Why are the changes that I made in a CSV file not saved? For example, I change the style of a cell to "Numbers". I save the file, but when I open the file again, the changes aren't saved.
4 Answers
CSV files contain only data, as comma-separated values. If you want to keep your formatting changes, save the file as an Excel file (i.e. myfile.xls), using the 'save as' file menu option.
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Because csv only contains data, not style. If you want to save style save as .xls
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CSV files can't contain styling. Any styling you apply will only exist for that editing session.
If you want to preserve styling, save in a different format, such as XLS.
CSV files contain only data.
You can ensure Excel helps prevent formatting loss with its automatic Save As dialogue box. You can disable/re-enable the Save As box by going to File-->Options-->Save-->'Show data loss warning when editing comma delimited files'.