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.NET Framework 4.5

.NET Framework Class Library

System.Diagnostics Namespaces

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BooleanSwitch Class

ConditionalAttribute Class

ConsoleTraceListener Class

CorrelationManager Class

CounterCreationData Class

CounterCreationDataCollection Class

CounterSample Structure

CounterSampleCalculator Class

DataReceivedEventArgs Class

DataReceivedEventHandler Delegate

Debug Class

DebuggableAttribute Class

DebuggableAttribute.DebuggingModes Enumeration

DebuggerBrowsableAttribute Class

DebuggerBrowsableState Enumeration

DebuggerDisplayAttribute Class

DebuggerHiddenAttribute Class

DebuggerNonUserCodeAttribute Class

DebuggerStepperBoundaryAttribute Class

DebuggerStepThroughAttribute Class

DebuggerTypeProxyAttribute Class

DebuggerVisualizerAttribute Class

DefaultTraceListener Class

DelimitedListTraceListener Class

DiagnosticsConfigurationHandler Class

EntryWrittenEventArgs Class

EntryWrittenEventHandler Delegate

EventInstance Class

EventLogEntry Class

EventLogEntryCollection Class

EventLogEntryType Enumeration

EventLogInstaller Class

EventLogPermission Class

EventLogPermissionAccess Enumeration

EventLogPermissionAttribute Class

EventLogPermissionEntry Class

EventLogPermissionEntryCollection Class

EventLogTraceListener Class

EventSchemaTraceListener Class

EventSourceCreationData Class

EventTypeFilter Class

FileVersionInfo Class

ICollectData Interface

InstanceData Class

InstanceDataCollection Class

InstanceDataCollectionCollection Class

MonitoringDescriptionAttribute Class

OverflowAction Enumeration

PerformanceCounter Class

PerformanceCounterCategory Class

PerformanceCounterCategoryType Enumeration

PerformanceCounterInstaller Class

PerformanceCounterInstanceLifetime Enumeration

PerformanceCounterManager Class

PerformanceCounterPermission Class

PerformanceCounterPermissionAccess Enumeration

PerformanceCounterPermissionAttribute Class

PerformanceCounterPermissionEntry Class

PerformanceCounterPermissionEntryCollection Class

PerformanceCounterType Enumeration

PresentationTraceLevel Enumeration

PresentationTraceSources Class

Process Class

ProcessModule Class

ProcessModuleCollection Class

ProcessPriorityClass Enumeration

ProcessStartInfo Class

ProcessThread Class

ProcessThreadCollection Class

ProcessWindowStyle Enumeration

SourceFilter Class

SourceLevels Enumeration

SourceSwitch Class

StackFrame Class

StackTrace Class

Stopwatch Class

Switch Class

SwitchAttribute Class

SwitchLevelAttribute Class

TextWriterTraceListener Class

ThreadPriorityLevel Enumeration

ThreadState Enumeration

ThreadWaitReason Enumeration

Trace Class

TraceEventCache Class

TraceEventType Enumeration

TraceFilter Class

TraceLevel Enumeration

TraceListener Class

TraceListenerCollection Class

TraceLogRetentionOption Enumeration

TraceOptions Enumeration

TraceSource Class

TraceSwitch Class

UnescapedXmlDiagnosticData Class

XmlWriterTraceListener Class

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ThreadPriorityLevel Enumeration

.NET Framework 4.5

Specifies the priority level of a thread.

Namespace: System.Diagnostics
Assembly: System (in System.dll)

public enum ThreadPriorityLevel

	Member name	Description
	AboveNormal	Specifies one step above the normal priority for the associated ProcessPriorityClass.
	BelowNormal	Specifies one step below the normal priority for the associated ProcessPriorityClass.
	Highest	Specifies highest priority. This is two steps above the normal priority for the associated ProcessPriorityClass.
	Idle	Specifies idle priority. This is the lowest possible priority value of all threads, independent of the value of the associated ProcessPriorityClass.
	Lowest	Specifies lowest priority. This is two steps below the normal priority for the associated ProcessPriorityClass.
	Normal	Specifies normal priority for the associated ProcessPriorityClass.
	TimeCritical	Specifies time-critical priority. This is the highest priority of all threads, independent of the value of the associated ProcessPriorityClass.

Every thread has a base-priority level determined by the thread's priority value and the priority class of its process. The operating system uses the base-priority level of all executable threads to determine which thread gets the next slice of processor time.

The priority level is not an absolute value, but instead is a range of priority values. The operating system computes the priority by using the process priority class to determine where, in the range specified by the PriorityLevel property, to set the thread's priority.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

System.Diagnostics Namespace

ProcessThread.PriorityLevel

ProcessPriorityClass

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