System.Runtime.CompilerServices Namespace

Specifies the name of the property that accesses the attributed field.

Indicates whether a method is an asynchronous iterator.

Indicates the type of the async method builder that should be used by a language compiler to build the attributed type when used as the return type of an async method.

Indicates whether a method is marked with either the Async or async modifier.

Indicates that a method should use the Cdecl calling convention.

This calling convention is not supported in this version of .NET.

Indicates that a method should use the StdCall calling convention.

Indicates that a method should use the ThisCall calling convention.

Allows capturing of the expressions passed to a method.

Allows you to obtain the full path of the source file that contains the caller. This is the file path at the time of compile.

Allows you to obtain the line number in the source file at which the method is called.

Allows you to obtain the method or property name of the caller to the method.

A dynamic call site base class. This type is used as a parameter type to the dynamic site targets.

Dynamic site type.

Class responsible for runtime binding of the dynamic operations on the dynamic call site.

Class that contains helper methods for DLR CallSites.

Creates and caches binding rules.

Represents the runtime state of a dynamically generated method.

Controls the strictness of the code generated by the common language runtime's just-in-time (JIT) compiler.

Distinguishes a compiler-generated element from a user-generated element. This class cannot be inherited.

Indicates that a class should be treated as if it has global scope.

Indicates that the modified instance of a variable differs from its true type when marshaling. This class cannot be inherited.

Enables compilers to dynamically attach object fields to managed objects.

Provides methods that the binary rewriter uses to handle contract failures.

Defines the inline namespace in C++/CLI.

Defines a constant value that a compiler can persist for a field or method parameter.

Persists an 8-byte DateTime constant for a field or parameter.

Generates debug information for lambda expressions in an expression tree.

Stores the value of a Decimal constant in metadata. This class cannot be inherited.

Provides a hint to the common language runtime (CLR) indicating how likely a dependency is to be loaded. This class is used in a dependent assembly to indicate what hint should be used when the parent does not specify the DependencyAttribute attribute. This class cannot be inherited.

Indicates when a dependency is to be loaded by the referring assembly. This class cannot be inherited.

Indicates that any private members contained in an assembly's types are not available to reflection.

Marks a type definition as discardable.

Indicates that the use of Object on a member is meant to be treated as a dynamically dispatched type.

Allows users of async-enumerable methods to mark the parameter that should receive the cancellation token value from GetAsyncEnumerator(CancellationToken).

Represents the runtime state of a dynamically generated method.

Indicates that a method is an extension method, or that a class or assembly contains extension methods.

Fixes the address of a static value type field throughout its lifetime. This class cannot be inherited.

Indicates that a field should be treated as containing a fixed number of elements of the specified primitive type. This class cannot be inherited.

Provides a static method to create a FormattableString object from a composite format string and its arguments.

This class is obsolete. This class cannot be inherited.

Indicates that the default value for the attributed field or parameter is an instance of DispatchWrapper, where the WrappedObject is null.

Indicates the name by which an indexer is known in programming languages that do not support indexers directly.

Specifies that types that are ordinarily visible only within the current assembly are visible to a specified assembly.

Indicates that the modified reference type is a boxed value type. This class cannot be inherited.

Indicates that a structure is byref-like.

Indicates that a modified method argument should be interpreted as having object passed-by-value semantics. This modifier is applied to reference types. This class cannot be inherited.

Indicates that the modified type has a const modifier. This class cannot be inherited.

Indicates that any copying of values of this type must use the copy constructor provided by the type. This class cannot be inherited.

Indicates that a managed pointer represents a pointer parameter within a method signature. This class cannot be inherited.

Reserved to be used by the compiler for tracking metadata. This class should not be used by developers in source code.

Indicates that the modified garbage collection reference represents a reference parameter within a method signature. This class cannot be inherited.

Indicates that a modified method is an intrinsic value for which the just-in-time (JIT) compiler can perform special code generation. This class cannot be inherited.

Indicates that a modified integer is a standard C++ long value. This class cannot be inherited.

Indicates that a modified instance is pinned in memory. This class cannot be inherited.

Marks a program element as read-only.

Indicates that a modifier is neither signed nor unsigned. This class cannot be inherited.

Indicates that a return type is a user-defined type. This class cannot be inherited.

Marks a field as volatile. This class cannot be inherited.

Indicates whether a method in Visual Basic is marked with the Iterator modifier.

Indicates that the default value for the attributed field or parameter is an instance of UnknownWrapper, where the WrappedObject is null. This class cannot be inherited.

Specifies the details of how a method is implemented. This class cannot be inherited.

Used to indicate to the compiler that a method should be called in its containing module's initializer.

Applies metadata to an assembly that indicates that a type is an unmanaged type. This class cannot be inherited.

Ensures that any virtual call to the method, whether it uses the base signature or derived signature of the method, executes the most derived override.

The builder for read only collection.

Identifies an assembly as a reference assembly, which contains metadata but no executable code.

Specifies that an importing compiler must fully understand the semantics of a type definition, or refuse to use it. This class cannot be inherited.

Represents a cache of runtime binding rules.

Specifies whether to wrap exceptions that do not derive from the Exception class with a RuntimeWrappedException object. This class cannot be inherited.

Defines APIs to determine whether specific features are supported by the common language runtime.

Provides a set of static methods and properties that provide support for compilers. This class cannot be inherited.

Contains helper methods called from dynamically generated methods.

Wraps an exception that does not derive from the Exception class. This class cannot be inherited.

Indicates that a native enumeration is not qualified by the enumeration type name. This class cannot be inherited.

Indicates to the compiler that the .locals init flag should not be set in nested method headers when emitting to metadata.

Indicates that a type or member is treated in a special way by the runtime or tools. This class cannot be inherited.

Allows you to determine whether a method is a state machine method.

Deprecated. Freezes a string literal when creating native images using the Ngen.exe (Native Image Generator). This class cannot be inherited.

Holds a reference to a value.

Prevents the Ildasm.exe (IL Disassembler) from disassembling an assembly. This class cannot be inherited.

Indicates that a switch expression that was non-exhaustive failed to match its input at runtime. The exception optionally contains an object representing the unmatched value.

Indicates that the use of a value tuple on a member is meant to be treated as a tuple with element names.

Specifies a source Type in another assembly.

Specifies a destination Type in another assembly.

Contains generic, low-level functionality for manipulating pointers.

Specifies that a type contains an unmanaged array that might potentially overflow. This class cannot be inherited.

Represents a builder for asynchronous iterators.

Represents a builder for asynchronous methods that return a task.

Represents a builder for asynchronous methods that returns a task and provides a parameter for the result.

Represents a builder for asynchronous methods that return a ValueTask.

Represents a builder for asynchronous methods that returns a ValueTask<TResult>.

Represents a builder for asynchronous methods that do not return a value.

Provides a type that can be used to configure how awaits on an IAsyncDisposable are performed.

Provides an awaitable async enumerator that enables cancelable iteration and configured awaits.

Provides an awaitable async enumerable that enables cancelable iteration and configured awaits.

Provides an awaitable object that enables configured awaits on a task.

Provides an awaiter for an awaitable (ConfiguredTaskAwaitable) object.

Provides an awaiter for an awaitable object(ConfiguredTaskAwaitable<TResult>).

Provides an awaitable object that enables configured awaits on a task.

Provides an awaitable type that enables configured awaits on a ValueTask.

Provides an awaiter for a ConfiguredValueTaskAwaitable.

Provides an awaiter for a ConfiguredValueTaskAwaitable<TResult>.

Provides an awaitable type that enables configured awaits on a ValueTask<TResult>.

Provides an object that waits for the completion of an asynchronous task.

Represents an object that waits for the completion of an asynchronous task and provides a parameter for the result.

Provides an awaiter for a ValueTask.

Provides an awaiter for a ValueTask<TResult>.

Provides the context for waiting when asynchronously switching into a target environment.

Provides an awaiter for switching into a target environment.

Represents state machines that are generated for asynchronous methods. This type is intended for compiler use only.

Represents an awaiter that schedules continuations when an await operation completes.

Represents an operation that schedules continuations when it completes.

Represents the values of run-time variables.

Defines a property for accessing the value that an object references.

Defines a general-purpose Tuple implementation that allows access to Tuple instance members without knowing the underlying Tuple type.

Specifies parameters that control the strictness of the code generated by the common language runtime's just-in-time (JIT) compiler.

Specifies the preferred default binding for a dependent assembly.

Defines how a method is implemented.

Specifies constants that define the details of how a method is implemented.

Represents a method that creates a non-default value to add as part of a key/value pair to a ConditionalWeakTable<TKey,TValue> object.

Represents a method to run when an exception occurs.

Represents a delegate to code that should be run in a try block.