Get current system setting's fraction separator

In my app I parse a value from xml (string) to a double. The value in the xml happens to have the dot as a fraction seperator whereas the system takes the current system settings and can have a different separator (dev system takes the comma for example).

Is there a way to tell double.TryParse() the dot is the fraction separator?
Should I manually replace the dot with the system's fraction separator? If so, how do I get this?

From stackoverflow

• Pass CultureInfo.InvariantCulture into double.TryParse:

  double value;
  bool success = double.TryParse(text, NumberStyles.Float,
                                 CultureInfo.InvariantCulture,
                                 out value);
  

  (For genuinely standard XML formatting, Frederik's suggestion of using XmlConvert is the best idea though.)

• What you should do, in this situation, is use the XmlConvert class and its members to convert the value like it exists in the XML file to a regular variable. :)

  borisCallens : I didn't know such a thing existed. And why exactly is this class better then double.trypars()? I understand it can come in handy when there are special characters involved. But there is no tryparse as far as I can see.