IIS MVC c# Http header Connection

IIS MVC c# Http header Connection

Is there a way to edit the Http header "connectiom" in MVC. I tried to
"Add" or "AppendHeader" functions. THey all work but you can not edit the
connection header. I know that mvc provides certain standard http headers
to be modified by making some of the header values a public variable of
that request so you can edit such as StatusCode.
But is there a way to edit the Connection.