MethodInfo Class

Definition

Namespace:

System.Reflection

Assembly:

System.Runtime.dll

Source:

MethodInfo.cs

Discovers the attributes of a method and provides access to method metadata.

public ref class MethodInfo abstract : System::Reflection::MethodBase

public abstract class MethodInfo : System.Reflection.MethodBase

type MethodInfo = class
    inherit MethodBase

Public MustInherit Class MethodInfo
Inherits MethodBase

Inheritance

Object

MemberInfo

MethodBase

MethodInfo

Derived

Microsoft.JScript.JSMethod

Microsoft.JScript.JSMethodInfo

System.Reflection.Emit.DynamicMethod

System.Reflection.Emit.MethodBuilder

Remarks

The MethodInfo class represents a method of a type. You can use a MethodInfo object to obtain information about the method that the object represents and to invoke the method. For example:

• You can determine the method's visibility by retrieving the values of the IsFamilyAndAssembly, IsFamilyOrAssembly, IsPrivate, and IsPublic properties.

• You can discover what attributes are applied to the method by retrieving the value of the Attributes property or calling the GetCustomAttributes method.

• You can determine whether the method is a generic method, an open constructed generic method, or a closed constructed generic method, by retrieving the values of the IsGenericMethod and ContainsGenericParameters properties.

• You can get information about the method's parameters and return type from the GetParameters method and the ReturnParameter, ReturnType, and ReturnTypeCustomAttributes properties.

• You can execute a method on a class instance by calling the Invoke method.

• You can instantiate a MethodInfo object that represents a constructed generic method from one that represents a generic method definition by calling the MakeGenericMethod method.

You can instantiate a MethodInfo instances by calling the Type.GetMethods or Type.GetMethod method, or by calling the MethodInfo.MakeGenericMethod method of a MethodInfo object that represents a generic method definition.

For a list of the invariant conditions for terms specific to generic methods, see the IsGenericMethod property. For a list of the invariant conditions for other terms used in generic reflection, see the IsGenericType property.

Notes to Implementers

When you inherit from MethodInfo, you must override GetBaseDefinition(), ReturnType, ReturnTypeCustomAttributes, GetParameters(), GetMethodImplementationFlags(), MethodHandle, Attributes, Invoke(Object, BindingFlags, Binder, Object[], CultureInfo), Name, MemberType, DeclaringType, ReflectedType, GetCustomAttributes(Boolean), GetCustomAttributes(Type, Boolean), and IsDefined(Type, Boolean).

Constructors

MethodInfo()

Initializes a new instance of the MethodInfo class.

Properties

Attributes	Gets the attributes associated with this method. (Inherited from MethodBase)
CallingConvention	Gets a value indicating the calling conventions for this method. (Inherited from MethodBase)
ContainsGenericParameters	Gets a value indicating whether the generic method contains unassigned generic type parameters. (Inherited from MethodBase)
CustomAttributes	Gets a collection that contains this member's custom attributes. (Inherited from MemberInfo)
DeclaringType	Gets the class that declares this member. (Inherited from MemberInfo)
IsAbstract	Gets a value indicating whether the method is abstract. (Inherited from MethodBase)
IsAssembly	Gets a value indicating whether the potential visibility of this method or constructor is described by Assembly; that is, the method or constructor is visible at most to other types in the same assembly, and is not visible to derived types outside the assembly. (Inherited from MethodBase)
IsCollectible	Gets a value that indicates whether this MemberInfo object is part of an assembly held in a collectible AssemblyLoadContext. (Inherited from MemberInfo)
IsConstructedGenericMethod	(Inherited from MethodBase)
IsConstructor	Gets a value indicating whether the method is a constructor. (Inherited from MethodBase)
IsFamily	Gets a value indicating whether the visibility of this method or constructor is described by Family; that is, the method or constructor is visible only within its class and derived classes. (Inherited from MethodBase)
IsFamilyAndAssembly	Gets a value indicating whether the visibility of this method or constructor is described by FamANDAssem; that is, the method or constructor can be called by derived classes, but only if they are in the same assembly. (Inherited from MethodBase)
IsFamilyOrAssembly	Gets a value indicating whether the potential visibility of this method or constructor is described by FamORAssem; that is, the method or constructor can be called by derived classes wherever they are, and by classes in the same assembly. (Inherited from MethodBase)
IsFinal	Gets a value indicating whether this method is final. (Inherited from MethodBase)
IsGenericMethod	Gets a value indicating whether the method is generic. (Inherited from MethodBase)
IsGenericMethodDefinition	Gets a value indicating whether the method is a generic method definition. (Inherited from MethodBase)
IsHideBySig	Gets a value indicating whether only a member of the same kind with exactly the same signature is hidden in the derived class. (Inherited from MethodBase)
IsPrivate	Gets a value indicating whether this member is private. (Inherited from MethodBase)
IsPublic	Gets a value indicating whether this is a public method. (Inherited from MethodBase)
IsSecurityCritical	Gets a value that indicates whether the current method or constructor is security-critical or security-safe-critical at the current trust level, and therefore can perform critical operations. (Inherited from MethodBase)
IsSecuritySafeCritical	Gets a value that indicates whether the current method or constructor is security-safe-critical at the current trust level; that is, whether it can perform critical operations and can be accessed by transparent code. (Inherited from MethodBase)
IsSecurityTransparent	Gets a value that indicates whether the current method or constructor is transparent at the current trust level, and therefore cannot perform critical operations. (Inherited from MethodBase)
IsSpecialName	Gets a value indicating whether this method has a special name. (Inherited from MethodBase)
IsStatic	Gets a value indicating whether the method is static. (Inherited from MethodBase)
IsVirtual	Gets a value indicating whether the method is virtual. (Inherited from MethodBase)
MemberType	Gets a MemberTypes value indicating that this member is a method.
MetadataToken	Gets a value that identifies a metadata element. (Inherited from MemberInfo)
MethodHandle	Gets a handle to the internal metadata representation of a method. (Inherited from MethodBase)
MethodImplementationFlags	Gets the MethodImplAttributes flags that specify the attributes of a method implementation. (Inherited from MethodBase)
Module	Gets the module in which the type that declares the member represented by the current MemberInfo is defined. (Inherited from MemberInfo)
Name	Gets the name of the current member. (Inherited from MemberInfo)
ReflectedType	Gets the class object that was used to obtain this instance of MemberInfo. (Inherited from MemberInfo)
ReturnParameter	Gets a ParameterInfo object that contains information about the return type of the method, such as whether the return type has custom modifiers.
ReturnType	Gets the return type of this method.
ReturnTypeCustomAttributes	Gets the custom attributes for the return type.

Methods

CreateDelegate(Type)	Creates a delegate of the specified type from this method.
CreateDelegate(Type, Object)	Creates a delegate of the specified type with the specified target from this method.
CreateDelegate<T>()	Creates a delegate of type T from this method.
CreateDelegate<T>(Object)	Creates a delegate of type T with the specified target from this method.
Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object.
GetBaseDefinition()	When overridden in a derived class, returns the MethodInfo object for the method on the direct or indirect base class in which the method represented by this instance was first declared.
GetCustomAttributes(Boolean)	When overridden in a derived class, returns an array of all custom attributes applied to this member. (Inherited from MemberInfo)
GetCustomAttributes(Type, Boolean)	When overridden in a derived class, returns an array of custom attributes applied to this member and identified by Type. (Inherited from MemberInfo)
GetCustomAttributesData()	Returns a list of CustomAttributeData objects representing data about the attributes that have been applied to the target member. (Inherited from MemberInfo)
GetGenericArguments()	Returns an array of Type objects that represent the type arguments of a generic method or the type parameters of a generic method definition.
GetGenericMethodDefinition()	Returns a MethodInfo object that represents a generic method definition from which the current method can be constructed.
GetHashCode()	Returns the hash code for this instance.
GetMethodBody()	When overridden in a derived class, gets a MethodBody object that provides access to the MSIL stream, local variables, and exceptions for the current method. (Inherited from MethodBase)
GetMethodImplementationFlags()	When overridden in a derived class, returns the MethodImplAttributes flags. (Inherited from MethodBase)
GetParameters()	When overridden in a derived class, gets the parameters of the specified method or constructor. (Inherited from MethodBase)
GetType()	(Inherited from MethodBase)
HasSameMetadataDefinitionAs(MemberInfo)	(Inherited from MemberInfo)
Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)	When overridden in a derived class, invokes the reflected method or constructor with the given parameters. (Inherited from MethodBase)
Invoke(Object, Object[])	Invokes the method or constructor represented by the current instance, using the specified parameters. (Inherited from MethodBase)
IsDefined(Type, Boolean)	When overridden in a derived class, indicates whether one or more attributes of the specified type or of its derived types is applied to this member. (Inherited from MemberInfo)
MakeGenericMethod(Type[])	Substitutes the elements of an array of types for the type parameters of the current generic method definition, and returns a MethodInfo object representing the resulting constructed method.
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Operators

Equality(MethodInfo, MethodInfo)	Indicates whether two MethodInfo objects are equal.
Inequality(MethodInfo, MethodInfo)	Indicates whether two MethodInfo objects are not equal.

Extension Methods

GetCustomAttribute(MemberInfo, Type)	Retrieves a custom attribute of a specified type that is applied to a specified member.
GetCustomAttribute(MemberInfo, Type, Boolean)	Retrieves a custom attribute of a specified type that is applied to a specified member, and optionally inspects the ancestors of that member.
GetCustomAttribute<T>(MemberInfo)	Retrieves a custom attribute of a specified type that is applied to a specified member.
GetCustomAttribute<T>(MemberInfo, Boolean)	Retrieves a custom attribute of a specified type that is applied to a specified member, and optionally inspects the ancestors of that member.
GetCustomAttributes(MemberInfo)	Retrieves a collection of custom attributes that are applied to a specified member.
GetCustomAttributes(MemberInfo, Boolean)	Retrieves a collection of custom attributes that are applied to a specified member, and optionally inspects the ancestors of that member.
GetCustomAttributes(MemberInfo, Type)	Retrieves a collection of custom attributes of a specified type that are applied to a specified member.
GetCustomAttributes(MemberInfo, Type, Boolean)	Retrieves a collection of custom attributes of a specified type that are applied to a specified member, and optionally inspects the ancestors of that member.
GetCustomAttributes<T>(MemberInfo)	Retrieves a collection of custom attributes of a specified type that are applied to a specified member.
GetCustomAttributes<T>(MemberInfo, Boolean)	Retrieves a collection of custom attributes of a specified type that are applied to a specified member, and optionally inspects the ancestors of that member.
IsDefined(MemberInfo, Type)	Indicates whether custom attributes of a specified type are applied to a specified member.
IsDefined(MemberInfo, Type, Boolean)	Indicates whether custom attributes of a specified type are applied to a specified member, and, optionally, applied to its ancestors.
GetMetadataToken(MemberInfo)	Gets a metadata token for the given member, if available.
HasMetadataToken(MemberInfo)	Returns a value that indicates whether a metadata token is available for the specified member.
GetBaseDefinition(MethodInfo)
GetRuntimeBaseDefinition(MethodInfo)	Retrieves an object that represents the specified method on the direct or indirect base class where the method was first declared.

Thread Safety

This type is thread safe.

See also

• GetMethods
• GetMethod
• IsGenericMethod