Dynamically reading Excel column

I want to import data from Excel to object dynamically. How to read the data in Excel based on columns? 

For example, 

 DataRowCollection drc = filteredRows.Rows;
 int totalRows = drc.Count;

 List<DynamicDataControllerModel.PurchaserExcel> target = new List<PurchaserExcel>();

  for (int r = 0; r < totalRows; r++)
  {
           DynamicDataControllerModel.PurchaserExcel pe = new PurchaserExcel();
           pe.PurchaserIC = drc[r].Field<string>("Purchaser IC No"); <-- is there a way to make it more dynamic? like without caption sensitivity
  }

Thank You