I\'m developing a part of an application that\'s responsible for exporting some data into CSV files. The application always uses UTF-8 because of its multilingual nature at
This is not accurately addressing the question but since i stumbled across this and the above solutions didn't work for me or had requirements i couldn't meet, here is another way to add the BOM when you have access to vim:
vim -e -s +"set bomb|set encoding=utf-8|wq" filename.csv
You can convert .csv file to UTF-8 with BOM via Notepad++:
Encoding
→Convert to UTF-8
.File
→Save
.Worked in Microsoft Excel 2013 (15.0.5093.1000) MSO (15.0.5101.1000) 64-bit from Microsoft Office Professional Plus 2013 on Windows 8.1 with locale for non-Unicode programs set to "German (Germany)".
This is an old question but I've just encountered had a similar problem and the solution may help others:
Had the same issue where writing out CSV text data to a file, then opening the resulting .csv in Excel shifts all the text into a single column. After having a read of the above answers I tried the following, which seems to sort the problem out.
Apply an encoding of UTF-8 when you create your StreamWriter. That's it.
Example:
using (StreamWriter output = new StreamWriter(outputFileName, false, Encoding.UTF8, 2 << 22)) {
/* ... do stuff .... */
output.Close();
}
The bug with ignored BOM seems to be fixed for Excel 2013. I had same problem with Cyrillic letters, but adding BOM character \uFEFF
did help.
Working solution for office 365
UTF-16
(no LE, BE)\t
Code in PHP
$header = ['číslo', 'vytvořeno', 'ěščřžýáíé'];
$fileName = 'excel365.csv';
$fp = fopen($fileName, 'w');
fputcsv($fp, $header, "\t");
fclose($fp);
$handle = fopen($fileName, "r");
$contents = fread($handle, filesize($fileName));
$contents = iconv('UTF-8', 'UTF-16', $contents);
fclose($handle);
$handle = fopen($fileName, "w");
fwrite($handle, $contents);
fclose($handle);
Alex is correct, but as you have to export to csv, you can give the users this advice when opening the csv files:
This way the special characters should show correctly.