title: how Read and write binary excel file without com library
body: <p>I want to read and write excel file . it can do with oledb , there is a limitation </p>
  
  <ol>
  <li>maximunm characters &lt; 255</li>
  <li>solution is mono data type , now create table become second sheet (when open excel it is shown as hidden.)</li>
  </ol>
  
  <p>please give proper answer</p>