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looking up objects inheriting a specified interface in .net

Posted on 2004-08-08
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Last Modified: 2010-04-15
is there a way of looking up all objects inheriting a specified interface in the .net class library?
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Question by:sethUSer420
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gregoryyoung earned 1000 total points
ID: 11748517
sure is !

you would need to run through a set of classes ...

when you get the type for the class on of the methods is GetInterfaces http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemtypeclassgetinterfacestopic.asp

using System;
using System.Web;
using System.Web.UI;

namespace Samples
{
    public class MyTemplate : Control, INamingContainer
    {
        private String _message = null;
        public String Message
        {
            get
            {
                return _message;
            }
            set
            {
                _message = value;
            }
        }    
    }
    public class MyInterfacesSample
    {
        public static void Main()
        {
            try
            {
                Type[] myObjectArray= typeof(MyTemplate).GetInterfaces();
                Console.WriteLine("The interfaces inherited by the MyTemplate class are:\n");
                for (int index = 0; index < myObjectArray.Length; index++)
                {    
                    Console.WriteLine(myObjectArray[index]);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("An exception occurred.");
                Console.WriteLine("Message: " + e.Message);
            }
        }
    }
}

is an example of how to use it, you would simply compare your interface to the interfaces of the class to see if it contains it.

so you would need to run through the assemblies and test each type to see if it contained the interface.
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