I generate an xml document from a dataset like this:
Dim peopleAdapter As New MySqlDataAdapter("SELECT peopleid,surname,firstnames FROM people WHERE peopletype=1;", con)
Dim peopleTable As New DataTable
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I'm running out of walls to bang my head against. Okay new windows form with a textbox, button and TreeView Populate the TreeView.nodes with the default nodes via properties
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I want to click button1 and have the name of the childnode? Node3? placed in the textbox. Not via selection, I can do that. But via index or item number. The code I have is as follows
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I'm all new to this treeview business. I have a fixed treeview, very simple and basic. Only two levels, parent and child nodes. I just need two things out of this treeview.
1) If parent is checked, check all child nodes.
2) If just one child node is unchecked, uncheck parent node.
That's it! I've been looking for this for 30 mins and I cant find it. Maybe because my vb.net is old, it doesnt seem to be the same as others =/ I'm using vb.net 2003.
I have a problem with my treeview. I have two child nodes with different parents which contains a literal (*x). In this case (*1) (view image)
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Is the following possible in one XPath expression (see sample below) Select all (span tags of class msg) AND all ((img tags that have a non-empty alt attribute) AND (are NOT located inside a span tag of class msg))
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I have a treeview that is populated from a HDD folder collection. Its structure is similar to the following (however the structure is dynamic):
My Disk:
|
|--folder1(tag:folder)
| |--subfolder1(tag:folder)
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I call the sub as follows:
deleteNode(treeview1.Nodes(0).Nodes)
However, the above is not working properly. It deletes only some nodes and not all the targeted nodes.
OK, so I have the code to add a Child Node to a selected node in ta TreeView. The thing is, even if I select a child node to "add" to, it adds the new node to the parent of the selected child node.
I know why it does that: TreeView1.Nodes(TreeView1.SelectedNode.Index).Nodes.Add() adds to the first node. So how do I progamatically add to the child node I have selected, not it's parent node. I can't figure out the logic on how to accomplish this.
NOTE: There can be an infinite amount of child nodes.
UPDATE: I just found out that if I have a child node selected, TreeView1.SelectedNode.Index returns -1 since there is nothing selected in that first level. I'd have to use TreeView1.Nodes(0).SelectedNode.Index to get the proper index for the ChildNode. *sigh*
how to add treeview nodes and sub sub nodes using functions
View 1 RepliesWe have a problem to read a simple xml.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<info>
<info_id Id="123456" information="Last task" />
<action actionid="1234" action_operation="ALL" action_type="1">
<place place_type="ZZV" Encoding="HexString">FTRE1423</place>
</action>
</info>
Can someone give us script for reading the information?
I have a form with a treeview control (trvControl) which is created at design time. I have a sub which creates a temporary treeview (trvTemp) and adds a bunch of nodes to it. It then uses treeview.nodes.copyto and treeview.nodes.addrange to copy these nodes to the control on my form:
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It all seems to be working except for one thing - nothing appears in trvControl.
I've run through the code and the node collection is definitely getting copied (I paused in another sub and checked trvControl.nodes and it was correct) but trvControl is still empty on my form.
Incidentally, the reason I am doing this is that I want to use a background worker to populate the nodes but don't want my app locking up for large amounts of time while I access the treenode through an invoke so I thought if I generate the node collection first and just use the invoke to load it into the array it would work better.
I'm new to this Visual Basic stuff. I have TreeView under the name of TreeView1 and it has two Parent nodes, one is Library and the other is Store. Under Library and Store I have childnodes and thats were I'm stuck. For example under Store there is Downloads and Apptrackr.
What I want is when a user clicks on Apptrackr it runs this piece of code
WebBrowser1.Visible = true
DownloadsBrowser.Visible = false
And when the user clicks on Downloads it then does the opposite
WebBrowser1.Visible = false
DownloadsBrowser.Visible = true
I am not sure I am getting the concept of referencing nodes in a treeview. When I hard-code nodes like:
tnParentNode = New TreeNode("ABC")
tvReports.Nodes.Add(tnParentNode)
tnParentNode = New TreeNode("Some Other Company")
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I get two parent nodes and one child off Some Other Company. However, when I pull information from a couple of tables to set up the parent and then the child nodes, I only get the parent nodes.So I pull the main parent nodes from one table and the child nodes from another table.This code pulls the parent nodes without any problem:
strSQLText = "SELECT lID, sCatName FROM Category ORDER BY iSortOrder DESC"
reader = GetReader(strSQLText)
While reader.Read
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But this does not add the child nodes. I am assuming it is because of the first line in the above reader.read while loop. I must not be referencing the proper parent node but I am not sure how to do it.
I have a treeview. The root nodes have images set at 30x30 - is there a way to add child nodes with NO image or a smaller image? I can do a blank image, but each child is spaced far apart! I would like the child nodes to be like there is no image... tight and close to each other.
View 13 RepliesHow can i programmatically create a treeview consisting of several nodes and each node has several children.I want to read the nodes and children from a table and fill them accordingly, so how can i do this?
View 1 RepliesI have the below code that take a txt file as input and write the nodes of the tree at the end of the line.
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I am working on Treeview control and Gridview Control VB.NET08. In the Treeview i have Parent and Child Nodes. Like:
- 31
3101
3102
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Is there an easy way to consume xml to access any of the nodes directly without reading line by line?Here is a sample set of the xml working with. It contains two records of data. I am trying to find a way to load it so if I wanted to get say PostalCode and say Site SID value quickly.
HTML
<?xml version="1.0" encoding="utf-8"?><MainSite><MainSites Found="201" Returned="20" Status="0"><Site SID="123456"><Relevance>0.985</Relevance><Title>JDoe</Title><DateModified Date="2010-01-29T01:05:00">1/29/2010</DateModified><DateCreated Date="2010-01-29T01:05:00">1/29/2010</DateCreated><PersonalData><Confidential>0</Confidential><Name><First>John</First><Middle>
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I trying to get what I think should be a simple thing. I have a checked treeview. I need to get the text of each checked node into a string. For the life of me I can't get it. I am trying to loop thru all the nodes and see if they are checked but I keep getting a "object reference not set to an instance of an object" but I don't know why.
Dim value As String
Dim node As TreeNode
Dim i As Long
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I have an xml document and I loaded it to work with:
Dim doc As New Xml.XmlDocument
doc.Load("test.xml")
I want to access one of the nodes. It's the third child node of a parent node. How can I get there?
How can we get the text between XML nodes
<company>
<data id="14" />{<data id="15" />DOCUMENT<data id="23" />pet<data id="24" />DOCUMENT<data id="25" />
</company>
I need data between id 23 and 25 (i.e pet DOCUMENT). I have loaded this xml in xmldoc.
i am trying to delete a node based on the userName input:This is the set up of my xml File:
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I have a XML file that stores information about an application I am trying to read and it looks like this:
<Data> <Login UserName="Username" Password="Password"/> <Application Name="AppName1" Key="Key1" Owner="Owner1"/> <Application Name="AppName2" Key="Key2" Owner="Owner2"/> <Application Name="AppName4" Key="Key3" Owner="Owner3"/> <Owner Name="Owner1"/> <Owner Name="Owner2"/> <Owner Name="Owner3"/> </Data>
After all of the applications are put in I want a list of the owners stored separately like that are. I have my program write it and it works fine but when I try to read from the XML file I get the applications but the separate owners list doesn't read at all. Here is my code that I have:
Dim x As Integer Dim z As Integer '//Declare XML Reader Dim Reader As New XmlDocument() Reader.Load("ProData.xml") '//Try reading Applications Try '//Read Application Element Dim nods As XmlNodeList = Reader.SelectNodes("//Application")
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working with xml with same nodes. here is my xml file:
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We have a problem to read a simple xml, see attchment. (rename txt to xml)
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<person_info>
<address street="NY street" number="123"/>
</person_info>
Can someone give us script for reading street and number?
I have following xml:
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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 ...
Following is the code for TreeView in XAML:
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I am able to get the pnode added to the TreeView and all the node breakpoints are hit. The problem is that in the TreeView, I am only able to see the parent view arrow, the rest of the name, image, etc. are not getting displayed. It is like this: How can I fix this?
I'd hate to have to create my own control, but will attempt to if it comes to it.
I need to display columns within a TreeView node so I can display specific information about that item within columns.
Think of a ListView as a TreeNode. That's basically what I'm trying to get at.
I'm hoping for a relatively easy solution, but I can't imagine this would be too easy.
I am trying to add nodes to a treeview that come from different databases, but at the moment i am just trying to add the first set from the first database.
The link between the child and the parent is the ID column in the parent nodes access database this number is in a column in the child database called Section, i am trying (unsuccesfully) to use queries and If statements.
I am assigning the ID column from the parent database to the .Tag property of the parent node and then i am trying to use an if statement within the query "asking" if the parentNode.Tag = number in section column Then Add new node, but i haven't done it right. The code is below:
While RetVal3.Read
If RetVal3(0).ToString = SectNode.Tag.ToString Then
Call AddCalcNodes(SectNode)
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How to check child nodes tag.
MessageBox.Show(TreeView1.SelectedNodeChild.Tag)
quick question, i have two treeviews and what i want to do is be able to click on a node in one and have it added to the other. This code doesn't error but it doesn't seem to be doing anything. am i missing something wrong?
Private Sub tvdwindexes_Click(ByVal sender As Object, ByVal e As TreeNodeMouseClickEventArgs) Handles tvdwindexes.NodeMouseClick
' Clicked on an item in th etree view.
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