file content not getting encrypt asp.net

string uploadedFilePath = @"E:\New Folder\";
FileUpload1.SaveAs(uploadedFilePath + Encrypt(FileUpload1.FileName));

public static string Encrypt(string input)
{
  byte[] inputArray = UTF8Encoding.UTF8.GetBytes(input);
  TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
           
  ICryptoTransform cTransform = tripleDES.CreateEncryptor();
  byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
  tripleDES.Clear();
  return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}