Find A Treenode Children?
Oct 31, 2011I start with VB 2010 since a short time.I need to check in a Treeview if a node has children or not.In VB 6 there was the property clildren that allow to understand this.
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Impossible To Find TreeNode Text
Jul 2, 2009So I have a TreeView that starts off empty. Sequence of events is as follows:
Add a new root node. Code makes the label edit box pop up immediately, and I give it a name.
Add a new subnode to that root node.
Add a new root node, after the first one. The label edit box pops up, and I give it a name.
The second root node takes on its new name, but so does the subnode added in step #2. Now, it's not really the subnode's text; if I examine that TreeNode in the debugger, it has the proper text for a subnode. But that text that was entered into the root node sticks around through expanding and collapsing its parent node, until something else happens and I need to rebuild the tree.
I'm building the tree in kind of an odd way - removing all root nodes from the parent, all child nodes from the root, updating all the tags and text, creating new nodes, then re-adding the nodes to their parents - but I've checked, and the proper text is being associated with the proper node. The TreeNode that is showing the wrong text has only ever modeled the one object, never had anything else in its Text property, and has its text set back to the right value ("untitled action") right before being re-added to its parent node.
All I can think of for a culprit is the code for the label editing box, which is based on an MSDN sample:
Private Sub EditSelectedCategoryName()
If Not ActionList.SelectedNode.IsEditing Then
ActionList.LabelEdit = True
ActionList.SelectedNode.BeginEdit()
[Code] .....
EditSelectedCategoryName is called by a context menu item's Click event, right after the new root node is added and made the selected node. The DisplayName setter in the AfterLabelEdit event handler is what triggers another chain of events that rebuilds the tree. So am I screwing up some internal structure of the TreeView by altering its contents in the AfterLabelEdit event?
Add A Tooltip To A Treenode?
Jun 2, 2011So i'm trying to add a tooltip to a treenode, But with no luck. I've tried things like: Treeview.nodes(0).tooltiptext = "Hello"
View 2 RepliesAdd A Treenode To A Listbox?
Jan 18, 2010I'm trying to add a treenode to a listbox... say the TreeNode is named "Blue", when I add it to the listbox with Listbox.Items.Instert the output it gives me is "TreeNode: Blue"... How do I do this without having it bind the "TreeNode:" part to the output?
View 10 RepliesSet And Run Treenode Tag Properties In Xml?
Dec 1, 2011I am able to populate treeview from xml.
But now i am going to place the tag propeties at each node. And the tag content will be file path.
My code to generate from xml is as below:
Private Sub Frm_Load(sender As Object, e As System.EventArgs) Handles Me.Load
Dim file_name2 As String = "C:UsersDesktopEngineering.xml"
[Code].....
Using A Dictionary In A TreeNode Tag ?
Jan 28, 2012I'm writing a bit of code that I want to populate a TreeView, which it does quite successfully, but I also want to put a Dictionary in the Tag of each Level 1 child node. Once the Tag has been set to the Dictionary, is there any way I can modify the dictionary, without redeclaring the Tag.For Each verse In Verses
Dim _verse = verse.ToString.Trim
Dim _node As TreeNode = New TreeNode(_verse.Split(vbNewLine).First & "...")
_node.ToolTipText = _verse[code]...
Way To Get Selected TreeNode
Sep 1, 2011I need to grab the TreeNode that's selected when someone right-clicks on it. The TreeView.selectedNode() returns the top-most node, and disregards the child nodes.
View 1 RepliesCreate, And Use An Inherited Treenode?
Jun 24, 2010I'm confused regarding the MS examples for inheriting a treenode. I have created the following class to allow an addtion description field on the treenode:-
[Code]...
DnD Treenode To ListBox And Back?
Feb 17, 2009I have some code that allows me to drag a treenode into a listbox and then drag it back into the treeview as needed. When I drag a node out of the treeview, the node is removed from the treeview. When I drag it back, I need the node to be inserted into the same parent node/position it came from. I think I can save the node's FullPath property before removing it from the tree, then decipher it again when I re-add it but am looking for a cleaner way
View 2 RepliesGet Treenode Bounds In A Treeview?
Aug 3, 2010I know the node how can i get the bounds as a rectangle for a particular node on a treeview?
If it is not displayed i want nothing to be returned
Populating Another TreeView From Treenode?
Jun 24, 2010I built a treenode to be populated from my network drives, from this treeview I would like to populate another treeview to show the files when the first one is selected. For example, if the user were to click on the c:TestFolder then the second treeview would show the TestFolder, all sub folders and files.
Below is my code:
Imports System
Imports System.IO
Public Class F_Treeview_Demo
Public IsSomethingChecked As Boolean = False
Private fbIgnoreClick As Boolean = False
[Code] .....
Treeview Add Panel As Treenode?
Mar 26, 2011how to add a panel control as a treenode in a Winform treeview control
View 8 RepliesWay To Disable TreeNode Like .Enabled
Oct 4, 2006Is there way to Disable TreeNode Like .Enabled = False..I need this so no one can change the CheckBox checked state
View 7 RepliesAsp.net - Add Buttons With Events To A Custom TreeNode?
Dec 22, 2009I extended treeview, treenode, and nodetype so I could have custom nodes. Certain nodes have image buttons on them allowing them to add a child node or delete the node. I can't handle any of the events from my buttons.Public Class ContentTreeView Inherits TreeView Public Event OnAddChild(ByVal sender As Object, ByVal e As EventArgs) Public Event OnDelete(ByVal sender As Object, ByVal e As EventArgs)
[Code]...
Display SUM Of A Selected Treenode In Label?
Dec 13, 2009I have a tree view with a parent node. parent node will have 2 or more child nodes and the nodes data will come from a access database table. if I select any one of the child node with the mouse it will display the SUM of the child node's data in a label control below the tree view control. the access datable table might look like this [code]...
View 1 RepliesDynamic Add Treenode And Filepath In Form In VB?
Nov 24, 2011I want to do a form that can let user manual add in or delete tree node.When they add in, they can set the name and file path.Then it will store in oracle database.Each time my form run it will go through my database then execute all node from there.
View 10 RepliesDynamic Add Treenode And Filepath In Form?
Feb 16, 2011I dunno this can work or not..I want to do a form that can let user manual add in or delete tree node.When they add in, they can set the name and file path.
View 1 RepliesForms :: TreeNode Value Property Missing
Mar 9, 2009It seems that Visual Studio is using a older verion of the System.Windows.Forms DLL.
When I instantiate a instance of the TreeNode object it doesn't have the "value" property. Right now my version of Sytem.Windows.Forms is listed as 2.0.0.0 and it's being pulled from the Microsoft.NETFrameworkv2.0.50727 folder.
I've installed all of the current .NET framework service packs....
Is there something else that I need to do so that the I load the most current version of this object?
Highlight TreeNode And Display All Of Its Child
Jan 24, 2010I'm trying to make it to where when I highlight a TreeNode, it displays the every one of it's ChildNode.Text into a Textbox, but if the highlighted node has no children, it simply displays the Node.Text of the node that is highlighted into the TextBox...
Here's an easier explanation just in case:
Dim ParentNode As TreeNode = TreeView.Nodes.Add("Parent")
Dim ChildNode As TreeNode = ParentNode.Nodes.Add("Child")
If ANodeIsClicked Then
If TheClickedNode = HasChildNodes Then
Textbox1.Text = ClickedNode.Children.Text
Else If TheClickedNode = HasNoChildren Then
Textbox1.Text = ClickedNode.Text
End If
End If
End If
Recursive Function With Dynamic Treenode
Aug 16, 2011I have a recursive function wich objective is scan an structure and represent that structure with treenodes. Inside my function depends the structure I'll have to create another treenode inside my treenode or just create a node. My problem is that I don't know how to remember my treenode position when I have to call my function again.
If strTop.TextString.ToUpper = "DMN" Then
gcTreeno.Nodes.Add("Node")
Else
Dim perf As New TreeNode
gcTreeno.Nodes.Add(perf)
End If
if i would like to write next time a node into perf, how i could do it?
Treenode Duplicate When Expanded From Collapse
Jul 1, 2010Items in the child node seem to replicate themselves everytime when expanded from a collapsed state. I think the problem is that the memory needs to be cleared before I expand.[code]...
View 1 RepliesVS 2008 Selected TreeNode Location (X,Y)?
Mar 10, 2010I want to have a small control follow the selected tree node. However, I cannot find a way to get the location of the selected node (in relation to the tree control itselfI know I could use the mouse pointer location, but I wanted the control to 'snap' to near the selected node by using its exact visible location.
View 2 RepliesDisplay SUM Of A Selected Treenode In A Label Control?
Mar 31, 2009I want to do like the picture. Select a child node and it displays the sum of the titleid associated with it in a Label Control. I add my project here so that you can take a look at, what I am trying to do.
View 4 RepliesModify The Label (Text Property) Or A TreeNode In .NET?
Feb 22, 2011I have a TreeView with a bunch of nodes. I have some code that is supposed to modify the label, however it has no effect. When i step through it in the debugger, I see that the the .Text property has the correct value, but it is not reflected in the GUI. I'm not sure what I'm doing wrong. Here's the code:
[Code]...
Set The Height Of Treenode Of Which Font Bold Is Applied
Aug 18, 2010I have treeview in which for some of the treenodes I have to set the font selected by user. The font gets applied correctly, but the text is not displayed properly. Need to set the height of treenode. I'm using vb.net and VS 2008. I have already checked the Bounds property, but it is not set correctly so I cannot set the ItemHeight property of the node.
View 2 RepliesSwitch Positions Of StateImage And IndexImage For TreeNode
Jan 17, 2012I would like to know if it is possible to switch the position of a StateImage with that of an IndexImage for a TreeNode in a Winforms TreeView? Please refer to the image below for an illustration. The first TreeNode has a stateImage and the second one doesn't. My aim is for all IndexImages to align to the left and the StateImage (if any) to be to the right of the IndexImage. The resulting tree would look something like: I think I have to set the tree DrawMode to OwnerDraw and override OnPaint. I read this msdn link but nothing there was said about drawing images.
View 1 RepliesTreeNode Always Expanded - Preventing Nodes From Being Collapsed?
Mar 10, 2009I'd like my TreeView's nodes to always be expanded. Is there an elegant way of preventing nodes from being collapsed?
View 4 RepliesTreeView Binding Strategy; TreeNode Casting?
Jun 15, 2010I'm trying to bind a WinForms TreeView control to some user-defined objects. In particular, I'd like to bind aTreeNode.Text property to myObject.Name. My strategy is to create xTreeNode, a subclass of TreeNode, add a DataBindings collection, and expose its Text property.
This would allow me to write some code like this:
Dim oBinding as Binding
Dim bs as New BindingSource
bs.DataSource = myObj
[code]....
VS 2008 Custom Treenode At Design Time
Dec 22, 2010I'm currently working on a treeview but want to add custom nodes at design time, is this possible?Also the treeview is part of a control, so i have created a control designer and added a custom design time form to add my custom nodes, but can't seem to get the nodes into the treeview in design time, and serialize into the form automatically?All my custom tree node is is an extra integer at the minute, but more properties will be added later if I can get this working.
View 6 RepliesVS 2008 Left Click Deselects Treenode?
Aug 11, 2009I am using the following code to deselect a node:
vb
Private Sub tvwBlueprints_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles tvwBlueprints.MouseClick Dim node As
[code].....