Why do multiline cells in my CSV file appear with a question mark at the end of each line in Excel?

Posted by Chris Lindsay on Stack Overflow See other posts from Stack Overflow or by Chris Lindsay
Published on 2010-03-12T23:38:21Z Indexed on 2010/03/12 23:47 UTC
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I'm currently working on a project where we'd like to allow a user to export their data to CSV. Some of the data we present has multiple values for a single cell, and so we use the standard CSV method of putting each value on its own line:

Column A, Column B, Column C Value A, "Value B1 Value B2", Value C

Most of the time this works fine, but some people are reporting seeing a small question mark in a box character appear at the end of each line when they load the file in Excel. Why is this happening?

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