title: Best free Excel writer for C# to output datatable to excel
body: <p>I've got a console app that loads up a datatable; I'd like to export that to an Excel format and attach it to an email that's sent out on a regular basis.</p>
  
  <p>What is the best library to do so that I can pull down for free? I'm working for an academic institution and we don't have a budget for third-party controls.</p>
  
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  <p>possible related question: <a href="https://stackoverflow.com/questions/918102/how-to-store-data-to-excel-from-dataset-without-going-cell-by-cell">How to store data to Excel from DataSet without going cell-by-cell?</a></p>