How to use a dynamic forms name in a class

[Mazagangi2011]

Dears,

I had long time developing windows applications using VB.NET and one of thing that I was always use is:

Class (Test) and inside it there are some subs like the following:

VB.NET Code.

Friend Sub FLoadKeyLock(ByVal FRMNAME As Object)
        FRMNAME.Button1.Enabled = True
        FRMNAME.Button2.Enabled = True
        FRMNAME.Button3.Enabled = False
        FRMNAME.Button4.Enabled = False
        FRMNAME.Button5.Enabled = True
        FRMNAME.Button6.Enabled = True
        FRMNAME.Button7.Enabled = True
End Sub
 

Where FRMNAME refers to forms name the I send from different forms and I use (me) keyword to send it.

that was totally works fine in VB.NET but I cannot use it the same way in C#.NET.

C#.NET Code

internal void FLoadKeyLock (Form FRMNAME)
        {
            FRMNAME.Button3.Enabled = true;
            FRMNAME.Button4.Enabled = true;
            FRMNAME.Button1.Enabled = false;
            FRMNAME.Button2.Enabled = false;
            FRMNAME.Button5.Enabled = false;
            FRMNAME.Button6.Enabled = false;
            FRMNAME.Button7.Enabled = false;
            FRMNAME.Button8.Enabled = false;
            FRMNAME.Button9.Enabled = false;
            FRMNAME.Button10.Enabled = false;
        }
 

The Error is: System.Windows.Forms.Form' does not contain a definition for 'Button3' and no extension method 'Button3' accepting a first argument of type

And same error for all used buttons.
So I have two questions:
1 - How to use such a function in C#.NET?
2 - Why it's not working the same way as VB.NET?

Thanks.