| .gif) | HeartbeatEventArgs | Provides data for the HeartBeat event. | 
| .gif) | InvalidLoadProfileException | This class represents an Exception that occurs when a load test plug-in attempts to assign the LoadProfile property of the LoadTestScenario to a LoadTestLoadProfile with an invalid or inconsistent set of property values. | 
| .gif) | LoadTest | Represents the load test being run. | 
| .gif) | LoadTestAbortedEventArgs | Provides data for the LoadTestAborted event. | 
| .gif) | LoadTestConstantLoadProfile | Represents the load profile of a load test that has a constant load pattern. | 
| .gif) | LoadTestContext | Encapsulates information about the context in which the load test is running. | 
| .gif) | LoadTestGoalBasedLoadProfile | Represents the load profile of a load test that has a goal-based load pattern. | 
| .gif) | LoadTestLoadProfile | Provides an abstract base class for load test profiles. | 
| .gif) | LoadTestPackageExt | Manages the Web test result viewer user interface. | 
| .gif) | LoadTestRunIdNotSetException | The exception that is thrown when a user attempts to access the load test run ID before the run ID has been set. | 
| .gif) | LoadTestRunSettings | Describes the load test run settings in use for the current load test run, as defined in the Load Test Editor. | 
| .gif) | LoadTestScenario | Represents a scenario that is contained in a load test. | 
| .gif) | LoadTestStepLoadProfile | Represents the load profile of a load test that has a step load pattern. | 
| .gif) | LoadTestUserContext | Encapsulates information about the user context in which a test is running, in a load test. | 
| .gif) | PerformanceCounterValue | Contains the computed value of a performance counter collected during a load test run. | 
| .gif) | TestFinishedEventArgs | Provides data for the TestFinished event. | 
| .gif) | TestIterationResult | Describes the result of running an individual test case within a load test. | 
| .gif) | TestSelectedEventArgs | Contains the arguments for the TestSelected event. | 
| .gif) | TestStartingEventArgs | Contains the arguments for the TestStarting event. | 
| .gif) | ThresholdExceededEventArgs | Provides data for the ThresholdExceeded event. | 
| .gif) | WebTestBaseExt | Base class for Web test windows that enable users to select items. | 
| .gif) | WebTestResultViewer | Wraps a Web test playback window. | 
| .gif) | WebTestResultViewerExt | Represents the Web test playback windows. | 
| .gif) | WebTestResultViewerExt.SelectionChangedEventArgs | Provides data for the SelectionChanged event. | 
| .gif) | WebTestResultViewerExt.TestCompletedEventArgs | Provides data for the TestCompleted event. | 
| .gif) | WebTestResultViewerExt.WindowClosedEventArgs | Provides data for the WndowClosed event. | 
| .gif) | WebTestResultViewerExt.WindowCreatedEventArgs | Provides data for the WindowCreated event. |