Článek
11/18/2011

Type.GetMembers Method (BindingFlags)

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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)

Syntax

'Declaration
Public MustOverride Function GetMembers ( _
    bindingAttr As BindingFlags _
) As MemberInfo()

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 nulla null reference (Nothing in Visual Basic).

Return Value

Type: array<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

IReflect.GetMembers(BindingFlags)

Remarks

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).

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.

Examples

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.

Note:
To run this example, see Building Examples That Use a Demo Method and a TextBlock Control.

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 Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Try
         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))

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

      Catch e As SecurityException
         outputBlock.Text &= ("SecurityException : " + e.Message.ToString()) & vbCrLf
      End Try
   End Sub 'Main 
End Class 'Type_GetMembers_BindingFlags


class MyClass
{
   public int myInt = 0;
   public string myString = null;

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

class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      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);

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

      }
      catch (SecurityException e)
      {
         outputBlock.Text += "SecurityException : " + e.Message + "\n";
      }
   }
}

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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