Professional IronPython

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CHAPTER 17
ExtEnding ironPython Using VisUal Basic.nEt
else:
print Row.Address
print ‘City: ‘, 
if Row.IsCityNull():
print ‘Nothing’
else:
print Row.City
print ‘Region: ‘, 
if Row.Is_RegionNull():
print ‘Nothing’
else:
print Row._Region
print ‘Postal Code: ‘, 
if Row.IsPostalCodeNull():
print ‘Nothing’
else:
print Row.PostalCode
print ‘Country: ‘, 
if Row.IsCountryNull():
print ‘Nothing’
else:
print Row.Country
print ‘Phone: ‘, 
if Row.IsPhoneNull():
print ‘Nothing’
else:
print Row.Phone
print ‘Fax: ‘, 
if Row.IsFaxNull():
print ‘Nothing’
else:
print Row.Fax
# Pause after the debug session.
raw_input(‘\nPress any key to continue...’)
This listing looks like a lot of code, but the process is relatively simple. The example begins as usual 
by gaining access to CLR, using the 
AddReferenceToFile()
method to create a reference to the 
extension, and creating an instance of the extension class.
At this point, the code calls 
MyData.GetData()
with a 
CustomerID
of 
‘ALFKI‘
. The output is 
placed in 
Row
. If you use the 
dir()
function on 
Row
, you see it provides a lot more than a listing of 
fields that appear as part of the output. Figure 17-23 shows the attributes 
Row
provides.
The output fields come in two types. The first are fields that the row must contain. These fields 
always contain data. The second are optional fields that might not contain data. If you try to 
print
LISTINg 17-6 
(continued)
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