How should I parse Infinity with Double?

c#, double, infinity, parsing

Solution

I just found this out:

Decimal.Parse("Infinity", System.Globalization.CultureInfo.InvariantCulture);

will work and return a double with the value +Infinity.

The reason it did not work is that I am not, I think, automatically in the InvariantCulture but perhaps in the de-DE culture which does not handle the exact string "Infinity". (Perhaps it would handle some other string.)

Problem

If I try ``` Double.Parse("Infinity") ``` I get ``` Double.Parse("Infinity") threw an exception of type 'System.FormatException' ``` Why? And what should I do if I want to parse it anyway and get a Double with the value Infinity?

Original source