Reading An Xml File With XmlDocument Class
Nov 11, 2009
I'm having trouble reading a simple xml file with the XmlDocument class. Here is my xml file:
[Code]...
I want the title attribute of the node but it gives me a message box instead saying: "System.Xml.XmlAttribute" How can I convert that or in some other way get the title attribute of the books? Another problem I will be running into is storing the books and readers in a 2D array dynamic array. How can I run through the <readers> nodes to store them in an array within the nodeTitle For Each loop?
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May 23, 2012
I have published xml document through web service like this
<WebMethod()> _
Public Function HelloWorld() As XmlDocument
Dim xmlDoc As New XmlDocument
[code]....
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Oct 29, 2009
I've got an XMLTextWriter writing to a Stream of a WebRequest. Everything works as it should:
Dim wr As WebRequest = WebRequest.Create("https://wwwcie.ups.com/ups.app/xml/ShipAccept")
With wr[code].....
How can I intercept this XML that's being written as an XMLDocument type? I tried snagging it from the stream but that gave me a 'The stream does not support reading.' exception
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Mar 2, 2009
I am currently trying to load an XML file into my app. However, it keeps throwing an exception error (InvalidOperationException - Object reference not set to an instance of an object) and I can't work out why. have a look at the code below and see if you can spot the error? I'm still very much a beginner so i'm sure it will be something simple..
Public Class FrmXMLReaderTest
Inherits Form
Friend WithEvents txtOutput As TextBox
[Code].....
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Jun 21, 2010
I'm attempting to load an xml document from an XML column in MSSQL 2008, into an XmlDocument (see code below).
Sometimes the code will break at the xdoc.Load(xr) line with the error "Unexpected end of file and occurred". After breaking, the XmlReader has a value of "None".
While researching the problem, I saw posts that referred to a 4Kb limit on StreamReaders and figured this may be related somehow. So I cut down the size of my document (to around 4Kb) and everything worked fine.
On average, the XML documents I'm importing from the database are 20Kb.
how to get a 'large' amounts of XML from the database into my XmlDocument?
Dim xr As XmlReader = ExportAdapter.GetEditedCheckXML(chkId)
Dim xdoc As New XmlDocument
xdoc.Load(xr)
[Code].....
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Feb 24, 2010
My code is crap, so I don't really think it will be useful because I've been going about it differently than I really want to:[code].....
I really don't wanna be loading a file in, I just wanna use XMLDocument() to create a file from my DataTable.But, my file ain't coming out right and I'm sorta just lost as to how this is all supposed to fit together.
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Jan 4, 2010
Do you have a sweet solution in VB (visual studio 2008) to read an OWL file and display nodes on a treeview? It works great for XML but not for OWL when nodes are like as follow: [Code]
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Sep 9, 2010
I want to reading in a excel file and extract the sCodenumber sDescription ans the sStatus and store them in a array : StatusComposeArray(5200) As MyCompose. After this I need this array for comparing outside this class. But as can you see the array is defined inside the sub: ReadingIn_ExcelFilesCompose [Code]
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Jul 22, 2011
I have a class (see below)
Imports Microsoft.VisualBasic
Imports System.Data.SqlClient
Public Class ClientProfile
#Region "Variables"
[CODE]...
It is in the file ClientProfile I have placed in both App_Code and also App_Code/Models
In my code behind I have the following
[CODE]...
The last word, "ClientProfile" has the scary squiggly red line below it. It is not recognizing my class.Even the Intellisense is not picking up te class. Do I have to register the class file in any way?
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Jun 2, 2010
Somewhat new to SQL and processing loops. I have a non-keyed file and I want to get the next record in sequence .. grab data needed and update it as used. This class is called from a GUI interface so I only need to grab the NEXT record each time..
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Aug 7, 2009
I'm trying to take a resultset, store in a class then retrieve the complete record for a given value. For example, the recordset has AnalystID (Unique), LastName, FirstName. I want to be able to pass the AnalystID and return the name. I need the ability to look up either last or firstname by analystID throughout the program. Here's what I have so far. I'm not sure I'm even headed in the right direction.
[Code]...
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Jan 2, 2010
I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
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Nov 2, 2011
I am able to query/read the "Application" event log using System.Management classes in VB.net 2005 (win xp)But I have problem reading the "Message" / "description" of my custom event log.I am getting a System.NullReferenceException{"Object reference not set to an instance of an object."} while reading the "Message" / "Description of the event log while it is reading the others properties.Also when I use System.Diagnostics.EventLog and read all the Events on by one I am able to read the message/description of my custom event log. Why is that the System.Management classes can't read the my custom event log messages while the System.Diagnostics.EventLog classes can read them.The reason I want to use System.Management classes is bcoz I can query my custom event log where as with System.Diagnostics.EventLog classes I have to read the whole event log.
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Jan 25, 2011
I am able to query/read the event log using VB.NET 2005 (Win XP). But still I have a problem reading the "Message" / "description" of the event log.I am getting a System.NullReferenceException while reading the "Message" / "Description" of the event log.Also when I use System.Diagnostics.EventLog and read all the Event on by one I am able to read the message/description of the event. This is the code:
Public Sub ReadEvent()
Dim iCount As Int16
Dim PastFourHours As Date = Date.Now.AddHours(-4)[code]......
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Mar 31, 2010
I've reached a point where it's time to learn how to Read/Write XML files properly and I'm really confused to how we're supposed to do this. I've been reading up on using the XmlDocument, but all I'm finding is how to use it to read xml files. Right now I need to Write them, later I'll code the reading of them.
The data for the XML file comes from a couple of tables in a database too, I've got a Master/Child table (actually there's 5 child tables). I've got the data coming into DataTables and I've got the loops set up already, I'm just stuck to how do I take the Master table's row and store that data as an XmlNode then loop each of the 5 child DataTable's and add each row as a child node to the master's node.
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May 29, 2012
and other non-visible characters such as whitespace in XmlDocument?I tried PreserveWhiteSpace = False and IgnoreWhiteSpace = True for XmlReaderSettings, but those didn't work.
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May 4, 2009
I need to write data to a file, preferably in binary format, but I am unaccustomed with the concept. Where's the easiest place to get the basics? I could come here with a specific need, but I'm at the point right now where I am more willing to work within the confines of keeping it simple.
Here's what I know:
1. how to open a new file
2. how to specify the record length
3. how to close the file
Some specific questions:
Does the record length have to be constant throughout the file?
Can I read the nth record without reading the whole file?
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Jan 31, 2012
I have following xml:
[Code]....
and I need to pick node from Id 25 to id 75. It is a portion of XML. Original XML is very long. How to do it without XPath? Dim nodeList As XmlNodeList = xmlDoc.SelectNodes("//Node[@id >" & 25 & " and @id <" & 75 & "]") Dim sb As StringBuilder = New StringBuilder For Each childNode As XmlNode In nodeList sb.Append(childNode.InnerText) Next but it is not working ...
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Jan 8, 2010
How can i use XmlDocument.GetElementById method? It is always return Nothing
Code:
Private mXmlDoc As XmlDocument
Public Sub Read(ByVal strFileName As String)
[code].....
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Dec 13, 2010
I have a really simple example that reproduces an error that I'm seeing.
Module Module1
Sub Main()
Dim TransDoc As New System.Xml.XmlDocument()
[Code].....
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Apr 7, 2010
This is a spin off of my other thread: Write XML using XmlDocument
Now I have it creating an xml file and everything's good, I'm working on the the reading of it now. Here's my current
Try
Dim XmlDoc As New XmlDocument
XmlDoc.Load(m_ImportOpenFile.FileName)
[Code]....
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Jul 17, 2010
I'm trying to send a XML serialized class over a network stream the send is working
Dim IP As Net.IPAddress = System.Net.IPAddress.Parse(IPAddress)
Dim IPE As New Net.IPEndPoint(IP, 10003)
Dim TCPClient As New Net.Sockets.TcpClient
[code].....
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Mar 16, 2009
I am ably to load a XML file (via a filepath) to a datatable. See code below.However, I'd like to be able to load a in-memory XML document to a datatable.
Code: Public Function XmlToDataTable(ByRef filePath As String) As DataTable
Dim ds As New DataSet Dim dt As New DataTable ds.ReadXml(filePath) dt = ds.Tables(0).Copy()
Return dt
End Function
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Jun 19, 2012
I have two XmlDocuments that both have a namespace attribute specified. Both documents have the same structure, but contain different data. I can't seem to get a specific node tree from one document added to the end of the same node tree in a second document. Here is an example of my two documents:
Document #1:
<?xml version="1.0"?>
<rootnode xmlns="http://www.mynamespace.com/Service/2012-06-18">
[code]....
I certainly know this is wrong... I've tried serveral different approaches. This particular approach adds all <Item> nodes to the destination document, but it adds them to the very bottom of the document instead of after the last <Item>. how to add a specific node tree an XmlDocument to a specific position in another document? Again, there is a namespace involved and the <Item> nodes have nested nodes/elements under each one.
NOTE: The <Id> nodes have example data to show uniqueness only. I can never count on any kind of numbering. The order of each <Item> node is totally unimportant. I'm just assuming it will be easiest to add additional <Item> nodes after the last one in the destination document.
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Jul 20, 2010
I am having some problems building a properly formatted SOAP message using XMLDocument in VB.NET(C# answers are fine though). I am using the following code to manually create my SOAP message, what is happening is that the namespace prefix of the soap:Header and soap:Body are being stripped in the output XML:
[Code]...
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Feb 19, 2012
trying to parse this:
<?xml version="1.0" encoding="UTF-8"?>
<directoryresponse xmlns="https://www.sisow.nl/Sisow/REST" version="1.0.0">
<directory>[code]......
Here's my code:
XPath = "//directoryresponse/directory/issuer/issuerid"
Dim nodeList As XmlNodeList = XML.SelectNodes(XPath)
but nodelist.count=0...why?
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Jan 6, 2011
Consider the following XmlDocument with namespaces:
<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
<DataSources>
[code]....
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Oct 28, 2011
Whenever I try and get the InnerText of an element using an XmlDocument, it throws a NullReferenceException. Here is the code below:
Dim SetDoc As New XmlDocument
Dim xmlString As String = "<upload><links><bananas>apple</bananas><original>thirteen</original></links></upload>"
[Code].....
The same happens when I load exactly the same XML from file.
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May 13, 2011
Example:
Two files - TestClass.vb, myForm.vb
TestClass.vb looks as follows:
Imports System.Threading
Public Class TestClass
Private myClassThread As New Thread(AddressOf StartMyClassThread)
[code]....
The result:Application runs, no errors or exceptions.Displayed is the listbox and the Start button.I press the start button and a msgbox says "Not Invoked" as expected and upon clicking OK to that msgbox "Start Button Pressed" is added to the Output listbox control.Immediately following that the msgbox pops up again and says "Not Invoked". I was expecting "Invoked" as a separate thread is trying to use the Output listbox control.Of course this results in the Output.Items.Add being attempted which results in no visible result as the thread is not allowed to directly update the UI control.
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Aug 17, 2010
Visual Studio 2008. .NET 3.5 VB 2008 or VB9 as it is also called. I have an XML file that I need to parse efficiently. I had completed the project by means of pulling the document into an array and pulling the variables I needed via looping through the array. This turned out to be very inefficient as the file is quite large.
I am now looking into using XmlDocument or Linq to XML so that I can pull the variables that I need without looping. I read that Linq is the fastest so I was trying to go that route.
I have searched all over the place for examples of parsing xml documents and I can't find exactly what I need.
My XML file is formatted somewhat like this:
Code:
<Folder>
<set>
[CODE]............
The idea is that I need to get those <fp> values for certain f_types only. Not only that, but it also needs to <set> specific. You will notice that the second "<set>" has a <num> Value of 2 within the <data> tags.
So... I need to find a way to search for say all the <fp>'s in set one that are of f_type 5 only, exlcuding all of set 2's f_type 5. This XML is not ideal but re-formatting the XML is not an option for me. I have to work with what I got.
After hours of googling all I was able to do was pull all the Element values for each <F> child nodes if they included a f_type value of 5. But... It does it for the whole doc, not just the 1st set like I need.
I will post what I have so far: It is not much but I can't find great info on using Linq to xml that does what I am trying to do.
[Code]:.....................
This doesn't even need to be enclosed in an XML block but for some reason it wouldn't work unless I put it into XML block.
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