[Gambas-user] XML - Property ReadFlags

[Adrien Prokopowicz]

Le Fri, 11 Aug 2017 00:37:02 +0200, Karl Reinl <karl.reinl at ...9...> a  
écrit:

> Am Donnerstag, den 10.08.2017, 23:11 +0200 schrieb Adrien Prokopowicz:
>> Le Thu, 10 Aug 2017 18:42:37 +0200, Hans Lehmann <hans at ...3219...> a
>> écrit:
>> > Hello Adrian,
>> >Thank you for this example in the playground. Now I can successfully
>> > work with the component gb.xml.
>> >To the red marked lines in the source text section, I find no
>> > description in the documentation.
>> >Questions: What is the meaning of the Boolean property ReadFlags with
>> > regard to the use of the class XmlReader?What is the effect of setting
>> > the value to False?
>> >Public Sub btnParseXMLNodes_Click()
>> >  txaNodes.Clear   xmlReader.Open(sXMLPath)
>> >   xmlReader.ReadFlags[XmlReaderNodeType.Element] = True
>> >    xmlReader.ReadFlags[XmlReaderNodeType.Attribute] = True
>> >   xmlReader.Read()
>> >   While Not xmlReader.Eof
>> >    ...
>> >   Wend
>> >  End
>> > Regards Hans
>>
>> When a ReadFlag is set to False, the Read() method will skip the
>> corresponding
>> XML node type if it encounters it.
>> By default they are all set to True, setting them to true manually won't
>> do anything.
>>
>> Here is an example, you can toggle the ReadFlags and see the result :
>>
>> https://gambas-playground.proko.eu/?gist=b90eeff3dacbec0548d01701f3c05133
>>
>
> Salut Adrian,
>
> is it the lib, the example or the playground. Have a look to the
> attached screen. All ReadFlags are set to False, but I get a '6
> endelement'

It is a mistake in my example code.
Because all flags are set to false, the XmlReader will skip through the  
entire
document until it hits the end (Eof).

However, becaused I used a Repeat-Until loop, the Print still gets  
executed once,
and the XmlReader.Node.Type property returns the type of what the reader  
read last,
which is the end of the root element.

A correct (although a bit more verbose) version of the example would be  
this :
https://gambas-playground.proko.eu/?gist=9e84746e67859a9dacb55ec2dba34575

-- 
Adrien Prokopowicz