Forms :: TreeNode Value Property Missing
Mar 9, 2009
It 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?
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Feb 22, 2011
I 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]...
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Mar 5, 2012
When I add a new, empty form to my VB.NET VS9 project, the linenherits System.Windows.Forms.Formis missing.What am I doing wrong here?I thought it would be added automatically.I experienced that some thing get weird if this line is not there (Form_Load is not firing, I think).
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Aug 31, 2010
So I'm want Form1 to not be moveable. I've read that all you need to do is set the Moveable property of the form to False, but for some reason, I can't find it in the list where it should be between MinimumSize and Opacity. Or other simple ways I could make Form1 unable to be moved?
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Aug 4, 2010
The visible property has gone missing from properties. It still appears when your clicked on a textbox or label etc, just not when u have the form selected. Also doing it by code is not working e.g. form1.visible = false. Does anyone know what may have happened and/or how to get it back.
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Jan 17, 2011
[Code]...
there is one problem here the root node on the line "GetDirectories(info.GetDirectories(0, rootNode))" here is the error "Error 1 Value of type 'System.Windows.Forms.TreeNode' cannot be converted to 'System.IO.SearchOption'."
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May 6, 2011
I have a project which still runs fine without issue however i dont seem to be able to access the design view of Form1. The icon in soultions explorer has also changed from a form to a sinple vb reference. Im unable to right click in solutions explorer and view designer as there is no option there.
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Jun 4, 2011
.NET developing and have a simple question, i've been stuck on this for a while and searched many forums first with no solution so i'm posting myself. In VB for excel i've used Screenupdating=false to disable the screen updating however now i'm creating a visual studio 2010 windows forms application and its not showing up as a property. Here's the code i've tried.
[Code]...
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Jun 25, 2009
I place a Background Image on my main form to a BMP file, On-top of the Background I have buttons, and Labels. When I execute the code, the labels (which are supposed to be WHITE) along with the text on the buttons is see-through, I can't get it to stay WHITE and not display whatever is behind the form. here is the examples I have, this is what it's SUPPOSED to look like: http:[url].....
This is what it DOES look like: http:[url].....
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Dec 14, 2009
Does anybody use the Tag property of controls & forms? If so, what for?
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Sep 11, 2011
Is there a way to limit the topmost property? I have two forms and I only want to one form form topmost to only one form. I don't want it to be topmost to all of the windows in my computer.
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Aug 27, 2011
This relates to vb.net on vs2008 I have a form (in actual fact many forms) in which the fields are bound to the public properties of class I have created. For example let say it is a customer class object oCustomer of type clsCustomer.
In the Set section of property declaration I use the NotifyPropertyChanged("propertyname") command like this
[Code]...
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Jun 2, 2011
So i'm trying to add a tooltip to a treenode, But with no luck. I've tried things like: Treeview.nodes(0).tooltiptext = "Hello"
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Jan 18, 2010
I'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?
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Dec 1, 2011
I 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].....
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Jan 28, 2012
I'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]...
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Sep 1, 2011
I 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.
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Dec 5, 2009
I seem to be having a problem binding the visibility property of a textbox to a database value using the advanced binding property.
I found this article (BUG: Inconsistent behavior when you bind the Visible property of a Windows Form control to a Boolean field) stating there is a bug in some older versions of the .net framework.
Does anyone know if this has been fixed in 4.0?
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Jul 22, 2011
Is there any predefined property by which I can set the DisplayFormat/DisplayStyle of a textbox? Suppose I want a textbox to hold the actual value 888888888888.88 and show it formatted as 888,888,888,888.88. In short it should hold 'Double' data type value and show it with thousand separators and decimal places upto two digits. If text is cleared from the textbox, it should have 0 as value and 0.00 as displayed value.
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Apr 7, 2010
I am working on a project that uses lots of custom class objects.Before starting work on real project, I tested the object behaviour on a temporary project. And find that if i add the object to a list and combobox and then make any change to the object property then it reflects in list and combobox.But after using the same process in real project the change does not reflect. Why?Also, how can i update object property placed in the combobox.
for eg.
Class X has property id and name
created objX of type Class X and set id=1 and name='All'
[code].....
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Oct 19, 2009
I use drag'n'drop from a datagridview to a panel. The panel holds an array of objects (think rows) so that the items from the datagridview can be dragged to the different objects. I use the y-index from the top of the panel to define what object the item is dragged onto.This works great as long as the object is visible from the start. However, if I scroll down to an object and then drag the item from the dgv, it gets released on the wrong object, as the y-index doesn't take into account the number of pixels I scrolled down. So, what I need is (if it exists) the scroll offset property for the panel, i.e., the number of pixels that I scrolled down. (Then I can add this offset integer to the y coordinate on which the user drops his/her object.)
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May 14, 2009
I would like to have a form class that is called from a button on a parent form and would like a button on the child form to set a property on the parent form. Can anyone explain the best way to go about this or direct me to a good article?
[Code]...
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Apr 20, 2011
I have been searching for an easier way to validate the text property of my combobox.
Below is a background of what I am try to accomplish:
I have a from that contains many controls, mainly comboboxes that are bound to datatables. I have these set up in such a fashion as to when the user begins to type, the values begin to show and auto populate the combobox. This makes the selection process easier to select an actual value in the list. But, as we all know, you can lead a horse to water but you can't make him drink. Users still have the ability to type something that is not in the list. I do not want to allow them to leave the combobox until the have selected or typed a valid value from the list because I am building a SQL query to retrieve data for a later form. I don't want to lose the above mentioned functionality of being able to type it in. I currently have it working as follows, but there must be a more elegant way to do this.
I first populate my combo box like so:
CODE:
The part I don't like the most is that I feel like I should be able to use the list already loaded in the combobox data, but I can't figure out how to do it. So I end up having to reload it, this seem like a waste of time.
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Jun 24, 2010
I'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]...
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Feb 17, 2009
I 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
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Oct 31, 2011
I 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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Aug 3, 2010
I 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
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Jun 24, 2010
I 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] .....
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Mar 26, 2011
how to add a panel control as a treenode in a Winform treeview control
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Oct 4, 2006
Is there way to Disable TreeNode Like .Enabled = False..I need this so no one can change the CheckBox checked state
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