Empty cell contain into quote marks
===

Im reading data from a speadsheet and moving into a notepad csv file, in c# and then back to a speadsheet. However in the spreadsheet some cell are empty (by empty i mean have a value of = "            ", just spaces and the number of spaces can vary). In the move over to notepad and back to spreadsheet these values can be lost. Is there a way to differentiate these cells so i can put quote marks around then so the cell is still present? 

I have figured out that most of this empty cells have file types data_string or bool, this code works for all data_string

                     `if (fileType == "data_string")

                            {
                                string see = cell.getFormula().ToString();
                              	sw.Write("'" + see + "' ");
                            }
                        else
                        {
                            
                           	 string see = cell.getFormula().ToString();
                           	 sw.Write(see + " ");
                        }`

However i dont want all bool data to be in quote marks just the ones that are empty.so, so far i have 


     `if (fileType == "bool")
                        {

                            if (cell.getFormula().Empty)
                            {
                                sw.Write("'" + cell.getFormula().ToString() + "' ");
                            }
                        }`
However this doesnt work as really the cell is not empty, is there another way round this?
