MemberInfo.GetCustomAttributes Method (Boolean)

Parameters

• inherit
  Type: System.Boolean
  true to search this member's inheritance chain to find the attributes; otherwise, false. This parameter is ignored for properties and events; see Remarks

Return Value

Type: array<System.Object[]
An array that contains all the custom attributes applied to this member, or an array with zero elements if no attributes are defined.

Imports System.Reflection

' Define a custom attribute with one named parameter.
<AttributeUsage(AttributeTargets.All)> Public Class MyAttribute
   Inherits Attribute
   Private myName As String

   Public Sub New(ByVal name As String)
      myName = name
   End Sub 'New

   Public ReadOnly Property Name() As String
      Get
         Return myName
      End Get
   End Property
End Class 'MyAttribute

' Define a class that has the custom attribute associated with one of its members.
Public Class MyClass1

   <MyAttribute("This is an example attribute.")> Public Sub MyMethod(ByVal i As Integer)
      Return
   End Sub 'MyMethod
End Class 'MyClass1


Public Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Try
         ' Get the type of MyClass1.
         Dim myType As Type = GetType(MyClass1)
         ' Get the members associated with MyClass1.
         Dim myMembers As MemberInfo() = myType.GetMembers()

         ' Display the attributes for each of the members of MyClass1.
         Dim i As Integer
         For i = 0 To myMembers.Length - 1
            Dim myAttributes As [Object]() = myMembers(i).GetCustomAttributes(False)
            If myAttributes.Length > 0 Then
               outputBlock.Text += String.Format("The attributes for the member {0} are: ", myMembers(i)) & vbCrLf
               Dim j As Integer
               For j = 0 To myAttributes.Length - 1
                  outputBlock.Text += String.Format("The type of the attribute is: {0}", myAttributes(j)) & vbCrLf
               Next j
            End If
         Next i
      Catch e As Exception
         outputBlock.Text += String.Format("An exception occurred: {0}.", e.Message) & vbCrLf
      End Try
   End Sub 'Main
End Class 'MemberInfo_GetCustomAttributes

using System;
using System.Reflection;

// Define a custom attribute with one named parameter.
[AttributeUsage(AttributeTargets.All)]
public class MyAttribute : Attribute
{
   private string myName;
   public MyAttribute(string name)
   {
      myName = name;
   }
   public string Name
   {
      get
      {
         return myName;
      }
   }
}

// Define a class that has the custom attribute associated with one of its members.
public class MyClass1
{
   [MyAttribute("This is an example attribute.")]
   public void MyMethod(int i)
   {
      return;
   }
}

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      try
      {
         // Get the type of MyClass1.
         Type myType = typeof(MyClass1);
         // Get the members associated with MyClass1.
         MemberInfo[] myMembers = myType.GetMembers();

         // Display the attributes for each of the members of MyClass1.
         for (int i = 0; i < myMembers.Length; i++)
         {
            Object[] myAttributes = myMembers[i].GetCustomAttributes(true);
            if (myAttributes.Length > 0)
            {
               outputBlock.Text += String.Format("\nThe attributes for the member {0} are: \n", myMembers[i]) + "\n";
               for (int j = 0; j < myAttributes.Length; j++)
                  outputBlock.Text += String.Format("The type of the attribute is {0}.", myAttributes[j]) + "\n";
            }
         }
      }
      catch (Exception e)
      {
         outputBlock.Text += String.Format("An exception occurred: {0}", e.Message) + "\n";
      }
   }
}