When changing selecteditems (the items themselves, not which ones are selected) in a multiselect listbox, sometimes the operation does not happen and items are deselected. Here is a simple example of what I mean, just a form with a multiselect listbox.
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
ListBox1.Items.Add("item at index 0")
[code].....
i want to remove all selecteditems i tried to use this loop but it didn't work
Dim a As String
For Each a In History_Textbox.SelectedItems
History_Textbox.Items.Remove(a)
Next
How do i do it because that just didn't do anything
SEE MY ANSWER AT THE BOTTOM Just doing some light reading on WPF where I need to bind the selectedItems from a DataGrid but I am unable to come up with anything tangible. I just need the selected objects.
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I need to display the selecteditems in a label I am using VB 2005 I set the selection mode to multi-extended It did work selecting only one item with the following code:
me.xresultslabel.text= me.xlisttextbox.text.selectedItem.tostring
But when I tried to display more than one item using the following code:
me.resultlabel.text= me.xlisttextbox.text.selectedItems,
I get the following string on the label:
system.windows.forms.listbox+selectedobjetcollections.
I want set Listbox background to transparent but not working
View 3 Repliesint val = lstvRecordsCus.SelectedItems[0].SubItems[0];
The returned value is an int in a string datatype. I need the right hand side to return the value in int instead of string.
I tried Convert.ToInt32, it didn't work.
All the values that comes from SelectedItems[0].SubItems[0] is of type int.
I was testing to get the values from the ListView which works fine when double-clicking a row in the MouseDoubleClick_event, but in the SelectedIndexChange_event it crashes. I get an error that the value of "0" is not valid for the index.
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I have listview which populates with filenames. When an item is selected a label shows how many items are selected. This works ok. However, when clicking off an item (deselecting it) the label won't display 0. I have the code written in the mouseclick event of the list view;[code]
View 3 RepliesAs the title describes I tried to get the selected items and it returned an emtpy collection. The property only works once after that something goes wrong and it returns an emtpy collection. Does anyone know why? Or knows what I'm doing wrong?
View 6 RepliesI want to used ContextMenuStrip Right click to Get Listview.selectedItem 's text and Copy to clipboard
View 1 RepliesI have a function that fills a listbox with data from sql server 2000 database. Here is the code: (It's in a class)
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im trying to shell a file from a listbox by getting its name and then shelling this is my code
Private Sub ListBox1_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.DoubleClick
Shell("C:UsersNotandiDesktopSt�rikerfiFoldersGAMES" + ListBox1.SelectedItem.ToString)
End Sub
[code]I will want to include a combobox with some options of a. alltheseat b. Vacantseats., c. Reservedseats.My question is how do I write the code that when vacant seat is selected from the combobox it will list only the vacant seats in the listbox and when reservedseats is selected it will list only on the reserved seats.
View 11 Repliesi for my project what i am trying to do is:i have two listboxes and in between the two boxes i have two buttons. Btn1 is to send data from listbox1 to listbox 2 Btn2 is to send data from listbox2 to listbox1
below is my code could you please suggest improvements help me improve the method Private Sub m_buttonAddUserRole_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles m_buttonAddUserRole.Click
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I'm trying to make a application where the user can add a treenode to a treeview, and then after that they can add items to a listbox, making those items bound to that treenode? I need to do this for each node they create but I don't know how... I've been googling and reading tutorials on "DataSets", but it's always stuff about online databases
View 9 Repliesmy vb.net will not use listbox1.selecteditems it always comes up with a blue line underneath even though when i search online everyone is using this. my goal is to get the selected items and list them in a textbox
Protected Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim li As ListItem
For Each li In ListBox1.Items
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I'm very confusing about this code .When push Button1 ,the code not working
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Selected Case of a Listbox isn't working as expected
View 2 RepliesWorking with a listbox to send email and I have the ff code -
Dim EmailAddressFrom As String
EmailAddressTo = lstbxEmailAddress.SelectedValue.ToString()
MessageBox.Show("To Address is ", EmailAddressTo)
When I run this, in my message box, I get -
"System.Data.DatarowView" as the title of my message box "To Address is " And when hit F8 to continue debugging I get the ff error msg - "The specified string is not in the form required for an e-mail address."
i am new to dot net and i have a problem with this code below. what is expected is that the method should add the names in the string in random order into the listbox. but the output shows only single alphabets added rather than the whole name. i don't know where im wrong.can anyone correct me?
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
Dim fr(4) As String
[code]....
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Visible = False
ListBox1.IntegralHeight = True
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This code bellow to compile a single listBox on form1 to listBox on form2 then listBox on form3.
I want to modified this code to compile 169 of ListBoxs on form1 to 169 listboxs on form2
and 169 listBoxs on form3.Try this code,not need the new coding.
Original code from JoOl and modified by John Anthony oliver
[Code]...
1 when my listbox returns resaults it only brings back 10 how do I set it to return lets say 500
and question 2 is when I click on my links in listbox it's not opening webpage as I would expect it...
This is my code
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I found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)
<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....
It appears that my favorite thing in the world is tackling projects that are beyond my current knowledge and abilities. I have a little project that I am working on which is a simple image viewer stocked with (upon completion) your standard Load..., Next/Previous, Zoom In/Out, Actual Size, and Full Screen capabilities. However, I am running into a few snags:
(1) I've been able to get my "Load..." button to display a file dialog box, but I cannot seem to get a working filter (with which only image file types are allowed to be selected) in working order.
(2) I have a PictureBox object (entitled PictureBox1) that displays the image selected via the file dialog box, but it loads images in their full size (1:1/100% zoomed) state without scrollbars, etc. to allow me to navigate the loaded image. I would like to have it load the image, initially, to fit within the dimensions of PictureBox1 and from there be able to zoom in/out via my "Zoom In/Out" and "Actual Size" buttons and be able to scroll if the zoom level is beyond the dimensions of PictureBox1.
(3) It dawned on me that I haven't the faintest idea how to get my "Next/Previous" buttons to allow the user (me) to navigate, in succession, the images contained in the folder in which the currently loaded image is stored. [code]
If it is deemed that this thread is inappropriately requesting help, I ask that it be locked/deleted quickly as I recognize that this is a large community with many discussions going without need of unwelcome posts.
I am using VB.NET (version 2008). I have two types of items populating in a listbox (checked listbox). For example: lets say one is type "A" and other is "Type B". Their names maybe same so if the user sees those items in listbox then he won;t be able to determine their type until he click on them and checks out its properties. I wanted that I add each item to listbox and colour them so that blue for example means type "A" is there and red means the other. So this way I will be able to know at a glance that how many item of what type is present. I guess it may not be possible to do that in a standard checkedlistbox. I am also using component factory's krypton controls which enhance the gui of an application. But I dunno if I can progress using that.
View 5 RepliesThe scrollbar that comes with the ListBox is too small for touch screens, so I use my own scrollbar instead. But when you do this on various forms you end up repeating a lot of code. So my solution was to create a custom scollbar that has a property I can set to the control I want it to be a scrollbar for. In vb6, I can use the withevents keyword to get access to the control's events so that all the scrollbar related code can be in the custom scrollbar object I created, except...I had to create a refresh method for the consuming code to use to let the scrollbar know when the number of items changes. The scrollbar doesn't need to be told how many items there are because it has access to the control, but for a listbox there is no event to tie into when an item is added/removed so not 100% of the scrollbar related code could be encapsulated.
View 2 RepliesIs it possible to select an item in one listbox and then display the data of another listbox with the same indexed position? I am planning a project and this is something I would like to attempt but I haven't figured out how to do it.[code..]
I tried doing the above code but instead of displaying the listbox text the message box just returned false.
I am using Visual Basic 2008 Express Edition and I am trying to set a listbox so it starts to scroll when it hits the middle point of what is viewable on my list. I also want to set it so the list is always visible so you when you reach the bottom of the list you can scroll down to the bottom but if you scroll back up once it reaches that middle point it will start to scroll up again.
View 2 Repliesproblem that i am facing is i want to add array of object as a single item in listbox. in vb6 i was using this Label1.Caption = Label1.Caption & Mid$ (strInput, intI, 1) & " " List1.AddItem (Label1.Caption) i was using label. caption to store object but not work in vs2008 because label.text only take text and left other values
View 18 Replies