c# - How do I format to only include decimal if there are any -

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what best way format decimal if want decimal displayed if not integer.

eg:

decimal amount = 1000m decimal vat = 12.50m

when formatted want:

amount: 1000 (not 1000.0000) vat: 12.5 (not 12.50) 

    decimal 1 = 1000m;     decimal 2 = 12.5m;      console.writeline(one.tostring("0.##"));     console.writeline(two.tostring("0.##"));

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