Regex nested groups
I am attempting to extract all data from a file with one regex expression. Since there are optional(?,`*) and repitious(`*,+) expressions, it would be difficult to enumerate through the captures, at least in a readable and understandable fashion. Therefore, I am using named groups. However the data is in an XML like structure; neseted elements can have complex elements. So I am using nested name groups. However, one I have captured a group, how do I retrieve the nested groups by name?  

    Dim mtch = System.Text.RegularExpressions.Regex.Match(fullText, _
                                           "\s+(?<PolyID>\d+)" & _
										   "\s+(?<Center>" & _
												"(?<LAT>\-?\d\.\d+E\+\d{2})" & _
												"\s+(?<LON>\-?\d\.\d+E\+\d{2})" & _
											")\n(?<Point>\s+" & _
												"(?<LAT>\-?\d\.\d+E\+\d{2})" & _
												"\s+(?<LON>\-?\d\.\d+E\+\d{2})" & _
											"\n)+END\n", _
											System.Text.RegularExpressions.RegexOptions.Singleline)
I am trying to get the 
    
    mtch.Groupd("Center").Group("LAT").Value

How can I retrieve named subgroups of the current group?
Regex nested groups
===

I am attempting to extract all data from a file with one regex expression. Since there are optional(?,`*) and repitious(`*,+) expressions, it would be difficult to enumerate through the captures, at least in a readable and understandable fashion. Therefore, I am using named groups. However the data is in an XML like structure; neseted elements can have complex elements. So I am using nested name groups. However, one I have captured a group, how do I retrieve the nested groups by name?  

    Dim mtch = System.Text.RegularExpressions.Regex.Match(fullText, _
                                           "\s+(?<PolyID>\d+)" & _
										   "\s+(?<Center>" & _
												"(?<LAT>\-?\d\.\d+E\+\d{2})" & _
												"\s+(?<LON>\-?\d\.\d+E\+\d{2})" & _
											")\n(?<Point>\s+" & _
												"(?<LAT>\-?\d\.\d+E\+\d{2})" & _
												"\s+(?<LON>\-?\d\.\d+E\+\d{2})" & _
											"\n)+END\n", _
											System.Text.RegularExpressions.RegexOptions.Singleline)
I am trying to get the 
    
    mtch.Groupd("Center").Group("LAT").Value

How can I retrieve named subgroups of the current group?