I've been trying this for quite a while now, but can't figure it out. I'm trying to export data to Excel via a *.csv file. It works great so far, but I have some encoding problems when opening the files in Excel.
(original string on the left, EXCEL result on the right):
Messwert(µm / m) ==> Messwert(µm / m)
Dümme Mässöng ==> Dümme Mässöng
Notepad++ tells me that the file is encoded "ANSI as UTF8"(WTF?)
So here are different ways I tried to get a valid result: obvious implementation:
tWriter.Write(";Messwert(µm /m)");
more sophisticated one (tried probably a dozen or more encoding combinations:)
tWriter.Write(Encoding.Default.GetString(Encoding.Unicode.GetBytes(";Messwert(µm /m)")));
tWriter.Write(Encoding.ASCII.GetString(Encoding.Unicode.GetBytes(";Messwert(µm /m)")));
and so on
Whole source code for the method creating the data:
MemoryStream tStream = new MemoryStream();
StreamWriter tWriter = new StreamWriter(tStream);
tWriter.Write("\uFEFF");
tWriter.WriteLine(string.Format("{0}", aMeasurement.Name));
tWriter.WriteLine(aMeasurement.Comment);
tWriter.WriteLine();
tWriter.WriteLine("Zeit in Minuten;Messwert(µm / m)");
TimeSpan tSpan;
foreach (IMeasuringPoint tPoint in aMeasurement)
{
tSpan = new TimeSpan(tPoint.Time - aMeasurement[0].Time);
tWriter.WriteLine(string.Format("{0};{1};", (int)tSpan.TotalMinutes, getMPString(tPoint)));
}
tWriter.Flush();
return tStream;
Generated CSV file:
Dümme Mössäng
Testmessung die erste
Zeit in Minuten;Messwert(µm / m)
0;-703;
0;-381;
1;1039;
1;1045;
2;1457;
2;1045;
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This worked perfect for me:
private const int WIN_1252_CP = 1252; // Windows ANSI codepage 1252
this._writer = new StreamWriter(fileName, false, Encoding.GetEncoding(WIN_1252_CP));
CSV encoding issues (Microsoft Excel)
try the following:
using (var sw = File.Create(Path.Combine(txtPath.Text, "UTF8.csv")))
{
var preamble = Encoding.UTF8.GetPreamble();
sw.Write(preamble, 0, preamble.Length);
var data = Encoding.UTF8.GetBytes("懘荧,\"Hello\",text");
sw.Write(data, 0, data.Length);
}
It writes the proper UTF8 preamble to the file before writing the UTF8 encoded CSV.
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