Treeview Control / Select Tree Node And Highlight Corresponding Html?

Mar 11, 2010

I have a webbrowser control & a treeview control...once I load a website I create a HTML DOM tree representation of the website using the code below...What I want to do now, is the following:mouse over any HTML element, which will then select the corresponding tree node on the HTML DOM Tree select any tree node and have the corresponding HTML element highlight, with a red border around it?

Private Sub UpdateDOM(ByVal HTMLDocument As mshtml.IHTMLDocument3)
TreeView1.Nodes.Clear()
TreeView1.BeginUpdate()

[code].....

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VS 2005 TreeView ID - Select A Node From My Tree View

Mar 28, 2009

I want to select a node from my tree view, whatever I select is going to get a record from my database, I need a unique ID in each node so it will collect the correct document relating to the selected node.

How can I do this? the name of the node maybe used more than once? Each row in my database has an ID and Title, the title is the name I guess the ID being unique needs to be tied in somehow.

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Find And Highlight Tree Node?

Aug 23, 2010

i have a list of nodes (no child nodes) of movies im trying to implement a search facility by text heres a snipet i found online

Dim name As String = String.Empty
name = searchTextBox1.Text
Dim b As Boolean = True

[Code].....

my arr keeps coming in at 0. I have no idea why. I have tried messing around with different options but im coming up with nothing.

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.net - Right Click To Select A Node In A Treeview Control?

Aug 31, 2011

Why I right click on a node in my treeview the focus moves to this node and then immediately back to the previously selected node. Is there some way that I can allow the right click to select the node?

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VS 2008 Treeview Highlight Node On Itemdrag Over?

Jan 27, 2012

I am working on an an explorer form project where I have one treeview and one listview. I have all of my drag and drop functionality working as expected. However, I would like to highlight the treeview node the user is hovering over when draging items from one folder to another. This is the same functionality as windows provides in windows explorer.

Thus far I have been successful in changing the backcolor of the node using the dragover event. However, once I move away from the node, the backcolor does not change back to white. I have looked at the dragleave event but my code does not seem to work in reverse. how I can change the backcolor after moving away from a node?

Private Sub TreeView_DragOver(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TreeView.DragOver
Dim loc As Point = (CType(sender, TreeView)).PointToClient(New Point(e.X, e.Y))

[Code].....

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.net - Calling A Method When A Tree Node Is Clicked In The Standard ASP.NET 2.0 TreeView?

Apr 17, 2009

I have a treeview which i populate dynamically using an XML Datasource. The leaf nodes in the TreeView attempt to open a URL in an iframe within the page.This all works fine, but i would like the iframe to be hidden until the point the leaf node is selected.what event is triggered when the nodes are clicked?? I tried the SelectedNodeChanged event but this doesnt seem to get triggered!

UPDATE - The TreeView code is shown Below

<asp:TreeView ID="TreeView1" runat="server" OnSelectedNodeChanged="TreeView1_SelectedNodeChanged" DataSourceID="XmlDataSource2" AutoGenerateDataBindings="False">
<DataBindings>

[code]....

While fiddling with my code i noticed that when i remove the NavigateUrlField="URL" from my code the tree triggers the SelectedNodeChange event, But does not Trigger if NavigateUrlField="URL" is put back in.

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[2008] Programatically SELECT A Node During Load Of Tree View

Feb 3, 2009

I'm trying to programmatically select the first node loaded into a treeview.

There are 4 main branches - that each node is added to

'If ndeSelect Is Nothing Then ndeSelect = nde
Select Case cdr(1).ToString
Case "Translation"

[Code]....

I tried creating an NDESELECT object to "remember" the node - then tried the old boolean first/loop trick - but it's not remembering that SELECTEDNODE. Seems that the NDE object is just a node object - maybe not "smart" enough to know where it got loaded??

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Starting A Process - Select A Node In Tree And Then Pass The Path To The Associated Folder

May 20, 2009

I am working in VB2008. I don't know what process is started when a user double clicks on a folder to display its contents. I am working on an application where I store paths to various folders in a database that is displayed in a treeview. I would like to be able to select a node in my tree and then pass the path to the associated folder to the application which can display the contents of the folder. I need to know the name of the application or process that I am trying to startup to display my folder contents.

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VS 2008 - How To Select Node On TreeView

Feb 12, 2011

I'm Trying to select node on treeview with:
Try
Dim nodes As TreeNode() = TreeView1.Nodes.Find("Test", True)
Dim node As TreeNode
For Each node In nodes
TreeView1.Focus()
TreeView1.SelectedNode = node
Next
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
As you can see I'm trying to select the node "test" which is also sub-node. But I get no error nor a selected node.

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Forms :: TreeView - Any Way To Select Node With Right Click?

Nov 19, 2009

I have been working with VB 6.0 for years. I am converting an app that uses treeviews to VB.Net 2008. The way it use to work the tree grid started with a list of the drives on the system. Left click drilled down in the selected drive or directory. Right click would perform an action with the selected drive or directory. In VB.Net it appears you can only select with left click using the AFTERSELECT event. Is there a way to select a node with right click?

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Select A Default Node In A Treeview(dirDB)?

Jul 30, 2009

I would like to select a default node in a treeview(dirDB). That comes from a default drive selected in a combobox(drvDB) that selects files and puts them in a listbox(filDB) i haven't added anything to do that yet. at the moment i have this code:

If optMData.Checked Then
drvDB.SelectedValue() = "M:"
dirDB.SelectedNode.Text = Microsoft.VisualBasic.Left(CStr(drvDB.SelectedItem), 2) & "ase_wdata"
End If

I bet there is a function or a selectNode If kindof thing? i am totally looking over that can choose these. vb seems very good at putting things right infront of me and i just completely miss them..

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Treeview - Add New Node And Select Text For Editing

Jun 27, 2009

I want to add nodes that behave in a similar fashion as when you add new folders in windows explorer. i.e. right click > new folder > then the new folder is added and highlighted as New Folder so that as soon as the user types they are overwriting the folder name.

I can add a new node as a child node of the node I have selected and label it "New Node" but I can't figure out how to select the new node and have it highlighted so that when the user types, they are overwriting the "New Node" text.

I have tried this but it doesn't work.

Private Sub AddProjectToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddProjectToolStripMenuItem.Click
Me.trvProjects.SelectedNode.Nodes.Add("New Node")
Me.trvProjects.SelectedNode = trvProjects.Nodes("New Node")
Me.trvProjects.Focus()
End Sub

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VS 2005 TreeView Select Node And All Children

Jul 3, 2009

I have a TreeView populated with some nodes, and some of those nodes have children. Is it possible that when the node, or child is selected that the entire node including the children be selected? I still want to deal only with the value of the root node, but for the UI I want the root + children to be selected.

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VS 2010 Programmatically Select A Node In Treeview After Move?

Feb 5, 2012

I'm using the following sub routines to allow the user to move treeview nodes up/down:

Public Sub MoveNodeUp(ByVal Nod As TreeNode)
Try
If Not (Nod.PrevNode Is Nothing) Then
Nod.Parent.Nodes.Insert(Nod.Index - 1, CType(Nod.Clone, TreeNode))
Nod.Remove()

[Code]...

Is there a simple way to keep the moved node selected after the move?

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Forms :: Select TreeView Node By ListView Selected Item?

Mar 23, 2010

I have been playing with, and researching, this all day and can't figure it out. I have a Windows Explorer style form with a TreeView and a ListView. I've populated the TreeView with directories and when a node is selected, the ListView fills with the contents of the directory associated with that node. No problem there, but I want to be able to select a directory in the ListView and automatically select the associated node in the TreeView, just like it works in Windows Explorer. All the information I've found online tells me how to populate the ListView from the TreeView, but I haven't found any good examples of how to populate the TreeView from the ListView.

[Code]...

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Delete The Last Child Node From A Parent Node In A Tree View?

Dec 28, 2010

I have a tree view in my project with a parent node and with theoretically speaking infinite child nodes.

Now I want to delete the last child node from the tree view when the user presses a certain button. I thought I could do this trick with this code:

Private Sub Bundo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Bundo.Click
Try

[Code]....

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How To Disable A Node In Treeview Control

Oct 24, 2011

In my application i have a treeview. And i want to disable some nodes in the treeview.For example consider the below image...In this if i want to disable the "Supervisor Settings" node at run time, how can i do...? (i.e., either by index value or Text value)

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INSERT A Node Using The TreeView Control?

Dec 15, 2011

I have a TreeView control in VS 2010 that I need to be able to INSERT (not add) nodes to. I have stored a unique key in the TAG for each node and know how to find the value of the tag in the tree. However, I can't figure out how to INSERT a NEW node BEFORE or AFTER the node I have found with this tag.

For example, suppose I have the following tree . . .

Item 1
... Item 2
... Item 3
... Item 4

[Code].....

I need to be able to do this for any particlular level of the tree (not just the third level where Item 6 is located). Also, Item 6 could have CHILD NODES associated with it but I need to leave those child nodes assoicated with Item 6 and INSERT Item 6.1 below (or above) Item 6 at the same level as Item 6.

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Set Focus On A Node In A Treeview Control?

Dec 31, 2009

I have a treeview-control and a datagrid-control on my form. In my datagrid-control I have two columns with records that contain the the content of the parents and the childs of the treeview-control. On starting up my application, the treeview-control is filled with the records that we also see in the datagrid-control.

[Code]...

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TreeView Control - Selected Node Flickering?

Dec 23, 2010

The TreeView control in my application was working fine until i added *small* icons, now whenever i try to open a node the selected node and the one above flickers...

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Asp.net - Moving The ScrollBar To The Selected Node In A TreeView Control

Mar 19, 2010

I have a treeview control where I am dynamically selecting a node depending on user interaction. when a node is selected I want to be able to have the scrollbar go to the location of that selected node in the tree. The scrollbar is simply made by overflow:auto in the div tag where the treeview is located. Can someone give me some detailed code to accomplish this?

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Parent Level Root Node In A Treeview Control?

May 6, 2009

What node property tells you if the node in question in a TreeView is the Root Node (i.e. highest parent level)? I want to be able to test a node (True/False) in a node event procedure.

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Forms :: Node Displayed Multiple Times In Treeview Control?

Apr 2, 2009

I'm developing a windows application. I have a form in which there is a list box and a treeview control. My purpose is to fill treeview according to list item clicks. This is done using a pair of subroutines called ReloadPermissions and FillMenuItem:

Private Sub ReloadPermissions()
Dim p As New Permissions
Dim i As Integer
Dim it As TreeNode
Dim el As New List(Of String)

[Code]...

There are only two subroutines in which nodes are added to treeview control, and they are subroutines above. The problem is that whenever list item is clicked, node count displayed in treeview is increased!!! I checked number of nodes before and after call to tvPermissions.Nodes.Clear() using MsgBox. Results show that number of nodes isn't increased (1 before call, 0 after call, again 1 after ReloadPermissions() is called), but what is displayed doesn't show such a behavior! Refreshing window by putting it under other windows or call to tvPermissions.Refresh() has no effect.

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VS 2010 Treeview, Adding Child Node At Runtime To Design Time Parent Node?

Nov 26, 2011

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?

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Select A Node And Make Another Control Visible?

Apr 4, 2010

I want to select a node and make another control visible for that node using an if then statement. From what I read I think I have to put the code in the After_Select method. I gave each node its unique name and unique tag but can't figure out how to address a node name. basically want to click a node and make a panel visible associated with that node. tried something like "If me.treeview1.selectednode.nodePanel1 then pnl1.visible=true" but intelisense doesn't recognize any of the named nodes. can anyone give me some sample code.

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Looping Treeview Node It Alway Give Me The 1st Node?

Nov 12, 2009

i got treeview with some root, parent and leaf node but when i create a foreach loop it alway read the 1st value with is 4

For Each node As TreeNode In Me.TreeView1.Nodes
'Label1.Text += node.Text & "</br>"
If (Not node.Checked) AndAlso (node.Value = module_id) Then

[code].....

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Add A Child Node To Specific Node In Treeview?

Apr 1, 2012

How to add a child node to a specific node in treeview?

Say i have "Item1" in treeview already, How do i add "SubItem1" to "Item1" as it's child node?

I know its probably really simple, but i tried lots of stuff, i just cant get it working.

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Remove A Node From The Treeview Identifying It By The Node's Tag?

Apr 25, 2009

Is it possible to remove a node from the treeview identifying it by the node's tag? if so how?

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Allow Users To Select Their Own Grouping For A TreeView Control?

Jun 3, 2010

I am using a treeview to display projects, tasks, time entries, and the people who are working on a project. I would like to allow the user to define a custom grouping (ie. Project->Task->Time Entries or Project->Date (of time entry)->Task->TimeEntry).The relevant groups would be Project, Task, Time Entry, and Person, with some metadata from them. I want to have some modular way to allow a user to specify how they would like to display the information. Does anyone know of a good method by which this can be done? I currently have hard-coded a display which looks like this:

Project
Task
Time Entry

[code]....

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SpecialFolder To Node Tree

Aug 7, 2009

Everything is fine except the underlined code says-'Expression is of type 'System.Environment.SpecialFolder', which is not a collection type.'
All I want to do is add the node to the treeview. Let's say that I want "My Program" to be the node in the treeview, and THAT node is a folder inside my program files, which also has a folder inside of that which is called "Projects".[code]

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