filestreamer cannot read the uploaded file in the folder -

Question

protected void btnSave_Click(object sender, EventArgs e) {
  bool locationChecked = false;
  try {
   DDS_Document doc = new DDS_Document();

   #
   region "Upload file to specific location in server"
   if (string.IsNullOrEmpty(fluDocument.FileName)) {
    ScriptManager.RegisterStartupScript(Page, this.GetType(), "alert", string.Format("alert('{0}');", "Please select file to Upload"), true);
    return;
   }
   if (fluDocument.HasFile) {

    string transferfile = "";
    transferfile = fluDocument.FileName;

    fluDocument.PostedFile.SaveAs(filePath + transferfile);

   } else {
    ScriptManager.RegisterStartupScript(Page, this.GetType(), "alert", string.Format("alert('{0}');", "File Could not be Updated"), true);
    return;
   }#
   endregion
   if (!string.IsNullOrEmpty(fluDocument.FileName)) {
    tokens = fluDocument.PostedFile.FileName.Split(new string[] {
     "."
    }, StringSplitOptions.None);
    extention = tokens[1];

    FileStream fs = new FileStream(filePath + fluDocument.PostedFile.FileName, FileMode.Open, FileAccess.Read, FileShare.Write);
    BinaryReader br = new BinaryReader(fs);
    Byte[] bytes = br.ReadBytes((Int32) fs.Length);
    br.Close();
    fs.Close();
    doc.DocumentContent = bytes;

    #
    region "Checking extention"
    if (extention == "pdf") {
     doc.ContentType = "application/" + extention;
    }
    if (extention == "jpg") {
     doc.ContentType = "image/" + extention;
    }
    if (extention == "xls") {
     doc.ContentType = "application/vnd.ms-excel";
    }
    if (extention == "xlsx") {
     doc.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    }
    if (extention == "docx") {
     doc.ContentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
    }
    if (extention == "doc") {
     doc.ContentType = "application/doc";
    }#
    endregion

    if (File.Exists(filePath + fluDocument.PostedFile.FileName)) {
     File.Delete(filePath + fluDocument.PostedFile.FileName);
    }

   }

If the segment in Pink is commented the program will route thru the doc object and saves the captured information in a table except the uploaded file.