Retrieve specific values from specific nodes - VB.NET XML HTTP GET
Question
I have a program I am writing that calls a Feed using HTTP GET that returns XML.
I have written code to be able to read each Element and their Values but I only wish to retrieve specific Element Values to specific variables.
I could use nested If statements to check for the 'reader.value' and then put it to the relevant variable but feel this seems cumbersome and would like to have a better understanding.
This is my current code:
Const URLString As String = "https://geturl"
Dim reader As XmlTextReader = New XmlTextReader(URLString)
Do While (reader.Read())
Select Case reader.NodeType
Case XmlNodeType.Element 'Display beginning of element.
Console.Write("<" + reader.Name)
If reader.HasAttributes Then 'If attributes exist
While reader.MoveToNextAttribute()
'Display attribute name and value.
Console.Write(" {0}='{1}'", reader.Name, reader.Value)
MsgBox(reader.Value)
End While
End If
Console.WriteLine(">")
Case XmlNodeType.Text 'Display the text in each element.
Console.WriteLine(reader.Value)
Case XmlNodeType.EndElement 'Display end of element.
Console.Write("</" + reader.Name)
Console.WriteLine(">")
End Select
Loop
This is the information that is returned:
<result id="4198608" generated="1399463340" mode="live" account_id="428">
<vrm>GY08OJB</vrm>
<make>AUDI</make>
<model>A6 SE TDI</model>
<colour>BLACK</colour>
<body>ESTATE</body>
<doors>5 DOORS</doors>
<engine_size>1968</engine_size>
<fuel>HEAVY OIL</fuel>
</result>
I wish to return each individual node to an individual record so I can return it to some textboxes.
Cheers :/
2 answers
solution1
1 2014-05-07 14:34:44
Since you use VB.Net you can go the easy route and use XML literals:
' Load your xml into an XElement '
Dim xml = <result id="4198608" generated="1399463340" mode="live" account_id="428">
<vrm>GY08OJB</vrm>
<make>AUDI</make>
<model>A6 SE TDI</model>
<colour>BLACK</colour>
<body>ESTATE</body>
<doors>5 DOORS</doors>
<engine_size>1968</engine_size>
<fuel>HEAVY OIL</fuel>
</result>
Dim vrm = xml.<vrm>.Value ' is now GY08OJB '
Dim make = xml.<make>.Value ' is now AUDI '
Dim model = xml.<model>.Value ' is now A6 SE TDI '
solution2
0 2014-05-07 13:38:15
I used the following for anyone that is interested:
Dim strReg
Dim doc As XmlDocument = New XmlDocument()
doc.Load(myURL)
doc.SelectSingleNode("<root>/<node>").InnerText
Cheers.
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