extract xml value from one node

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HTML

<booking>
<booking_parts>

<quote>

 <quote_entry cet_id="A" amoount="20" /> 
<quote_entry cet_id="B" amoount="40" /> 

</quote>

</booking_parts>

</booking>

I want to get amount 20 from this xml, any idea?

Posted 26-Mar-15 23:18pm

Member 11491784

Updated 26-Mar-15 23:19pm

v3

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Member 11491784 27-Mar-15 6:41am

doc.LoadXml(strdata)
Dim root As System.Xml.XmlNode = doc.SelectSingleNode("//quote")
Dim Book As System.Xml.XmlNode
Book = root.SelectSingleNode("quote_entry[@cet_id='A']")

From this code i got 1 row of quote entry, how can i extract the value 20?

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Mario Z · Accepted Answer · 2015-03-27T03:04:00

Solution 1

Hi, well I see you have successfully retrieved the desired XmlNode. All that is left for you is to retrieve the required attribute from that node.
So something like this:

VB

Dim bookAmoount = Book.Attributes("amoount").Value

Also just in case you're interested you can simplify your code with something like this:

VB

Dim bookAmoount = doc.SelectSingleNode("//quote/quote_entry[@cet_id='A']").Attributes("amoount").Value

Posted 27-Mar-15 3:04am

Mario Z

Comments

Member 11491784 31-Mar-15 3:45am

And can you tell me how Can I update the Xml with updated value. Thanks

Mario Z 31-Mar-15 4:32am

Well that depends on where you want your XML, do you want it in a file or a string?

In case it's in a file you would use Save method on your XmlDocument, for example:

doc.Save("desired-output-file path.xml")

In case it's in a string you can either use a OuterXml property of your XmlDocument, for example:

Dim xmlData = doc.OuterXml

Or you can write it to StringBuilder with an XmlWriter, for example:

Dim xmlData As String
Using stringWriter As New StringWriter()
Using writer As XmlWriter = XmlWriter.Create(stringWriter)
doc.WriteTo(writer)
writer.Flush()
xmlData = stringWriter.GetStringBuilder().ToString()
End Using
End Using