Publish/Upload the documents to document library from local hard drive

I am sharing function to upload your files on local hard drive to SharePoint document library. In my scenario I have a file on local hard drive and upload this to a SharePoint document library and delete the file presented on local drive. The source code is

// For Publish file to library

private void PublishWorkbook(string strTempLocalPath, string strLibraryURL, string strFileName)
        {
            SPSecurity.RunWithElevatedPrivileges(delegate()
                   {
                       using (SPSite siteCollection = new SPSite(SiteURL))
                       {
                           using (SPWeb spWeb = siteCollection.OpenWeb())
                           {
                               SPList spList = spWeb.Lists[strLibraryURL];///Lists/Announcements
                               string fileName = strFileName;
                               FileStream fileStream = null;
                               Byte[] fileContent = null;
                               try
                               {
                                   string docPath = strTempLocalPath; //physical location of the file
                                   fileStream = File.OpenRead(docPath);
                                   fileContent = new byte[Convert.ToInt32(fileStream.Length)];
                                   fileStream.Read(fileContent, 0, Convert.ToInt32(fileStream.Length));
                                   spWeb.AllowUnsafeUpdates = true;
                                   spList.RootFolder.Files.Add(spList.RootFolder.Url + "/" + fileName, fileContent, true);
                                   spList.Update();
                                   spWeb.AllowUnsafeUpdates = false;
                               }
                               catch (Exception ex)
                               {
                                   throw ex;
                               }
                               finally
                               {
                                   if (fileStream != null)
                                   {
                                       fileStream.Close();
                                   }
                               }
                               DeleteTempFile(strTempLocalPath);
                           }
                       }
                   });
        }

// For delete file from local hard drive
        static void DeleteTempFile(string strFilePath)
        {
            try
            {
                FileInfo TheFile = new FileInfo(strFilePath);
                if (TheFile.Exists)
                {
                    File.Delete(strFilePath);
                }
                else
                {
                    throw new FileNotFoundException();
                }
            }
            catch (FileNotFoundException ex)
            {
                //lblStatus.Text += ex.Message;
            }
            catch (Exception ex)
            {
                //lblStatus.Text += ex.Message;
            }
        }