[DotNetDevelopment] Doubt in Type Forwarding

[Maddy]

Dear tutor,

Could you please clear my doubt

I have a Class file like this: *SAMPLE1*(compiled as DLL)

   public class Class1
    {
        public string GetMet()
        {
            return (DateTime.Now.ToString("dd/MM/yyyy"));
        }
    }
    public class ClsMain
    {
       public string GetMet()
       {
           return("Maddy Strikes Again");
       }
    }

and i have another dll(*SAMPLE 2*) which has

public class Class1
    {
        public string GetMet(string format)
        {
            return (DateTime.Now.ToString(format));
        }
    }
    public class clsAnother
    {
       public string GetMet()
       {
           return("Here we go");
       }
    }

and now i need to type forward the sample1.dll's Class1 to sample2 dll
as i researched (googled) i found that need to add this Following code in
Sample1. cs file

[assembly:TypeForwardedToAttribute(typeof(MyClass))]


so that i can forward to the that class to new Class in sample2.dll
is that correct what i am doing???
I got an error like

type or namespace name 'TypeForwardedToAttribute' could not be found (are
you missing a using directive or an assembly reference?)

Please help me out in this issue

thanks in advance

regards
sarvesh