encrypt all types of files using asp.net c#

protected void UploadFileToSharePoint(string UploadedFilePath, string SharePointPath)

        {
            WebResponse response = null;
           
            try
            {
                // Create a PUT Web request to upload the file.
                WebRequest request = WebRequest.Create(SharePointPath);
                File.Encrypt(SharePointPath);
                request.Credentials = CredentialCache.DefaultCredentials;

                request.Method = "PUT";

                // Allocate a 1 KB buffer to transfer the file contents.
                // You can adjust the buffer size as needed, depending on
                // the number and size of files being uploaded.
                byte[] buffer = new byte[1024];

                // Write the contents of the local file to the
                // request stream.
                using (Stream stream = request.GetRequestStream())
                using (FileStream fsWorkbook = File.Open(UploadedFilePath,
                    FileMode.Open, FileAccess.Read))
                {
                    int i = fsWorkbook.Read(buffer, 0, buffer.Length);

                    while (i > 0)
                    {
                        
                        stream.Write(buffer, 0, i);
                        i = fsWorkbook.Read(buffer, 0, buffer.Length);
                    }
                }

                // Make the PUT request.
                response = request.GetResponse();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                response.Close();
            }
        }