DLL in debugging mode question.

I have created a dll and wanted to use for other project. When I call the dll function in debugging mode, it will run the dll code but not directly return a result to me.. Sorry, I m new in VB.net, i thought when call the dll function will direct return result to me, so no one can know the code in dll.

Imports TeleLogin.TeleLoginSystemDLL Public Class Form1 Dim dlllogin As New TeleLogin.TeleLoginSystemDLL Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load dlllogin.mdlRdmSec("OK") End Sub End Class