Just playing about with LinqToXml and I need to form a xelement as follows:
Dim xe As XElement = _
<Xml>
<ElementOne>
<SubElement></SubElement>
<SubElement></SubElement>
[Code]...
This creates an error here: xsi:type "XML namespace prefix 'xsi' is not defined"
Is it possible to write this in Linq to xml?
I would like the following function to return Nothing if the element with the specified key is not in the collection. Instead, it returns an error - something to the effect of "no element found"
Public Class MyCollection
Inherits System.Collections.ObjectModel.Collection(Of MyType)
Public Function FindByActivityKey(ByVal searchValue As Integer) As MyType
[code]....
i have a xml file thats looks like this:
<Item xmlns="Element1">
<SubItem>item1</subitem>
<SubItem>item2</subitem>
<SubItem>item3</subitem>
<SubItem>item4</subitem>
</Item>
[Code]...
And then i want to add 1 SubItem for every item in my listbox to one specific element without touching the other code. I already have the code for saving listview items to xml.
Public Class Form1
Dim ds As New DataSet
Dim xd As XDocument
Dim Qual1, Qual2 As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
How do I make it so when I click the button it saves to the selected element that is selected in cb
My question is my code for populating employee information based on the name selected in the combobox cb works, However I need to be able to write QUAL1 and QUAL2 to the employees whose name is in the combo box.
I'm making my own ToDo program, and I need to add the ability for the user to create a ToDo item. When they do this, I need to be able to add in an XML element/section in a list file.My XML file looks like this:
<?xml version="1.0" encoding="utf-8"?>
<list>
<item>[code].....
Say if a user created an item with the name 'papers' and due date 'Tomorrow', I need to be able to make another list element like above and insert it before the </list> tag. Basically I'm asking how can I write to my XML file at a specific position (at the end before the </list> tag)? Is it possible just to go to the end of the file and go back a line?
The XML sample below has two records and each record has three similar Nodes (<datafield tag="500" >) What I want to accomplish is get the value of the second Node <datafield tag = "5000">. The fallowing code I gets the value for all three nodes but I want something like get elementat(1). I tried this but it didn't worked MsgBox(xEle.Elements.ElementAt(1).Value)
Code:
Dim xd As XDocument = XDocument.Load("C:UsersstopeteDesktopMarc_convertxml.xml")
If xd IsNot Nothing Then
Dim datafields = From datafield In xd.Descendants("datafield")
[code]....
I'm adding an element to existing XML doc with the following code:
Dim theXMLSource As String = Server.MapPath("~/Demo/") & "LabDemo.xml"
Dim nodeElement As XElement
Dim attrAndValue As XElement = _
[code]....
It makes error like this:
System.NullReferenceException: Object reference not set to an instance of an object.Object reference not set to an instance of an object.Error line: nodeElement.Add(New XElement(attrAndValue))
Please excuse my stupidity, I tend to find the traversing XML overly complicated.
[Code]...
Once it gets to staffBio I get an error saying "Object reference not set to an instance of an object." obviously because that node does not exist. My question is how can I assign the value to a variable even when it is empty without having to do a conditional check before each assignment?
I'm editing XML element with the following XML:
<?xml version="1.0" encoding="utf-8"?>
<!--Test XML with LINQ to XML-->
<LabSerivceInfo><LabService>
<ServiceType>Copy</ServiceType>
<Price>1</Price></LabService>
[Code] .....
How to update the ServiceType and Price where ServiceType = varServiceType?
Using VB.NET (3.5), i have an ArrayList of Employees. I'm trying to build an XML representation (to feed another system) and one of the fields is a simple incrementing ID, starting at 1.[code]...
View 1 RepliesUsing the XML elements below, I am trying to locate all table elements where they have a column@Name equal to a specific item such as "email" and return the Database@Location and Table@Name. My LINQ statement returns the proper table@name but for each element found returns the first database@Location for both. So my question is, how can I search for a column@Name and return the proper Database@Location and Table@Name [Code]
I'm trying to update an element in the XML document below:
Here's the code:
Dim xmldoc As XDocument = XDocument.Load(theXMLSource1)
Dim ql As XElement = (From ls In xmldoc.Elements("LabService") _
Where CType(ls.Element("ServiceType"), String).Equals("Scan") _
[code]....
But, I got this error message:
Object reference not set to an instance of an object.Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Error line:ql.SetValue("23")
I'm a bit of a LINQ newbie and I was having some trouble with the following. I'm trying to perform a query using LINQ on an XML file and store the results in a list of DataClass objects that match the XML.I've got an XML file that is defined like this:
<NewDataSet>
<NewDataTable>
<Field>Accepted ASNs</Field>
<Val>59</Val>[code]....
I have created a Data class to support this XML format. What I would like to do is create a LINQ Query to grab these 3 records and store them into a List of my DataClass. In order to support multiple Order elements, I have my class defined with a generic list of "Order" structs... It looks like this:
Public Class ASNData
Private _field As String
Private _value As String[code].....
how to grab the 3 order elements and store them into my list of Order structs.
It has two records and each record has three similar Nodes (<datafield tag="500">). What I want to accomplish is get the value of the second Node <datafield tag = "5000">. The following code I gets the value for all three nodes but I want something like get elementat(1).I tried this but it didn't worked.
MsgBox(xEle.Elements.ElementAt(1).Value)
Dim xd As XDocument = XDocument.Load("C:UsersstopeteDesktopMarc_conv ertxml.xml")
If xd IsNot Nothing Then
Dim datafields = From datafield In xd.Descendants("datafield")
Where (datafield.Attribute("tag").Value = "500")
[Code]...
I have a XML xElement like[code]...
In order to get rid of Trick nodes where value is null, I wrote:
myXmlElement.<Play>.<Trick>.Where(Function(m) m.<Trick>.Value = "").Remove()
I am trying to write a LINQ query which will return true if there are multiple objects which have a property with the same value.
Here is what I have come up with so far:
Formatters.Where(Function(f As DataModel.Formatter) _
Formatters.Select(Function(f2 As DataModel.Formatter) f2.Name.ToLower()).Contains(f.Name.ToLower())).Count > 1
However the above always returns true as long as their are more then 1 elements in the list?
I have a generic list - SupportedTypeGroups. Each SupportedTypeGroup has SupportedTypes property (generic list of SupportedType). How to construct a Linq query to locate SupportedType with required name?
View 3 RepliesI am using linq to fill a gridview with the information from an xml from code behind. I would like to order my Grid according to one of my elements in the xml ("value element").
gvResourceEditor.DataSource = (From resElem In resourceElements.Elements("data") _
Select New With { _
.Key = resElem.Attribute("name").Value, _
.Value = HttpUtility.HtmlEncode(resElem.Element("value").Value), _
.Comment = If(resElem.Element("comment") IsNot Nothing, HttpUtility.HtmlEncode(resElem.Element("comment").Value), String.Empty) _
}).OrderBy(?????)
I am new in LINQ world.I need an urgent help in reading the xml elements using LINQ with specific where condition.I need to find the max air_temp for a county i.e where county name = "Boone" and hour id = "06/03/2009 09:00CDT".[code]
View 3 RepliesI have to create an xml doc for a vendor who specifically states they must have their xml as follows:
<?xml version="1.0" encoding="utf-16" standalone="yes"?>
<WMWROOT xmlns="http://www.blahblah.com/BLAH/Interface">
<WMWDATA>[code].......
I cannot find a way to get LINQ to spit out xml the way they want. Question is, can LINQ do it or do I need to resort to hardcoding the xml the old way before LINQ to XML?
xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
[code]...
i am having trouble reading my XML settings. I Create new entries like this
Private Sub Create()
Dim doc As New XDocument
If File.Exists("Settings.xml") Then
doc = XDocument.Load("Settings.xml")
[code]....
The XML file will have multiple <Network> Entrys. I cant figure out how to loop the file and get every <Server> entry. But then if i opened a form and gave the variable one of the server entries how could i get that <Network> based on the server entries child parameters.
how to create a lamdba expression instead of using a regular comprehension linq queries. All of the examples i see are not query a database using linq to sql. i want to able to construct a lambda expression that get my the orders from the northwind database where the country equals "us". I know how to construct this using the standard linq query, but just not using lambdas in vb.net.
View 1 RepliesI have a number of rewrite rules for a lot of things that I did in IIS7, like removing trailing slashes, canonnical URLs, lowercase lettering, and such. IIS altered my web.config, and everything works fine on the website, like it should. But in the Visual Studio web.config, the opening < rewrite > statement is underlined in blue, and at the bottom of VS, it says that the element 'system.webServer' has invalid child element 'rewrite'. But this is how IIS made it. I didn't do this manually. Should I be concerned with this VS error, or should I just leave as be, since it's working how it should work? Here's an example of my web.config:
[Code]...
Is there a way to control the way a browser behaves such as if I click on this link it doesn't navigate to that link but instead show me the source code behind that button?
View 1 RepliesI need to randomly pick an element from an array and I can only use that element three times,I can randomly pick the element but how do I go about only using it three times.
View 4 RepliesI have been doing well and also I am a noob I know it and you know it a lot has started making sense and I am evening figuring new things out without using Google but of course I have hit another snag in my program so here goes
I am waiting for an email to arrive (the page automatically refreshes) and then I want to click the link (I do not need to click to open the email or anything like that) I also have the code to click and navigate to the address reason being it was the only way I could figure out how to stop it opening in a new window on IE
So my only problem is I need a way to check every x seconds for the element and then if its there proceed with my code and if its not wait and then check again or however this is done in VB.If this is not the way its done please point me in the right direction the code I am using to find and then navigate to the link is
Dim emailpageelements As HtmlElementCollection = WebBrowser2.Document.GetElementsByTagName("a")
For Each emailver As HtmlElement In emailpageelements
If InStr(emailver.InnerHtml, "https://twitter.com/account/confirm_email/") Then
WebBrowser1.Navigate(emailver.InnerText)
[Code]...
I want to be able to reference an element in an array of structures by the name of the element in a visual basic 2010 function. For example
Public Structure myStruct
Public element1 as string
Public element2 as integer
Public element3 as boolean
[code]...
Is it possible to reference a structures element by the element's name in a similar way to that shown above. The code shown above does not work, as the expression obj(i).[elementName] does not work as hoped.
I have the following XML:
[Code]...
I am accessing the name of the child element like this:
[Code]...
I would like to associate a web page element, a textbox for example, with a textbox in my form. When a user types something in the textbox, I would like it to be like he types it on the webpage.
View 1 Replies