MemberInfo Class
Obtains information about the attributes of a member and provides access to member metadata.
Assembly: mscorlib (in mscorlib.dll)
The MemberInfo type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | DeclaringType | Gets the class that declares this member. |
![]() ![]() ![]() | MemberType | When overridden in a derived class, gets a MemberTypes value indicating the type of the member — method, constructor, event, and so on. |
![]() | MetadataToken | Gets a value that identifies a metadata element. |
![]() ![]() | Module | Gets the module in which the type that declares the member represented by the current MemberInfo is defined. |
![]() ![]() ![]() | Name | Gets the name of the current member. |
![]() ![]() ![]() | ReflectedType | Gets the class object that was used to obtain this instance of MemberInfo. |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Equals | Returns a value that indicates whether this instance is equal to a specified object. (Overrides Object::Equals(Object).) In XNA Framework 3.0, this member is inherited from Object::Equals(Object). In Portable Class Library Portable Class Library, this member is inherited from Object::Equals(Object). |
![]() ![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() ![]() | GetCustomAttributes(Boolean) | When overridden in a derived class, returns an array of all custom attributes applied to this member. |
![]() ![]() ![]() | GetCustomAttributes(Type, Boolean) | When overridden in a derived class, returns an array of custom attributes applied to this member and identified by Type. |
![]() | GetCustomAttributesData | Returns a list of CustomAttributeData objects representing data about the attributes that have been applied to the target member. |
![]() ![]() ![]() | GetHashCode | Returns the hash code for this instance. (Overrides Object::GetHashCode().) In XNA Framework 3.0, this member is inherited from Object::GetHashCode(). In Portable Class Library Portable Class Library, this member is inherited from Object::GetHashCode(). |
![]() ![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() ![]() | IsDefined | 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. |
![]() ![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | Equality | Indicates whether two MemberInfo objects are equal. |
![]() ![]() | Inequality | Indicates whether two MemberInfo objects are not equal. |
| Name | Description | |
|---|---|---|
![]() ![]() | _MemberInfo::GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. |
![]() ![]() | _MemberInfo::GetType | Gets a Type object representing the MemberInfo class. |
![]() ![]() | _MemberInfo::GetTypeInfo | Retrieves the type information for an object, which can then be used to get the type information for an interface. |
![]() ![]() | _MemberInfo::GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). |
![]() ![]() | _MemberInfo::Invoke | Provides access to properties and methods exposed by an object. |
The MemberInfo class is the abstract base class for classes used to obtain information about all members of a class (constructors, events, fields, methods, and properties).
This class introduces the basic functionality that all members provide.
Notes to InheritorsWhen you inherit from MemberInfo you must override the following members: GetCustomAttributes and IsDefined.
This example shows how to use various reflection classes to analyze the metadata contained in an assembly.
using namespace System; using namespace System::Reflection; static void Display(Int32 indent, String^ format, ... array<Object^>^param) { Console::Write("{0}", gcnew String (' ', indent)); Console::WriteLine(format, param); } // Displays the custom attributes applied to the specified member. static void DisplayAttributes(Int32 indent, MemberInfo^ mi) { // Get the set of custom attributes; if none exist, just return. array<Object^>^attrs = mi->GetCustomAttributes(false); if (attrs->Length==0) { return; } // Display the custom attributes applied to this member. Display(indent+1, "Attributes:"); for each ( Object^ o in attrs ) { Display(indent*2, "{0}", o); } } void main() { try { // This variable holds the amount of indenting that // should be used when displaying each line of information. Int32 indent = 0; // Display information about the EXE assembly. Assembly^ a = System::Reflection::Assembly::GetExecutingAssembly(); Display(indent, "Assembly identity={0}", gcnew array<Object^> {a->FullName}); Display(indent+1, "Codebase={0}", gcnew array<Object^> {a->CodeBase}); // Display the set of assemblies our assemblies reference. Display(indent, "Referenced assemblies:"); for each ( AssemblyName^ an in a->GetReferencedAssemblies() ) { Display(indent + 1, "Name={0}, Version={1}, Culture={2}, PublicKey token={3}", gcnew array<Object^> {an->Name, an->Version, an->CultureInfo, (BitConverter::ToString(an->GetPublicKeyToken()))}); } Display(indent, ""); // Display information about each assembly loading into this AppDomain. for each ( Assembly^ b in AppDomain::CurrentDomain->GetAssemblies()) { Display(indent, "Assembly: {0}", gcnew array<Object^> {b}); // Display information about each module of this assembly. for each ( Module^ m in b->GetModules(true) ) { Display(indent+1, "Module: {0}", gcnew array<Object^> {m->Name}); } // Display information about each type exported from this assembly. indent += 1; for each ( Type^ t in b->GetExportedTypes() ) { Display(0, ""); Display(indent, "Type: {0}", gcnew array<Object^> {t}); // For each type, show its members & their custom attributes. indent += 1; for each (MemberInfo^ mi in t->GetMembers() ) { Display(indent, "Member: {0}", gcnew array<Object^> {mi->Name}); DisplayAttributes(indent, mi); // If the member is a method, display information about its parameters. if (mi->MemberType==MemberTypes::Method) { for each ( ParameterInfo^ pi in (((MethodInfo^) mi)->GetParameters())) { Display(indent+1, "Parameter: Type={0}, Name={1}", gcnew array<Object^> {pi->ParameterType, pi->Name}); } } // If the member is a property, display information about the property's accessor methods. if (mi->MemberType==MemberTypes::Property) { for each ( MethodInfo^ am in (((PropertyInfo^) mi)->GetAccessors()) ) { Display(indent+1, "Accessor method: {0}", gcnew array<Object^> {am}); } } } // Display a formatted string indented by the specified amount. indent -= 1; } indent -= 1; } } catch (Exception^ e) { Console::WriteLine(e->Message); } } // The output shown below is abbreviated. // //Assembly identity=Reflection, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null // Codebase=file:///C:/Reflection.exe //Referenced assemblies: // Name=mscorlib, Version=1.0.5000.0, Culture=, PublicKey token=B7-7A-5C-56-19-34-E0-89 // Name=Microsoft.VisualBasic, Version=7.0.5000.0, Culture=, PublicKey token=B0-3F-5F-7F-11-D5-0A-3A // //Assembly: mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 // Module: mscorlib.dll // Module: prc.nlp // Module: prcp.nlp // Module: ksc.nlp // Module: ctype.nlp // Module: xjis.nlp // Module: bopomofo.nlp // Module: culture.nlp // Module: region.nlp // Module: sortkey.nlp // Module: charinfo.nlp // Module: big5.nlp // Module: sorttbls.nlp // Module: l_intl.nlp // Module: l_except.nlp // // Type: System.Object // Member: GetHashCode // Member: Equals // Parameter: Type=System.Object, Name=obj // Member: ToString // Member: Equals // Parameter: Type=System.Object, Name=objA // Parameter: Type=System.Object, Name=objB // Member: ReferenceEquals // Parameter: Type=System.Object, Name=objA // Parameter: Type=System.Object, Name=objB // Member: GetType // Member: .ctor // // Type: System.ICloneable // Member: Clone // // Type: System.Collections.IEnumerable // Member: GetEnumerator // Attributes: // System.Runtime.InteropServices.DispIdAttribute // // Type: System.Collections.ICollection // Member: get_IsSynchronized // Member: get_SyncRoot // Member: get_Count // Member: CopyTo // Parameter: Type=System.Array, Name=array // Parameter: Type=System.Int32, Name=index // Member: Count // Accessor method: Int32 get_Count() // Member: SyncRoot // Accessor method: System.Object get_SyncRoot() // Member: IsSynchronized // Accessor method: Boolean get_IsSynchronized() //
- SecurityAction::InheritanceDemand
for full trust for inheritors. This class cannot be inherited by partially trusted code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

