title: get excel sheet column names using exceldatareader
body: <p>I'm writing the C# library to read the Excel Files without any other dependencies like OLDEB(AccessDatabaseEngine) library. </p>
  
  <p>So I have chosen the ExcelDataReader Library for Reading the .XLS and .XLSX files.</p>
  
  <p>ExcelDataReader is perfectly working with both file formats with my local and deployment server environment. </p>
  
  <p>I'm facing issue, how to get all the columns names from given Excel files?</p>