.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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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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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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Sep 26, 2011
Right now I have a treeview with 2 parent nodes and each Parent Node has multiple child nodes.I would like to display the text of the Child Node in a textbox. Which I have been unsuccessful.The code I'm displaying below shows both parent and child node. But I only want the child node.
[Code]...
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May 14, 2009
How do i code it to enable me when ever i go into this form. when one of the node of the treeview is clicked. It redirects me to another form.
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Aug 23, 2010
How do i tell which node in a TreeView was clicked in a Context Sensitive Menu call?
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Mar 29, 2009
How can I work on a treeview to preform a task on the event that a node it clicked?
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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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Aug 30, 2009
Hi, i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated.This is the code im using right now:
Private Sub TreeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
Select Case e.Node.Index
Case 0
[code]....
Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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Feb 28, 2009
i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated. [code] Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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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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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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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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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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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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Aug 2, 2009
how I can add a tree node with 2 lines of text, OR how to add a non-collapsable childnode to an existing child node. Basically my treeview consist of a list of groups, and inside each group is the contacts that belong to that group. Im trying to append a line of text to the existing contact when their status changes to busy, or not available.
example
// Current Contact List //
+ MyFriends
Timmy
Frank
Bob
What happens when I try to add the child node to the existing child node is it gives me the + sign so it can be collasped! I want the child node to be visible at all times. So it looks like this
// Contact List //
+ MyFriends
Timmy
[code]....
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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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Apr 4, 2012
Is it possible and if so, how does one go about doing such a thing. I am loading a network directory in a treeview. Can the parent node be disabled, meaning it can't be selected, it's available for viewing only, but leave the child nodes selectable?
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Dec 21, 2009
how to rename node in an tree view?
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Nov 5, 2009
In my Form I have the Tree View in which I want to Add the Node during the Run time.
For that I used a Context Menu Strip and on the Click of the Pop menu I added the new Node.
but my problem is my newly added is not editable by default
but instead I need to select the newly added node and after selecting the node I again need to click the Record to Edit it.
So is there any way that newly added node will be added Editable?
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Nov 4, 2011
suppose i have a tree that have a root node. that root node have 3 child nodes. each child node have 3 child nodes and so on say up to level 4. if i number each node from the root node and numbering from left to right, the root node being number 1 and the left child of the root being number 2, the middle child of the root being number 3 and the right being number 3. on the third level the left child node of the left child node of the root being number 5 and so on. if i have numbers 1 up to 13 and want to put each number into a node numbered the same i.e number 1 gets into the root node, number 2 gets into the left child node of the root and so on. how would i achieve that.
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Dec 24, 2009
Well I have a Tree View With 2 Main Nodes
Offline
Online
i have a for each statement that goes thru all the nodes in the tree and checks a value BUT heres ware the issues starts I when it gets the value if depending on the value i want to move it as a child to one of the 2 parent nodes
heres the code i have
vb
Dim sep As TreeNode
For Each sep In TreeView1.Nodes
Dim conn As MySqlConnection
[Code].....
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Nov 18, 2011
Who knows, how can I expand last parent nodes in a tree view with visual basic 2010
for first node we can use TopNode but what about last node or other nodes?[code]...
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Sep 10, 2009
Here is the code that I am using in my treeview class in VB .NET 2005. I want to generate a context menu based on the current position in the tree where the user has 'right-clicked'. For this, I need to know where the user has performed a 'right-click'.
Here is the code -->
Private Sub tvHome_RightClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs)
If (e.Button = Windows.Forms.MouseButtons.Right) Then
[Code]....
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Mar 25, 2010
how can I search for a text in a tree view but by being able to tell from which level I want to start searching?
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Dec 31, 2010
I have a list of my menu strip in a table with columns
1.SlNo
2.Menu Name
3.Menu Parent No (SlNo of Parent Menuname)
I need to load this menulist from table to a tree view. As if they are in the Menu Strip. That is Sub Menus Should Come under Appropriate Main Menu upto 4 levels of sub menu i use.
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Mar 6, 2010
I created a tree view and I would like to know if (and how) I can add to a given node a datatable (displayed in a datagridview) with a click on the same node. Let me know if my question is not well described.
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Jan 23, 2012
example how to create a right click on selected node in tree view..example
parentNode = mdiform
childnode1 = child form1
childnode2 = chile form2
which ever i select a different node a corresponding form will appear with a mouseup event.
i must choose first a node to view my contextmenu.
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Aug 8, 2011
I m making a "offline viewer" which uses saved webpages. I'm using a web browser and a tree-viewer. Is there a way to make the selected node in the tree viewer change if you click on a link in the web page (i.e if you select a link about The Gimp on tutorial 176, the selected node will change to The Gimp tree node)
I know about the code for changing the tree node selection, however what I'm having trouble with the web-browser side of it.
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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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