Floating point numbers in XML

what is the best way to handle floating point numbers in XML? If I have, for instance:

double a = 123.456;

and I would like to keep it as

<A> 123.456 </A>
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simply using ...

myDoc.createTextNode(a.ToString());

is fine? Or should it be done with some Globalization stuff to make it region-independent?

Have a look at the XmlConvert class, specifically the XmlConvert.ToString Method (Double).

[The XmlConvert Class] provides methods for converting between common language runtime types and XML Schema definition language (XSD) types. When converting data types the values returned are locale independent.