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Type.GetMembers Method (BindingFlags)

Updated: September 2009

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 abstract MemberInfo[] GetMembers(
	BindingFlags bindingAttr
)

Parameters

bindingAttr
Type: System.Reflection.BindingFlags

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

-or-

Zero, to return null.

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.
-or-
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.

Implements

_Type.GetMembers(BindingFlags)
IReflect.GetMembers(BindingFlags)

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.Static Or BindingFlags.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 int myInt = 0;
   public string myString = null;

   public MyClass()
   {
   }
   public void Myfunction()
   {
   }
}

class Type_GetMembers_BindingFlags
{
   public static void Main()
   {
      try
      {
         MyClass MyObject = new MyClass();
         MemberInfo [] myMemberInfo; 

         // Get the type of the class 'MyClass'.
         Type myType = MyObject.GetType(); 

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

         Console.WriteLine( "\nThe public instance members of class '{0}' are : \n", myType); 
         for (int i =0 ; i < myMemberInfo.Length ; i++)
         {
            // Display name and type of the member of 'MyClass'.
            Console.WriteLine( "'{0}' is a {1}", myMemberInfo[i].Name, myMemberInfo[i].MemberType);
         }

      }
      catch (SecurityException e)
      {
         Console.WriteLine("SecurityException : " + e.Message ); 
      }      
   }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Date

History

Reason

September 2009

Noted that private members of base types are not returned.

Content bug fix.

September 2009

Removed an erroneous statement that null is returned for non-public members outside the assembly, if caller lacks ReflectionPermission.

Content bug fix.

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