Calling Managed code from c# dll. Is it possible ?

Question

 Hi, I’m in process of creating dlls for Web User Controls in ASP.NET v 2.0. Let me explain what exactly my problem is.

UserControl.ascx.cs to be wrapped into dll:
   
public partial class Controls_Search : System.Web.UI.UserControl
{

protected void Page_Load(object sender, EventArgs e)
{
            Label1.Text = testMethod();
}      
   
public string testMethod()
      {
            return "Yes Iam here " + Sample.testMethod1();
      }
}

public class Sample
{
        public static string testMethod1()
        {
            return "Only";
        }
}
           
    I’ve created the dll successfully with the name Search.dll. Also i referenced this dll inside my new project. Now, whenever I load this in my page, testMethod() is being called, consequently the output is "Yes Iam here Only". That’s cool. But I should be in a position to override Sample.testMethod1()Wrapped inside the dll with my project’s App_Code class say class1.cs.

    This is my new class within the project in App_Code/Class1.cs.

public class Sample
{
        public static string testMethod1()
        {
            return "Only1";
           
        }
}   

    I also tried virtual & override with testMethod1() being defined as non-static member of that class. Nothing works.

    My output should be: "Yes Iam here Only1"

Thanks in advance,
chandrasekar