Null Returned When Selecting A Node In XML Document?
Jun 9, 2009
New to XML. I have a 3rd party webservice that supplies an XML document that I have to update the element values and pass back. The core issue issue is I get an NullReferenceException error when calling the node.RemoveAll() method in the code below. I'm calling the RemoveAll() method because each element has the xsi:nil attribute when it is supplied to me, and if I don't remove it before updating the element value, the XML won't validate by the webservice.The XML document supplied by the 3rd party webservice is as follows:
I've seen have used the XmlNamespaceManager, but I haven't been able to make it work. This xml document has a namespace specified for the TaskData element, and a different namespace for the RequestInfo element. I tried specifying the XmlNamespaceManager variable for each namespace, but got the same results....hovering over the nsmgr variable while in break mode reveals that the "children could not be evaluated" and that the DefaultNamespace property is an empty string.
Public Sub testxml()
Dim doc As New XmlDocument
doc.Load("c: empsample.xml")
When I select a node from treeview, it correctly shows the child form. However, when I close the child form and select the same node from the parent form, nothing happens.
Private Sub TreeView2_AfterSelect(sender As System.Object, e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView2.AfterSelect Dim intNode As Int16 = 0 'set fore color to black Do While intNode < 10 [Code] .....
I have a TreeView that I am using for display purposes only. I don't want the user to be able to select any of the nodes. Setting the enabled property of the form to False doesn't suffice since it changes the entire look of the nodes.
I tried canceling the select action in the BeforeExpand event. It kind of works. It selects, then de-selects the item. I'm going to play around with other events to see
I'v been reading and reading on this subject an from what iv got so far, you add a Node and then append elements to that new node which then appends to the parent node. My current schema for my xml document is as follows[code]...
Is there anyway to check for a null here before it reaches this part of the code? tmpLabelData(0) = m_node.Item("CONTAINER_NAME").InnerText. Some XML has it while others do not. I cant seem to find a nice way to handle a null on these?
The code below works fine as long as there are values within an XML node (For example the <CPU>Intel</CPU> node below) but it throws an Exception error when the node value is blank/null whatever as in the example node <Monitor> </Monitor>.t's ok if the node value is blank, I just want to check for it and not throw an exception error.This question uses the following XML snippet below: Note: The tag <Monitor></Monitor> has no value in it.
That gets me the first vehicle in the XML, so then I will know the ID of the driver of that vehicle based on the GoverningDriverIdInfo/ItemId. Then I need to match that ID with the id property of the driver node. Then get the value of the DriverInputSetGoodStudent node.
<session> <data> <policy> <line>
[code]....
I see that the code didn't paste in the quite correctly, there is an "end session" tag that isn't appearing in the code block.
I am attempting to grab an attribute from an XML file and place it in a VB Class as a string. However when i try to run the program, I get a Null Reference Exception on line 21. why I'm getting this and not the placeID (line 2 on XML code)
Private Shared roomDoc As XmlDocument Private Shared rooms As XmlNode Private Shared roomList As XmlNodeList
I am recieving the following error when trying to execte the java script listed below in the page load event of an aspx web page.
Microsoft JScript runtime error: Unable to get value of the property 'document': object is null or undefined
Dim scriptString As String = ("<script>javascript: window.opener.document.forms(0).submit(); </script>") If Not Page.ClientScript.IsClientScriptBlockRegistered(scriptString) Then Page.ClientScript.RegisterClientScriptBlock(Me.[GetType](), "script", scriptString) End If I am trying to produce a postback.
I am getting a javascript error when I attempt to click on my calendar control.
The html code is: <td align="left" style="width:50%;"><asp:Label runat="server" CssClass="TextFontBold" ID="lblStartDate" Text="Start Date:"></asp:Label>
I am getting this error when I call a javascript function to display a modal window:
Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object
The code block is:
else if (action=="officeview") { document.getElementById("OfficeContent").src="ChangeView.aspx"; ShowFeatureModal('AppView','OfficeContent')
The object is this situation, does exist. Error is caused at: document.getElementById line.What else could be causing the error?
Update:Index.aspx is calling the javascript function which is located in sysUtilities.js file. The source file is yet a seperate page (ChangeView.aspx)
i have a treeview which has a bunch of parent and child nodes preset at design time, there is 1 parent node tho which is called developer, that i want to add child nodes to at runtime.When the form first loads im trying to have it check a text file and for each line in the text file add the text/string from that as a child node tot he 'developer' parent node.
vb Dim reader As String = My.Computer.FileSystem.ReadAllText(Application.StartupPath() & "ConfigDevs.txt") Dim strs() As String = Split(reader, Environment.NewLine) For Each s As String In strs
[code]....
Thats what i have so far, how can i set it so 'Dim parentNode As TreeNode = ' points at the 'Developer' node?
I have a treeview which have a listimage. And it has imageselectindex property (image is yellow ball)My problem is : When i click any node, the image of that node shows imageselectindex . I only want thirth child node will show it. I dont want when i click at first node (rootnode) or child of roodnode , the yellow ballon shows.
i need to check all child node when the parent node is checked and i had do research from the internet but it seem that i had a error which is Type 'MSComctlLib.Node' is not defined.do i need to import any reference? [code]
Basically, it refuses to find the node when the root node contains an attribute.
[code]...
When I do xml.SelectNodes("DataSet") with the xmlns in the root tag, it finds no nodes. If I remove the xmlns attribute, it works fine.How can I make it work while leaving the attribute?
Finding the level of the particular xml using a node value in .Net Experts ! This is my sample Xml.This is a tree structure and T->T.1,T.2->T.2.2,TA->TA.1 - this is the tree strucutre. I know the value of tag . ie 1232,1343.. etc.Using this ID how can I find that 1343 is coming under 1232. or 1490 is under 1090 which is again under 1232.Expected output : if i pass 1490 then I need to know 1490,1090,1232 etc (from that nodeto the top node).I am using .net 2.0
I have a treenode loading and I allow a user to add a node as a favorites node. I am trying to think like the user so I wanted to find out what happens if I deleted the folder form the tree and re-rann the app. Well it comes up with an error:
i am using VB. net 2008. I am having a hard time using this code: ("L:SWPPPSWPPPBookMerge.doc") what is the shortest method that the system will search for the document without placing the document address.
Private _PurchaseDelivery as PurchaseDelivery Protected Overrides Sub InsertItem(ByVal index As Integer, ByVal item As PurchaseDeliveryItem)
[Code]....
Which is inside a class which overrides a custom list base. The code is occassionaly throwing an unhandled exception, System.NullReferenceException, on this line when used in production:
If _PurchaseDelivery IsNot Nothing AndAlso _PurchaseDelivery.DefaultSKUBinID.HasValue Then
DeafultSKUBinID is declared as an Integer? (Nullable Int) in the PurchaseDelivery class. I cannot see what might be causing this error, why would this be returning an error?
