how to handle CDATA script in xml

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C#

XML

hey everyone...
I have an xml file containing some functions as CDATA script.
how can I compile such a this files an use the returned values?
is there any c# component or class that I can use ?
in the following u can see an example:

<?xml version="1.0" encoding="utf-8"?>
<XFile xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	       

Public Const Deg2Rad As Double = Math.PI / 180 
Const Rad2Deg as Double = 180 / PI

Public Function GetXValue(ByVal  R as Double, ByVal phi as Double,alpha as Double) As Double
         
         GetXValue=((R*Math.sin(rad(alpha))*Math.sin(rad(phi)))/Math.sin(rad(180-phi-alpha)))  
End Function

...
...
some data in xml format
...
...

</XFile>