LNK2005 Error - Using more than one form

[Mike Cheel]

I keep getting that infernal LNK2005 error when I try to build my program. I
am using VS.NET 2003. Here is the error:

pm error LNK2005: "public: void __clrcall
pm::frmAddOrder Items::SayHello (class System::String __gc *)__gc "
(?SayHello@frmA ddOrderItems@pm @@$$FQ$AAMXP$AA VString@System@ @@Z) already
defined in frmMain.obj

frmMain is my app's main form and frmAddOrderItem s is a form I am displaying
via frmMain using frmAOI->ShowDialog(thi s)

frmAddOrderItem has a sample function prototyped as void SayHello(String *
strMSG);

and I have defined it later in the namespace.

The error arises when I go I call it in the constructor. this->SayHello("He y
there!");

Any idea why this raises the LNK2005 error?