Type.GetMembers Method (BindingFlags)


When overridden in a derived class, searches for the members defined for the current Type, using the specified binding constraints.

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

Public MustOverride Function GetMembers (
	bindingAttr As BindingFlags
) As MemberInfo()


Type: System.Reflection.BindingFlags

A bitmask comprised of one or more BindingFlags that specify how the search is conducted.


Zero (BindingFlags.Default), to return an empty array.

Return Value

Type: System.Reflection.MemberInfo()

An array of MemberInfo objects representing all members defined for the current Type that match the specified binding constraints.


An empty array of type MemberInfo, if no members are defined for the current Type, or if none of the defined members match the binding constraints.

Members include properties, methods, fields, events, and so on.

The GetMembers method does not return members in a particular order, such as alphabetical or declaration order. Your code must not depend on the order in which members are returned, because that order varies.

The following BindingFlags filter flags can be used to define which members to include in the search:

  • You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.

  • Specify BindingFlags.Public to include public members in the search.

  • Specify BindingFlags.NonPublic to include non-public members (that is, private, internal, and protected members) in the search. Only protected and internal members on base classes are returned; private members on base classes are not returned.

  • Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.

The following BindingFlags modifier flags can be used to change how the search works:

  • BindingFlags.DeclaredOnly to search only the members declared on the Type, not members that were simply inherited.

Calling this method with only the Public flag or only the NonPublic flag will return the specified members and does not require any other flags.

See System.Reflection.BindingFlags for more information.

To get the class initializer (.cctor) using this method overload, you must specify BindingFlags.Static | BindingFlags.NonPublic (BindingFlags.StaticOrBindingFlags.NonPublic in Visual Basic). You can also get the class initializer using the TypeInitializer property.

If the current T:System.Type represents a constructed generic type, this method returns the MemberInfo objects with the type parameters replaced by the appropriate type arguments.

If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the members of the class constraint, or the members of Object if there is no class constraint.

The following code example demonstrates how to use the GetMembers(BindingFlags) method overload to collect information about all public instance members of a specified class.

Class [MyClass]
   Public myInt As Integer = 0
   Public myString As String = Nothing

   Public Sub New()
   End Sub 'NewNew

   Public Sub Myfunction()
   End Sub 'Myfunction
End Class '[MyClass]

Class Type_GetMembers_BindingFlags

   Public Shared Sub Main()
         Dim MyObject As New [MyClass]()
         Dim myMemberInfo() As MemberInfo

         ' Get the type of the class 'MyClass'.
         Dim myType As Type = MyObject.GetType()

         ' Get the public instance members of the class 'MyClass'. 
         myMemberInfo = myType.GetMembers((BindingFlags.Public Or BindingFlags.Instance))

         Console.WriteLine(ControlChars.Cr + "The public instance members of class '{0}' are : " + ControlChars.Cr, myType)
         Dim i As Integer
         For i = 0 To myMemberInfo.Length - 1
            ' Display name and type of the member of 'MyClass'.
            Console.WriteLine("'{0}' is a {1}", myMemberInfo(i).Name, myMemberInfo(i).MemberType)
         Next i

      Catch e As SecurityException
         Console.WriteLine(("SecurityException : " + e.Message.ToString()))
      End Try

      'The public instance members of class 'MyClass' are :

      ''Myfunction' is a Method
      ''ToString' is a Method
      ''Equals' is a Method
      ''GetHashCode' is a Method
      ''GetType' is a Method
      ''.ctor' is a Constructor
      ''myInt' is a Field
      ''myString' is a Field

   End Sub 'Main 
End Class 'Type_GetMembers_BindingFlags

.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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