Im trying to get the Text of a Item that is in a listbox. I basically want to use
MsgBox(ListBox1.SelectedIndex.ToString)
But instead of getting me an integer, I want it to give me the Text of the selected Index/Item
In the event of SelectedIndexChanged() I need to updated text of an item that is highlighted. If I remove it and .SetSelected again, this event will be entered repeatly. So how to update the text of this item in this event without deselecting and re-selecting it?
View 10 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 RepliesI have 2 listboxes on my form.Listbox 1 - populated with "available" field namesListbox 2 - populated with "selected" field names.There cannot be the same field name in both listboxes - it's either one of the other.The logic I was going to apply was to populate Listbox 1 with every field name ... and then as I populated Listbox with the field names which the user has already selected, remove the corresponding item from Listbox 1.
View 8 RepliesI cannot figure out how to add an item to a listbox with a specific value. I am able to add a text description without any problems, but how can I give it a specific value?
View 13 RepliesIn simple terms, I want to compare the value of a databound listbox display member with another string. However; I need to convert the listbox databound items to an array first as I may have to do 1,000's of comparisons on this.
I have a databound listbox from a sql server table that populates fine. I'm trying to retrieve the display value of a listbox item without selecting the item. My goal is to compare items in listbox1 with items in listbox2 and if item is in listbox1 matches an item I want to load into Listbox2, then I do not add the item to Listbox2. Listbox 2 is not databound but contents I'm loading come from a datatable.
So, I iterate through the items in listbox2's datatable but as I'm adding the items from the datatable to the listbox2, I check if the item exists in listbox1. The data that is being compared is the Displaymember of Listbox1 and a string value I want to manually load into listbox2.[code]....
l am trying to do this listbox1.selected item.text =textbox1.text.l am using vb.net 2010 , that syntax doesn't work.l just want to be able to change an item text in a listbox using a textbox.
View 4 RepliesIm trying to remove a certain bit of text from my listbox item..
heres my code..
If ListBox1.Text.Contains(".zip") Then
ListBox1.Text = ListBox1.Text.Remove(".zip")
End If
and when i start it and it tries to remove it, it comes up with an error saying
Conversion from string ".zip" to type 'Integer' is not valid.
ive tried, this code..
If ListBox1.Text.Contains(".zip") Then
ListBox1.Text.Remove(".zip")
End If
I have a listbox that contains a bunch of email addresses from a SQL database.I have some code that I use to send an email with some values from my app.How can I loop through my list box and grab the email address to use as my mail.to.add(emailaddress) string I have this and it loops twice because Thats how many addresses I have in my test listbox.
For i = 0 To Me.lstbxEmailListR.Items.Count - 1
Looking for a line of code that I can use to set a string to the listbox text
next
I don't need to use a listbox, But I figured it was easy to use to grab the email addresses from my DB.
a dialogue box to have the user open a file they wish. I'm trying to open a specific file when a listbox item is selected and I have that down but I'm running into the problem of needing to have "" in the display which is impossible from what I can tell in the code. I just need to know what goes in the quotes which will open the file. Also lets say the text file was 'supportdoc1.rtf' and was located in a folder inside of the program folder called 'SupportDocuments' would the path be "SupportDocumentssupportdoc1.rtf" [Code]
View 10 RepliesCan I let my program select an item in a listbox based on a string (f.e. textbox.text)?So basicly, if an item in my listbox containst a certain string (text from a textbox), it should select that item..
I've been searching for a while, but nothing is doing the job.. Could anyone give me an example of this?
I'm creating an editable ListBox control, where the user can double-click an item to edit it. When double-clicked, I simply overlay a TextBox over the item, so the user can change the text and then commit it by pressing Enter or leaving the TextBox. The 'commit' is simply this:[code]where 'editingIndex' is the index of the item being edited, and 'textBox' is the TextBox object.If the ListBox contains strings, this works just fine. The item being edited is replaced by the textbox Text string.However, if the ListBox contains some other object (let's say a custom class), this is a problem! It still "works", in that it still sets the text of the item, but the item is no longer an instance of that custom class! It is now a String, and all other information about the item is lost. So, I really want to let the user be able to change the text representation of ANY object, without replacing the object with a string. Obviously, I cannot know how the object displays its text (well, by the ToString function of course, but I cannot know what the ToString function returns).Now, I am having a few ideas how to approach this, but none really work the way I want. I am pretty sure that I'm going to have to provide some kind of event that the user has to handle. I'm thinking something like this:
- When the item edit is committed, an event is raised
- This event contains the Item being edited (as an object, the user has to cast it himself), and the new text of the item.-
- The user handles this event, and assigns the new text to the correct property.
For the Person class, this could look something like this.My ListBox should raise this event, and assign the new item like this.[code]I think this should work (although I haven't tested it), but there's one problem with this approach:When the items are just strings, the user still needs to implement this event handler, while he shouldn't have to (I can simply assign the new text string to the item). So, if the user is simply using strings, he still needs to do this for every instance of my listbox:[code]So what I'm really looking for is a way so that I can implement the default behavior (for String items), and still allow the user to override this behavior if he is not using strings.I may be overlookihe obvious solution here, but I can't figure it out... Overriding is done when you inherit a class, but the user isn't going to inherit my custom listbox (well he CAN, but he shouldn't have to). He is just going to handle the event. And if he doesn't handle the event, my listbox uses the default implementation.
When I select more items in listbox then show items in textbox as like "item1 item2" but I need how can I show items in textbox separately such as "item1" "item2".
View 4 RepliesIn my application I have a listbox and SelectionMode should be MultiSimple because users need to see which items they selected. In another tab we have another listbox this one should show all the selection users had done in first tab. Private Sub
[Code]....
I've been pondering upon my idea on how to create/update a text file using each item in a listbox as lines, but I fail each time. I've searched this forum as well as my friend, Google. Still nothing.
View 3 RepliesHow to display text in a rich text box when an item is selected in a listbox. Here's a snippet of my
Private Sub radGunsNRoses_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles radGunsNRoses.Click
'Declares songs into variables
Dim strSong1 As String = "1. Sweet Child O' Mine"
Dim strSong2 As String = "2. Novemeber Rain"
Dim strSong3 As Integer = "3. Welcome to the Jungle"
'Band Picture
[Code] .....
What I really want is that when radGunsNRoses is checked, the listbox displays the songs and when one is clicked, it shows the song's lyrics in the ritfSongs. Same thing goes for radACDC but the songs are different and the lyrics.
Exactly what I was looking for :thumb:
View 5 RepliesCan I let my program select an item in a listbox based on a string (f.e. textbox.text)?
So basicly, if an item in my listbox containst a certain string (text from a textbox), it should select that item..
Function runs fine on the listbox until i use the btnUp_Lanemgr click event
throws an exception in function (below in bold) "Unable to cast object of type system.string to type namespace.myitem"
what i can do to make this work?
'Button moves selected listbox item up
Private Sub btnUp_Lanemgr_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUp_Lanemgr.Click
[Code]....
How would one remove an item from a ListBox and then remove that line from the TextFile and repopulate the ListBox with new data in Visual Basic.Net?[cod]...
View 2 Replieshave this code that gets the first item from the listbox
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = ListBox1.Items(0).ToString
[code].....
At first i was gonna use a foldertree with checkbox's but ive decided thats a bit beyond my skill level so ive decided to go with a listbox.now i have a listbox and ive added some lines to it, basically just C: and D: now i wanna use them lines in the listbox in the following command.vb My.Computer.FileSystem.CopyDirectory("C:SourceDirectory", "D:DestinationDirectory") so i wanna run that command for each item in the listbox and use the text in the listbox as the source, and eventually ill try add a
View 3 Repliesi have this code [code]i want it to return me only 1 value which is the exact text as textbox1.text.
View 1 Repliesi have this code
vb
For Each sWord As String In listbox1.Items
If textbox1.text.Contains(sWord) Then
but the problem is if the textbox1.text value is ( new text ) and the list box have like 3 items
new
new text
text
it will return me 3 values i want it to return me only 1 value which is the exact text as textbox1.text ( new text )
Is there a way to see if an item is selected in a listbox?
View 13 RepliesI've been trying to add to a listbox item from a different thread (thread 2) than the thread in which the form/listbox was created (thread 1).
When I check ListBoxItem.InvokeRequired from within thread 2 it is always false when ApartmentState.STA is set. When set to MTA I get an error. Thread 2 is a unique thread with different ID from thread 1.
What is frustrating is that at one point it was working fine, and then I changed some of the structure of the project and it has now stopped working (and I don't know which change caused this! It was a while ago).
This code is within a form class:
Option Strict Off
Option Explicit On
Imports System.Threading
Friend Class MainWinForm
[Code]....
I need help Auto-selecting the first item in my listbox (listbox1). Doesn't sound too difficult but seem to be having a hard time with it.
View 5 RepliesA webbrowser site has a list box with countrys, id like to select say "China" from it with a button click
Image from website:
[Code]...
i have a list box which is populated with the sub folders from a user selected folder, so the listbox item count varies from 2 item to 1000 items etc.The list box code i use to do this is:
Dim lb1s As String = Form1.Folder.SelectedPath
Dim di As New IO.DirectoryInfo(lb1s)
Dim mydirInfoArray As IO.DirectoryInfo() = di.GetDirectories
Im trying to make a feature were on a button click the app will create 1 folder for every item on the listbox (named after the list box item)So if theres 3 items on the list box for example:
001
002
band 3
[code]....
And when the user presses the button, the app will create 3 dupe folders (Only the folders, not the contents) in a user selected directory using the same names, ive been tinkering for a little while but cant seem to figure out a way to implement this.
this is going to be hard to explain but ill try. Question 1. Ok i have a list box with a few items, What i want for this example is to click a button and it will start on the first item and do: MsgBox ("this is item blah blah blah") then after that it will go to the next item and do the same and then the next and so on untill all have been done. The "blah blah" should be the item so if item was to say "hello" then the msgbox would say "this item is hello" I know this would be a lot of msgboxes to close, like if 50 items then thats 50 msgboxes to close, this is just for the example.
Question 2. Ok this is where ive tryed to learn but find it really hard (multithreading) Im wanting all to be multithreaded so all work at the same time, ive tryed a few times but the only way i see it is having a **** load of subs, like if i want it to use 10 threads then ill have to add the same code 10 times or somet, im not sure.
i have attempted all this and failed big time as my way was to get the first item and use that then remove it from the listbox BUT... with it being quite fast the 2nd 1 and 3rd 1 used the same item befor it was removed and to be honest i dont really want them removed. so my attempts took like 2-3 days that was a waste of time really. I Know this is a lot to ask but im in real need of it and these 2 things have driven me half mad.
