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VB.NET help with function parsing XML

Posted on 2008-10-01
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Last Modified: 2010-04-21
I am having trouble creating a function that will be able to parse specific XML data & raise events based on the contents. I've attached an example XML string.

Desired end result would be a function like:

ParseXMLData(sData)

Basically it should parse the INT_ACTION lines and raise events for CALL, PUSH & TALK

Then I'd like it to raise events like:

RaiseEvent onCall(sUser, sAct, sArea, sSatic, sMethod, sDial, sKey)
RaiseEvent onPush(sUser, sAct, sArea, sSatic, sPerm, sDial, sKey)
RaiseEvent onTalk(sUser, sAct, sArea, sSatic, sPad, sDial, sKey)

As of right now I am just trying to use some simple string functions but I realized there has to be a better way... any help would be greatly appreciated
<USER_ACTIONS>
	<INT_ACTION user="samson411" act="CALL" area="" static="" method="" dial="7">telephone</INT_ACTION>
	<INT_ACTION user="jonesj" act="PUSH" area="" static="" perm="1" dial="">empty</INT_ACTION>
	<INT_ACTION user="genie23" act="TALK" area="23" static="" pad="" dial="">sup</INT_ACTION>
	<INT_ACTION user="handymanNY" act="CALL" area="" static="" method="" dial="OP">telephone</INT_ACTION>
</USER_ACTIONS>

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Question by:mcainc
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4 Comments
 
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Expert Comment

by:TimCottee
ID: 22613366
Hello mcainc,

It would be something like this:

Regards,

TimCottee
Imports System.Xml
Imports System.Xml.XmlDocument 
Public Event ........ 
Public Sub ParseXMLData(ByVal sData As String) 
 Dim xData As XmlDocument = New XmlDocumetn
 xData.LoadXml(sData)
 For Each xAction In xData.SelectNodes("USER_ACTIONS/INT_ACTION")
   Select Case xAction.Attributes("act").InnerText
   Case "CALL"
    RaiseEvent onCall(xAction.Attributes("user").InnerText,xAction.Attributes("act").InnerText, xAction.Attributes("static").InnerText, xAction.Attributes("method").InnerText, xAction.Attributes("dial").InnerText, xAction.InnerText)
   Case "PUSH"
   ....
   End Select
 Next
 xData = Nothing
End Sub
  

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Author Comment

by:mcainc
ID: 22613460
thanks tim,

i'm getting an error here: Select Case xAction.Attributes("type").InnerText

A first chance exception of type 'System.MissingMemberException' occurred in Microsoft.VisualBasic.dll

Property InnerText is WriteOnly

any idea?
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Accepted Solution

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TimCottee earned 500 total points
ID: 22613529
mcainc,

For Each xAction As XmlNode In xData.SelectNodes("USER_ACTIONS/INT_ACTION")

Without the declaration it raises this error, I was obviously typing too quickly and missed it out.

TimCottee
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Author Closing Comment

by:mcainc
ID: 31501927
perfect!!!
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