Return statement not getting executed

Hello All,
I have select case statement where last case is directly breaking and not executing the return statement
public Byte[] BuildPDF { Case A: /// Some code... Case B: /// Some code... Case C: pdfBytes = pdfConverter.GetPdfBytesFromHtmlString(sbFinalFormattedData.ToString()); // send the generated PDF document to client browser // get the object representing the HTTP response to browser HttpResponse httpResponse = HttpContext.Current.Response; // add the Content-Type and Content-Disposition HTTP headers httpResponse.AddHeader("Content-Type", "application/pdf"); httpResponse.AddHeader("Content-Disposition", String.Format("inline; filename=GettingStarted.pdf; size={0}", pdfBytes.Length.ToString())); // write the PDF document bytes as attachment to HTTP response httpResponse.BinaryWrite(pdfBytes); // Note: it is important to end the response, otherwise the ASP.NET / ...