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SourceLevels Enum


Specifies the levels of trace messages filtered by the source switch and event type filter.

This enumeration supports a bitwise combination of its member values.

public enum class SourceLevels
public enum SourceLevels
type SourceLevels = 
Public Enum SourceLevels


ActivityTracing 65280

Allows the Stop, Start, Suspend, Transfer, and Resume events through.

All -1

Allows all events through.

Critical 1

Allows only Critical events through.

Error 3

Allows Critical and Error events through.

Information 15

Allows Critical, Error, Warning, and Information events through.

Off 0

Does not allow any events through.

Verbose 31

Allows Critical, Error, Warning, Information, and Verbose events through.

Warning 7

Allows Critical, Error, and Warning events through.


The source levels identify the TraceEventType events that are to be traced. The SourceSwitch class uses the SourceLevels enumeration to define the event level of the trace message to use for filtering messages to send to the trace listener.

The EventTypeFilter class uses the SourceLevels enumeration to determine whether a trace listener should emit a trace.

Applies to