C#

private void button2_Click(object sender, EventArgs e)
     {
     PC pc = new PC();
     int i = 4;
     pc.ValidateDynData(null, ref i);
     }

 public partial class PC : GenericPC
     {
     public override void ValidateDynData(TextBox[] tb_dynData_Array, ref int result)
         {
         Console.WriteLine("Ko PC::ValidateDynData");
         }
     }


 public class GenericPC
     {
     TextBox[] itsEnteredDynData;
     int returnCode;
     private int processDynData()
         {
         ValidateDynData(itsEnteredDynData, ref returnCode); //start here
         return returnCode;
         }

     public virtual void ValidateDynData(TextBox[] tb_dynData_Array, ref int result)
         {
         Console.WriteLine("Generic::ValidateDynData passing off to child to validate special data");
         }
     }

Ko PC::ValidateDynData

GenericPC gpc = new GenericPC();
gpc.ValidateDynData(null, ref i);

Generic::ValidateDynData passing off to child to validate special data

_assembly = Assembly.LoadFrom(programDll);
_type = _assembly.GetType("CrWriter.PC");
_objectInstance = Activator.CreateInstance(_type);
_parameters = new Object[] { cb1, programDll, templateArr, itsDll, cert, i, cb1.cbInfos[i].boxID };
controls[i] = new Control();
//The following lands in my child's GetPC method
//My parent also has a method called GetPC
controls[i] = (Control)_type.InvokeMember("GetPC", BindingFlags.Default | BindingFlags.InvokeMethod, null, _objectInstance, _parameters);

controls[i].Dock = DockStyle.None;
this.Controls.Add(controls[i]);

MichCl wrote:

Since my Invocation of GetPC lands in the child class and not the parent, it must be created correctly. So I'm not sure why it's not landing in the correct ValidateDynData method.

public virtual void ValidateDynData(TextBox[] tb_dynData_Array, ref int result)
{
   Console.WriteLine("Generic::ValidateDynData passing off to child to validate special dynamic data");
}

public override void ValidateDynData(TextBox[] tb_dynData_Array, ref int result)
{
    Console.WriteLine("Ko PC::ValidateDynData");

ValidateDynData(itsEnteredDynamicData, ref returnCode);

GenericPC baseInst = new GenericPC(); 
return baseInst.GetPC(cbInst, dllSel, templ, dll, cert0, slaveIndex, BoxID);