Forcing positive sign on double in .Net String.Format

Posted by Max Yaffe on Stack Overflow See other posts from Stack Overflow or by Max Yaffe
Published on 2010-04-06T21:47:35Z Indexed on 2010/04/06 22:43 UTC
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Filed under:

c#

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formatting

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sign

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double

Context: .Net, C#

I want to print a complex number made from two doubles. The sign needs to show on the imaginary part. I'd like to use the default double formatting for each part to minimize the number of characters.

I tried using String.Format("{0:+G;-G}{1:+G;-G}j", real, imaginary) but this ended up printing: "+G-Gj". Not quite what I wanted.

Is there any way to do this using the G specifier or do I need to do a custom format which would sacrifice auto-switching the exponent, e.g. {1:+#.######e###;-#.######e###}j"

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