MemberInfo

MemberInfo Class

Represents a member of a type (field, method, property, event, or constructor) and provides methods for determining its attributes and obtaining information about it.

Namespace: System.Reflection

Assembly: System.Runtime

Inheritance: Object → MemberInfo

Overview

Members

Syntax

Overview

The MemberInfo class is an abstract base class for all type members in the .NET Framework. It provides a unified way to access common information about members, such as their name, attributes, and declaring type.

You typically do not instantiate MemberInfo directly. Instead, you obtain instances of derived classes such as MethodInfo, PropertyInfo, FieldInfo, and EventInfo through reflection methods on a Type object.

Key properties and methods available through MemberInfo include:

Name: Gets the simple name of the member.
DeclaringType: Gets the type that declares this member.
ReflectedType: Gets the type from which the current MemberInfo object was obtained.
GetCustomAttributes(Type, bool): Returns an enumerated list of custom attributes of the specified type that are directly applied to this member, or a specified number of base class elements.
IsDefined(Type, bool): Indicates whether one or more instances of specified attributes are applied to this member.

MemberInfo is fundamental to dynamic code analysis and manipulation in .NET.

Public Properties

DeclaringType

Type? DeclaringType { get; }

Gets the class that declares the member.

Name

string Name { get; }

Gets the name of the member.

ReflectedType

Type? ReflectedType { get; }

Gets the class that is viewed in this reflection-only view and that contains the member represented by the descriptor.

MemberType

MemberTypes MemberType { get; }

Gets a MemberTypes value that indicates the type of member.

Public Methods

GetCustomAttributes

object[] GetCustomAttributes(bool inherit)

Gets a collection of custom attributes applied to this member, and optionally filters them.

GetCustomAttributes

object[] GetCustomAttributes(Type attributeType, bool inherit)

Gets a collection of custom attributes applied to this member, filtered by type, and optionally filters them.

IsDefined

bool IsDefined(Type attributeType, bool inherit)

Determines whether the specified custom attribute is applied to this member.

Protected Methods

ToString

string ToString()

Overrides the base ToString method to return the qualified name of the member.

Syntax

public abstract class MemberInfo : ICustomAttributeProvider, IEquatable<MemberInfo>
{
    // Properties
    public abstract Type? DeclaringType { get; }
    public abstract string Name { get; }
    public abstract Type? ReflectedType { get; }
    public abstract MemberTypes MemberType { get; }

    // Methods
    public abstract object[] GetCustomAttributes(bool inherit);
    public abstract object[] GetCustomAttributes(Type attributeType, bool inherit);
    public abstract bool IsDefined(Type attributeType, bool inherit);

    // Protected Methods
    protected virtual string ToString();
}