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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()
Dim instance As Type
Dim bindingAttr As BindingFlags
Dim returnValue As MemberInfo()

returnValue = instance.GetMembers(bindingAttr)
public abstract MemberInfo[] GetMembers (
	BindingFlags bindingAttr
public abstract function GetMembers (
	bindingAttr : BindingFlags
) : MemberInfo[]
Not applicable.



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


Zero, to return a null reference (Nothing in Visual Basic).

Return Value

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.

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.

If the requested member is non-public and the caller does not have ReflectionPermission to reflect non-public objects outside the current assembly, this method returns a null reference (Nothing in Visual Basic).

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 and protected members) in the search.

  • 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 'New
   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
   End Sub 'Main 
End Class 'Type_GetMembers_BindingFlags

class MyClass
    public int myInt = 0;
    public String myString = null;

    public MyClass()
    } //MyClass

    public void Myfunction()
    } //Myfunction
} //MyClass

class Type_GetMembers_BindingFlags
    public static void main(String[] args)
        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].get_Name(),
        catch (SecurityException e) {
            Console.WriteLine("SecurityException : " + e.get_Message());
    } //main
} //Type_GetMembers_BindingFlags

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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