VS 2008 Treeview Control Doesn't Show Images?
Oct 25, 2009
I am trying to setup a treeview control to display all drives and folders on the PC. So far I can display all drives and folders but the images will not show except rarely. I am using an imagelist with 4 images (index 0-3). The code below is used to load the drives in the treeview control. I have tried using every type of image possible from bmp to png and nothing. I have tried the Appllication.EnableVisualStyles() which I now know isn't needed in vs 2008. I am also having problems with a picturebox in another form that shows nothing but a shadow of the image. I suspect this may be a setting somewhere maybe in vs 2008 but am not able to find one.
Treeview
Dim drive As Integer = 0, dir As Integer = 0
For drive = 0 To oDrives.Length - 1
[code]....
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Nov 12, 2010
Why images of asp.net toggle button created with checkbox doesn't show inside updatepanel in webusercontrol ?
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Jun 3, 2010
I am attempting to show a specific form using a treeview control, the nodes of which have their tag value set to an instance of the Form I need to show. The code I have in the DoubleClick event works great for the first time I show a form, but after that I get an object disposed exception. As you can see, I tried handling it by resetting the tag, but that didn't work. Is there any way I can show the form more than once without going through a switch statement anytime the exception comes up and resetting the tag to the right type of form? I'd like something nicer looking like the way I show the form.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim fm2 As New Form2()
Dim fm3 As New Form3()
TreeView1.Nodes(0).Tag = fm2
[Code] .....
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Jul 6, 2009
I have a webbrowser control and the following code is in a for next loop. If I use wba = New WebBrowser the code works in the background and I don't see the loaded pages in the webbrowser control. My question is how can I see the results in webbrowser component with wba=New WebBrowser ?
wba = New WebBrowser
AddHandler wba.DocumentCompleted, AddressOf wb_DocumentCompleted
TheLoginUrl = Items(2) & "/test.php"
wba.Navigate(New Uri(TheLoginUrl))
results.Text &= "Login to: " & Items(2) & vbNewLine
[Code]...
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Jul 18, 2009
i'm making an app which uses a webbrowser control to show some offline (not cache) html pages like a slide show. let's say pages in a folder on the desktop etc when it came to testing the whole thing, i figured out that the images in the html are not visible on the webbrowser control. instead there is a space where the image should be, corresponding the actual image dimensions.and when i right click on this empty space where images should be, and click on properties, i see the image size given as -1 byte (minus 1 byte) and there is no image type.
however given any online url's to the same webbrowser control or opening the same html pages with the real internet explorer i got no problem and see the images.i've been googling for almost 10 hours for a solution without success, so any hints are welcome. used vb 2008, .net framework 3.5, ie 7.
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Mar 27, 2011
I'm working with VB2008 and I was wondering how to get the treeview to show the relative, relationship, key ect....vb6 Example
Treeview.Nodes.Add Relative, Relationship, Key, Text, Image, SelectedImage
I would like to be able to use the treeview this way but if there is another way can someone let me know, I have searched the net and have looked in a few books and cannot figure this out.
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Sep 12, 2009
I have a treeview control on my form, i am trying to load an xml into the treeview to show cities/states (example at the bottom of the page)The xml that treeview is loading from looks like:
vb.net
<?xml version="1.0" encoding="utf-8" ?>
<Locations>
<Group name="US States">
[code]....
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Apr 1, 2010
I have a web browser on the form, kids can use it to browse sites. sometimes, on some sites, I want to filter some images (or just show some images), is it possible to do this? or, have to go low level to filter images?
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Feb 4, 2012
When i create a windows form in VB, i want to have a picture box on my form, but in design view it shows the box, but when you run the program it doesn't show it. I want it to show the box so when you run the program it will show the box and you can click on the box and you can add the photo you want on your form and then print the form or save it.
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Feb 11, 2011
I am using the DownloadDataAysnc. But the ProgressChanged event doesn't show progress until after the data has been downloaded.Even when I try and download a data which is contained in a big file. The programs remains responsive so I know it is doing something.However, it is when the progress has completed that the progressChanged event fires.I known this as the progressChanged and the DownloadDataCompleted fire immediately after each other. However, they should be a pause as the file is quite big.This is the code snippet I am currently using. And the output below
Results:
Progress changed Version userstate: [ Version1 ]
progressBar1.Value [ 100 ]
[code].....
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Jan 19, 2012
I have a dictionary (literally) database file in Access: its Fields are Headword (string) and Definition (Memo, it's in Rich Text). The Rich text looks fine in Access, but when I connect a Visual Basic (2008) Datagridview control to the database, the text looks like HTML, not RTF, and when I try to copy a specified "definition" into a RichtextBox, I get the same weird symbols, not RTF. One attached snapshot is how a record looks in Access, the other in a VB 2008 form with a datagridview control and an attempt to paste contents into a RichTextBox.
How can I get that same "look" from the RTF in the original Access file? I'm only recently moving from VB6; not a professional
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Jan 13, 2011
Private Declare Function GetAsyncKeyState Lib "user32" Alias "GetAsyncKeyState" (ByVal vKey As System.Windows.Forms.Keys) As Short
[Code]...
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Jun 29, 2010
I have a form that has several controls, most of them are textboxs. All controls are binded to a bindingsource. The controls that always have values, they are displayed correctly, but the others ones that have null values in the data source, the default null value doesn't show up. This problem it's driving me crazy... There must be something that i'm missing. Some of the code that i had used with no luck:
[Code]...
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May 14, 2011
I have a problems with my application..
1. collapse and expand treeview when i click plus sign (+) on treeview, treeview didn't expand subfolder but when i click image, treeview expand it.
2. showing path that i check on treeview when i check the treeview then i'm click the button, then return path that i check
This is my code..
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Aug 8, 2010
I need help with images for a toolbar control for vb 2008. I think I remember there was a way of creating them with VS6 in the C++ department. Maybe not. I would be happy to use them off the web but I can't find a link. Or maybe we have some in Visual Studio in some uncommon folder?
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Feb 27, 2009
It was there in VB 6. I have some images that I'm going to use a buttons, and I did this in VB 6 with the image control. however, this control doesn't appear to exist in VB.NET 2008 Express. I guess I could use a picture box, but isn't that overkill for such a simple task?
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Jun 21, 2010
have a treeview with 13 different categories. Under each category are many sub-categories.At the minute the icons used to represent the categories are the plus/minus signs.I would like to use an Imagelist to change the icons to a closed folder icon when closed and an open folder icon when opened.
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May 9, 2009
I've added 48*48 size icons to my application's treeview but they look s**t. With the default font settings what size images should I be using?
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Jul 1, 2011
how can we add images in treeview using vb.net. Different images in different conditions .
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May 14, 2010
I'm trying to accomplish something similar to:[URL]...However, I find the author's approach to be a bit cumbersome and "hackish" when I know this may be doable from within the application or at runtime.
I am populating a TreeView with a list of cameras. Depending on certain properties of the cameras, I'd like to add certain images to that camera's node.The obvious limitation is a single image per node by default.
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Nov 8, 2010
Can anyone tell me what is wrong with this code? It looks OK to me but the GetImage function returns the same image irrespective of the filename passed to it (the one corresponding with Id=2 which is the second one found) [code]
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Jun 9, 2010
I'm in need of a custom control that will allow me to do something like the attached image. It's basically a TreeView with the exception of having a row of PictureBoxes for each child node. I'd be happy with a ListView that could do this even. I tried it briefly with a DataGridView with ImageColumns but the "look" wasn't quite what I was after. I'd like the "Parent Node" text to be situated above the row of images and just can't seem to find a control that will allow this.
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Jan 9, 2012
I am trying to insert spaces between Images and check boxes on a treeview node, in a windows form app i.e. checkbox (spaces) image (spaces) node text rather than default format checkbox Image node text
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Jul 26, 2009
i've download the 101 Visual Basic and C# Code Samples from downloads/details.aspx?familyid=08E3D5F8-033D-420B-A3B1-3074505C03F3&displaylang=en i was going to learn "VB.NET - Data Access - Read and Write Images from a Database" from that 101. the program is written in 2003 the conversion of the problem to 2005 and 2008 failed.
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May 31, 2009
is it possible to show the structure of a class in a treeview? if yes how
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Jun 7, 2011
I wanna show a form when clicking on a node of treeview
for example when clicking on node 0 i wanna show a form like the treeview in ASP.NET(every node return us to a specific URL) and i have many nodes with children
I didnt find what i want when looking for that in the web.
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Sep 29, 2011
I have the following code for a treeview, It only shows a +sign against some folders, mostly system folders but not others, a mod to this code to show all childs, irrespective of how many levels the child folders exist?
Dim basenode As System.Windows.Forms.TreeNode
If IO.Directory.Exists(path) Then
If path.Length <= 3 Then
[code]....
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Jan 11, 2010
show the files in the particular folder using treeview but i dont have icons for all files windows select the icons for particular files can i select in the same way
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Feb 1, 2012
I have a requirement for a new application development where I must present some information to the user for selection via drag and drop. VB offers the TreeView control which would work nice, however the user does not like the Treeview control's presentation. The user wants a control that work similar to the Mac's Finder control while in column view.
Apple's Mac Finder Control works similar to window's treeview. Finder has a nifty view capability that my users would like in some new development that is being done. The finder supports a "column" view. Similar to the treeview, it starts out in a root list. The difference being, when a user makes a selection and clicks on a node, the node doesn't expand, the sub nodes appear on the pane to the right of the list. Clicking on a sub node, will cause the pane to split again and the items within that sub node appear
to the right again.
This will happen again and again with the left pane getting narrower as the user drives deeper into the sub nodes. That is what I am trying to replicate. Obviously, once the user reaches the base list of items, we have to support drag and drop capability. Does anyone know of a control for VB.NET that work similar to the Mac's Finder control?
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Apr 9, 2012
I've seemed to found some interesting behavior with the stock MonthCalendar control. I've set the MinDate property to 1/1/1990 but when I try to actually select a date anywhere previous to 1/1/2000 it jumps to 12/31/2999 why is that?
I've tries manually setting it to 4/8/1998 and it jumps to 4/8/2998 which isn't what I would expect a calendar control to do. Is there a reason it keeps it within the 21st century?
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