title: how to make performance faster while reading excel cell values
body: <p>i am trying to read excel cell values from excel sheets and i am doing this by opening the excel files and reading values using by two loops by rows and columns.</p>
  
  <p>but i am facing problem is that it's taking long time to process all the excel files.
  is there any best way to read excel files and bind to dataset.</p>
  
  <p>i have different kinds of files in different folders(each folder contains 100 excel files) and for each sheet i have defined sheetname,rowstart ,rowend, headerstart, headerend to use in loop for rows and columns  and i have loaded this into datatable.
  while processing the excel files , i have filtered the above datatable based sheetname and then start looping based on row start, row end and columnstart  and columnend.</p>
  
  <p>is there any tool where i can pass rowstart , rowend, columnstart,columnend to read excel cell values.</p>
  
  <p>Please help me on this.</p>
  
  <p>Thanks
  Santosh</p>