How to use the “is” operator in System.Type variables?

object ReturnMatch(System.Type type)
{
    foreach(object obj in myObjects)
    {
        if (obj == type)
        {
            return obj;
        }
    }
}

if (obj is type) // won't compile in C# 2.0

if (obj.GetType().Equals(type) || obj.GetType().IsSubclassOf(type))

Type theTypeWeWant; // From argument or whatever
foreach (object o in myCollection)
{
    if (theTypeWeWant.IsAssignableFrom(o.GetType))
         return o;
}

private T FindObjectOfType<T>() where T: class
{
    foreach(object o in myCollection)
    {
        if (o is T)
             return (T) o;
    }
    return null;
}

if(obj is type)

foreach(object obj in myObjects)
{
  if (obj is type)
  {
    return obj;
  }
}

class Level1
  {
  }

  class Level2A : Level1
  {
  }

  class Level2B : Level1
  {
  }

  class Level3A2A : Level2A
  {
  }


  class Program
  {
    static void Main(string[] args)
    {
      object[] objects = new object[] {"testing", new Level1(), new Level2A(), new Level2B(), new Level3A2A(), new object() };


      ReturnMatch(typeof(Level1), objects);
      Console.ReadLine();
    }


    static void ReturnMatch(Type arbitraryType, object[] objects)
    {
      foreach (object obj in objects)
      {
        Type objType = obj.GetType();

        Console.Write(arbitraryType.ToString() + " is ");

        if (!arbitraryType.IsAssignableFrom(objType))
          Console.Write("not ");

        Console.WriteLine("assignable from " + objType.ToString());

      }
    }
  }