnyEventRaised event.
	BuildFinishedEventArgs	Provides data for the BuildFinished event.
	BuildMessageEventArgs	Provides data for the MessageRaised event.
	BuildStartedEventArgs	Provides data for the BuildStarted event.
	BuildStatusEventArgs	Provides data for the StatusEventRaised event.
	BuildWarningEventArgs	Provides data for the WarningRaised event.
	CustomBuildEventArgs	Provides data for the CustomEventRaised event.
	ExternalProjectFinishedEventArgs	Provides data for the CustomEventRaised event.
	ExternalProjectStartedEventArgs	Provides data for the CustomEventRaised event.
	LoadInSeparateAppDomainAttribute	Defines the metadata attribute that MSBuild uses to identify tasks that must be executed in their own application domains.
	LoggerException	Allows a logger to force the build to stop in an explicit way.
	OutputAttribute	Defines the metadata attribute that task authors use to identify task properties that output data from the task.
	ProjectFinishedEventArgs	Provides data for the ProjectFinished event.
	ProjectStartedEventArgs	Provides data for the ProjectStarted event.
	RequiredAttribute	Defines the metadata attribute that task authors use to identify required task properties. Task properties with this attribute must have a set value when the task is run.
	TargetFinishedEventArgs	Initializes a new instance of the TargetFinishedEventArgs class.
	TargetStartedEventArgs	Provides data for the TargetStarted event.
	TaskCommandLineEventArgs	Provides data for the MessageRaised event.
	TaskFinishedEventArgs	Provides data for the TaskFinished event.
	TaskStartedEventArgs	Provides data for the TaskStarted event.

 Interfaces

	Interface	Description
	IBuildEngine	Provides a way for task authors to use a subset of the functionality of the MSBuild engine.
	IEventSource	Defines the events raised by the build engine. Loggers receive an object implementing this interface in their Initialize method and use it to subscribe to the events they are interested in receiving.
	ILogger	Defines an MSBuild logger, which subscribes to build system events.
	ITask	Defines a task, which is a unit of executable code used by MSBuild to perform build operations.
	ITaskHost	Passes host objects from an integrated development environment (IDE) to individual tasks.
	ITaskItem	Defines an MSBuild item that can be consumed and emitted by tasks.

 Delegates

	Delegate	Description
	AnyEventHandler	Represents the method that will handle the AnyEventRaised event of a build.
	BuildErrorEventHandler	Represents the method that will handle the ErrorRaised event of a build.
	BuildFinishedEventHandler	Represents the method that will handle the BuildFinished event of a build.
	BuildMessageEventHandler	Represents the method that will handle the MessageRaised event of a build.
	BuildStartedEventHandler	Represents the method that will handle the BuildStarted event of a build.
	BuildStatusEventHandler	Represents the method that will handle the StatusEventRaised event of a build.
	BuildWarningEventHandler	Represents the method that will handle the WarningRaised event of a build.
	CustomBuildEventHandler	Represents the method that will handle the CustomEventRaised event of a build.
	ProjectFinishedEventHandler	Represents the method that will handle the ProjectFinished event of a build.
	ProjectStartedEventHandler	Represents the method that will handle the ProjectStarted event of a build.
	TargetFinishedEventHandler	Represents the method that will handle the TargetFinished event of a build.
	TargetStartedEventHandler	Represents the method that will handle the TargetStarted event of a build.
	TaskFinishedEventHandler	Represents the method that will handle the TaskFinished event of a build.
	TaskStartedEventHandler	Represents the method that will handle the TaskStarted event of a build.

 Enumerations

	Enumeration	Description
	LoggerVerbosity	Specifies the available verbosity levels of a Logger.
	MessageImportance	Specifies constants that define the importance of a build message.