AssemblyVersionAttribute returns String::Empty

[masterlodi]

Why does the AssemblyTitleAttribute and AssemblyCopyrightAttribute return the correct values but AssemblyVersionAttribute always returns an empty string?

I've specified the version in the assembly!

Assembly^ assy;

try
{
  assy = Assembly::LoadFile(gcnew String(lpFilename)); 
}
catch( Exception ^ e)
{
  MessageBox::Show(e->Message);
}

InitializeComponent();

// Iterate through the attributes for the assembly.

System::Collections::IEnumerator^ myEnum = Attribute::GetCustomAttributes( assy )->GetEnumerator();

while( myEnum->MoveNext())
{
  Attribute^ attr = safe_cast<Attribute^>(myEnum->Current);
  // Check for the AssemblyTitle attribute.
  if(attr->GetType() == AssemblyTitleAttribute::typeid)
  lblAppName->Text = dynamic_cast<AssemblyTitleAttribute^>  (attr)->Title;

// Check for the AssemblyVersionAttribute attribute.

else

// Check for the AssemblyVersionAttribute attribute.

if(attr->GetType() == AssemblyVersionAttribute::typeid)

lblAppVersion->Text = dynamic_cast<AssemblyVersionAttribute^>(attr)->Version;

// Check for the AssemblyCompany attribute.

else

// Check for the AssemblyCopyright attribute.

if(attr->GetType() == AssemblyCopyrightAttribute::typeid)

lblAppCopyright->Text = dynamic_cast<AssemblyCopyrightAttribute^>(attr)->Copyright;

}