How to resolve viewing of PDF issue in ASP.NET with C#?

string path = dict["FileName"].ToString();
                       WebClient client = new WebClient();
                       Byte[] buffer = client.DownloadData(path);

                       if (buffer != null)
                       {
                           Response.ContentType = "application/pdf";
                           Response.AddHeader("content-length", buffer.Length.ToString());
                           Response.BinaryWrite(buffer);
                       }

                       Response.End();