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.NET Framework 4.5

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System

_AppDomain Interface

AccessViolationException Class

Action Delegate

Action(T) Delegate

Action(T1, T2) Delegate

Action(T1, T2, T3) Delegate

Action(T1, T2, T3, T4) Delegate

Action(T1, T2, T3, T4, T5) Delegate

Action(T1, T2, T3, T4, T5, T6) Delegate

Action(T1, T2, T3, T4, T5, T6, T7) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) Delegate

Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16) Delegate

ActivationContext Class

ActivationContext.ContextForm Enumeration

Activator Class

AggregateException Class

AppDomain Class

AppDomainInitializer Delegate

AppDomainManager Class

AppDomainManagerInitializationOptions Enumeration

AppDomainSetup Class

AppDomainUnloadedException Class

ApplicationException Class

ApplicationId Class

ApplicationIdentity Class

ArgIterator Structure

ArgumentException Class

ArgumentNullException Class

ArgumentOutOfRangeException Class

ArithmeticException Class

Array Class

ArraySegment(T) Structure

ArrayTypeMismatchException Class

AssemblyLoadEventArgs Class

AssemblyLoadEventHandler Delegate

AsyncCallback Delegate

Attribute Class

AttributeTargets Enumeration

AttributeUsageAttribute Class

BadImageFormatException Class

Base64FormattingOptions Enumeration

BitConverter Class

Boolean Structure

Buffer Class

CannotUnloadAppDomainException Class

CharEnumerator Class

CLSCompliantAttribute Class

Comparison(T) Delegate

Console Class

ConsoleCancelEventArgs Class

ConsoleCancelEventHandler Delegate

ConsoleColor Enumeration

ConsoleKey Enumeration

ConsoleKeyInfo Structure

ConsoleModifiers Enumeration

ConsoleSpecialKey Enumeration

ContextBoundObject Class

ContextMarshalException Class

ContextStaticAttribute Class

Convert Class

Converter(TInput, TOutput) Delegate

CrossAppDomainDelegate Delegate

DataMisalignedException Class

DateTime Structure

DateTimeKind Enumeration

DateTimeOffset Structure

DayOfWeek Enumeration

DBNull Class

Decimal Structure

DivideByZeroException Class

DllNotFoundException Class

Double Structure

DuplicateWaitObjectException Class

EntryPointNotFoundException Class

Enum Class

Environment Class

Environment.SpecialFolder Enumeration

Environment.SpecialFolderOption Enumeration

EnvironmentVariableTarget Enumeration

EventArgs Class

EventHandler Delegate

EventHandler(TEventArgs) Delegate

Exception Class

ExecutionEngineException Class

FieldAccessException Class

FileStyleUriParser Class

FlagsAttribute Class

FormatException Class

FtpStyleUriParser Class

Func(TResult) Delegate

Func(T, TResult) Delegate

Func(T1, T2, TResult) Delegate

Func(T1, T2, T3, TResult) Delegate

Func(T1, T2, T3, T4, TResult) Delegate

Func(T1, T2, T3, T4, T5, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, TResult) Delegate

Func(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, TResult) Delegate

GC Class

GCCollectionMode Enumeration

GCNotificationStatus Enumeration

GenericUriParser Class

GenericUriParserOptions Enumeration

GopherStyleUriParser Class

HttpStyleUriParser Class

IAppDomainSetup Interface

IAsyncResult Interface

ICloneable Interface

IComparable Interface

IComparable(T) Interface

IConvertible Interface

ICustomFormatter Interface

IDisposable Interface

IEquatable(T) Interface

IFormatProvider Interface

IFormattable Interface

IndexOutOfRangeException Class

InsufficientExecutionStackException Class

InsufficientMemoryException Class

Int16 Structure

Int32 Structure

Int64 Structure

IntPtr Structure

InvalidCastException Class

InvalidOperationException Class

InvalidProgramException Class

InvalidTimeZoneException Class

IObservable(T) Interface

IObserver(T) Interface

IProgress(T) Interface

IServiceProvider Interface

Lazy(T) Class

Lazy(T, TMetadata) Class

LdapStyleUriParser Class

LoaderOptimization Enumeration

LoaderOptimizationAttribute Class

LocalDataStoreSlot Class

MarshalByRefObject Class

Math Class

MemberAccessException Class

MethodAccessException Class

MidpointRounding Enumeration

MissingFieldException Class

MissingMemberException Class

MissingMethodException Class

ModuleHandle Structure

MTAThreadAttribute Class

MulticastDelegate Class

MulticastNotSupportedException Class

NetPipeStyleUriParser Class

NetTcpStyleUriParser Class

NewsStyleUriParser Class

NonSerializedAttribute Class

NotFiniteNumberException Class

NotImplementedException Class

NotSupportedException Class

Nullable(T) Structure

NullReferenceException Class

Object Class

ObjectDisposedException Class

ObsoleteAttribute Class

OperatingSystem Class

OperationCanceledException Class

OutOfMemoryException Class

OverflowException Class

ParamArrayAttribute Class

PlatformID Enumeration

PlatformNotSupportedException Class

Predicate(T) Delegate

Progress(T) Class

Random Class

RankException Class

ResolveEventArgs Class

ResolveEventHandler Delegate

RuntimeArgumentHandle Structure

RuntimeFieldHandle Structure

RuntimeMethodHandle Structure

RuntimeTypeHandle Structure

SByte Structure

SerializableAttribute Class

Single Structure

StackOverflowException Class

STAThreadAttribute Class

String Class

StringComparer Class

StringComparison Enumeration

StringSplitOptions Enumeration

SystemException Class

ThreadStaticAttribute Class

TimeoutException Class

TimeSpan Structure

TimeZoneInfo Class

TimeZoneInfo.AdjustmentRule Class

TimeZoneInfo.TransitionTime Structure

TimeZoneNotFoundException Class

Tuple Class

Tuple(T1) Class

Tuple(T1, T2) Class

Tuple(T1, T2, T3) Class

Tuple(T1, T2, T3, T4) Class

Tuple(T1, T2, T3, T4, T5) Class

Tuple(T1, T2, T3, T4, T5, T6) Class

Tuple(T1, T2, T3, T4, T5, T6, T7) Class

Tuple(T1, T2, T3, T4, T5, T6, T7, TRest) Class

Type Class

TypeAccessException Class

TypeCode Enumeration

TypedReference Structure

TypeInitializationException Class

TypeLoadException Class

TypeUnloadedException Class

UInt16 Structure

UInt32 Structure

UInt64 Structure

UIntPtr Structure

UnauthorizedAccessException Class

UnhandledExceptionEventArgs Class

UnhandledExceptionEventHandler Delegate

Uri Class

UriBuilder Class

UriComponents Enumeration

UriFormat Enumeration

UriFormatException Class

UriHostNameType Enumeration

UriIdnScope Enumeration

UriKind Enumeration

UriParser Class

UriPartial Enumeration

UriTemplate Class

UriTemplateEquivalenceComparer Class

UriTemplateMatch Class

UriTemplateMatchException Class

UriTemplateTable Class

UriTypeConverter Class

ValueType Class

Version Class

WeakReference Class

WeakReference(T) Class

WindowsRuntimeSystemExtensions Class

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Environment.SpecialFolderOption Enumeration

.NET Framework 4.5

.NET Framework 4

Specifies options to use for getting the path to a special folder.

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

public enum SpecialFolderOption

	Member name	Description
	None	The path to the folder is verified. If the folder exists, the path is returned. If the folder does not exist, an empty string is returned. This is the default behavior.
	Create	The path to the folder is created if it does not already exist.
	DoNotVerify	The path to the folder is returned without verifying whether the path exists. If the folder is located on a network, specifying this option can reduce lag time.

The System.Environment.SpecialFolderOption enumeration is used to define the precise behavior of the Environment.GetFolderPath method.

Version Information

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

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 Namespace

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