Determine all Types that Implement an Interface

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I recently saw an interesting discussion on a forum. The discussion was about finding all the types that implement a particular interface. Here’s a code that lists all the types implementing a particular interface:

C#

using System.Linq;

public static void Main(string[] args)
{
    var t = typeof(IYourInterfaceName);
    var assemblyTypes = AppDomain.CurrentDomain.GetAssemblies()
        .SelectMany(typ => typ.GetTypes())
        .Where(x => t.IsAssignableFrom(x));
    foreach (var v in assemblyTypes)
    {
        Console.WriteLine(v.FullName);
    }          
    Console.ReadLine();
}

VB.NET

Public Shared Sub Main(ByVal args() As String)
    Dim t = GetType(IYourInterfaceName)
    Dim assemblyTypes = AppDomain.CurrentDomain.GetAssemblies() _
    .SelectMany(Function(typ) typ.GetTypes()) _
    .Where(Function(x) t.IsAssignableFrom(x))
    For Each v In assemblyTypes
        Console.WriteLine(v.FullName)
    Next v
    Console.ReadLine()
End Sub

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About The Author

Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

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